Error saving data from dataset with expression column

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  - 1
    - Loss of datetime precision when attaching parameters to an ADO.NET command Hi, I am encountering some strange losses of datetime precision when calling a stored procedure through ADO.NET. I'm using ExecuteNonQuery in the Microsoft Data Access Application Block for .NET, which simply creates an ADO.NET command, and attaches each of the parameters, before calling cmd.ExecuteNonQuery(). I have a stored procedure that does nothing but take a whole load of input parameters and insert them into a table. Calling the SP directly from Query Analyser works fine. However, calling the SP from code as follows: ... parameters[5] = new SqlParameter("@Time", SqlDbType.DateTime); parameters[5].Value = time; ... SqlHelper.ExecuteNonQuery(sqlConnectionString, CommandType.StoredProcedure, "MyStoredProc", parameters); ...results in the time entry made into the database always having a zero value for the seconds. Similarly, if I execute: SqlHelper.ExecuteNonQuery(sqlConnectionString, CommandType.Text, "EXEC MyStoredProc ..., @Time, ...", parameters); ...the same thing happens. However, if I dump the INSERT statement that's in the stored procedure into a string called sql in the code, and then execute: SqlHelper.ExecuteNonQuery(sqlConnectionString, CommandType.Text, sql, parameters); ...then everything works just fine and I don't get the rounding error. Does anyone have any ideas as to why this may be? Many thanks in advance for your help, Chris. Tag: Error saving data from dataset with expression column Tag: 112900
  - 2
    - Dataset ambiguous error I am getting an error from defining my Dataset. The error is: BC30561: 'DataSet' is ambiguous, imported from the namespaces or types 'System.Data, DreamweaverCtrls'. I am using Dreamweaver, but am doing all the database functions by hand. My function is: Sub CheckStoredLetters() Dim myDbObject as new DbObject() Dim parameters As SqlParameter () = { _ New SqlParameter("@Email",SqlDbType.VarChar,45) } parameters(0).value = session("Email") Dim dbDataSet as DataSet = myDbObject.RunProcedure("GetCoverLetters", parameters,"CoverLetters") DataList1.DataSource=dbDataSet DataList1.Member="Letters" DataList1.databind() End Sub The error is on this line: Dim dbDataSet as DataSet = myDbObject.RunProcedure("GetCoverLetters", parameters,"CoverLetters") I also got the error if I tried: Dim dbDataSet as DataSet What would cause this error? Thanks, Tom Tag: Error saving data from dataset with expression column Tag: 112888
  - 3
    - DataReader error I have a dataReader that I am trying to use with datalist that works fine with my dropdown but gives me an error when binding with the datalist. The error is: Invalid attempt to FieldCount when reader is closed The code is: ********************************************************** Dim myDbObject as new DbObject() Dim DBReader As SqlDataReader Dim parameters As SqlParameter () = { _ New SqlParameter("@Email",SqlDbType.VarChar,45) } parameters(0).value = session("Email") dbReader = myDbObject.RunProcedure("GetLetters", parameters) DataList1.DataSource=dbReader DataList1.databind() ************************************************************* The myDbObject.RunProcedure is my object that fills a datareader from the Stored Procedure "GetLetters". The dropdown list worked fine when I had: StoredLetters.DataSource=dbReader StoredLetters.DataValueField="LetterID" StoredLetters.DataTextField= "LetterTitle" StoredLetters.databind() I just changed the datasource area and assumed this would work, but it doesn't. The datalist is: <asp:DataList ID="DataList1" RepeatColumns="4" RepeatDirection="Horizontal" runat="server" > <ItemTemplate><%# Container.DataItem("LetterTitle") %> </ItemTemplate> </asp:DataList> Very simple - I would have thought. What would cause that problem? It is virtually identical code, except for the dropdownlist vs the Datalist. Thanks, Tom Tag: Error saving data from dataset with expression column Tag: 112886
  - 4
    - DA Update Error I realize this is a broad ADO .Net question but i thought I'd give it a shot because i can't solve it When my DG opens and I select a row for deletion everything works fine. If I add a row through a separate Add Form class that returns a merged DS and try to delete the row I just added from the DG the DA.update(DS) gives an exception ("deletecommand affected 0 records"). The Row State of the row is "Delete" and the DS haschanges(). i think the total row counts of the DS and DG are correct Any Ideas? I'm possessed by it. Steve Tag: Error saving data from dataset with expression column Tag: 112883
  - 5
    - REQ: Practice code/files for Microsoft ADO.Net Step By Step - Please Hi all, Can someone please email me the code for this book .. Microsoft ADO.Net Step By Step 2002 rob012669@inbox.com Thanks in advanced Tag: Error saving data from dataset with expression column Tag: 112882
  - 6
    - FYI - Alternative DB engine for .net I found a alternative DB engine for .net suited stand alone apps that may not wish to use Jet or MSDE. I have not used it so can not comments on stability. Comes with source code and a license to allow use in commercial products. http://www.gotdotnet.com/workspaces/workspace.aspx?id=ea06f702-480a-4b60-8402-70b27c6472dd Tag: Error saving data from dataset with expression column Tag: 112872
  - 7
    - Help - MSDE or Jet for Stand-alone App, I am converting a older VB app to .net. The app currently strores info. Into a JET database. As this is an end user app, I can not convert to SQL server, etc. so I need to use either the older Jet engine or using MSDE. Questions: Issues with loading MSDE on a neophyte user's machine. Will it require user tweaking and will it effect their system performance? Also, will they need to install as ADMIN? Also, if multiple people need access to the same database, will MSDE need to be installed on all of the machines and can it access the same database file on a network drive? Or will one machine need to be designated as the DB server? Eg. Time for SQL server? If one is running SQL server 2000, can the databases be used by MSDE? If not, where can find info on what changes need to be done? What is the current stability state of the Jet engine. I know that the pre-4 versions had data corruption issues. Did version 4.x fix most of these issues? Thanks P.S. Any recommendations for a good tutorial on installing MSDE on the target machine and replicating the database files would be helpful. Tag: Error saving data from dataset with expression column Tag: 112865
  - 8
    - SQL Server SPIDs Hello, I don't know much about SQL Server processes/SPIDs but everytime our web app creates a ADO.NET connection and closes it, the SPID is still hanging around in "sleeping status" well after it's closed in the ADO.NET code. Is this normal or I am making database calls inefficiently? I also thought mutiple connection w/ the exact same connection string becomes pooled. If pooled, will that not affect the number of SQL SPIDs created. Should I be concerned about the number of SPIDs the app is producing or is this normal? Thanks in advance, Jim Tag: Error saving data from dataset with expression column Tag: 112854
  - 9
    - Database query performance I have a database table. The table has number of fields. Out of those fields one is Company and another is DateTime. The table has thousands of records. I want to get the most recent record for each company. In order to do that I am using the following query SELECT * from CompanyDetail AS X WHERE [DateTime]=(SELECT max([DateTime]) FROM CompanyDetail WHERE Company=X.Company) ORDER BY Company Note: There is only one record exists for the given company on a given date The problem is that this query is very slow. Am I doing something wrong or there could be another alternative way to improve it ? Thanks in advance KDV Tag: Error saving data from dataset with expression column Tag: 112850
  - 10
    - ERROR [42724] - .NET to DB2 via Managed Provider The complete error is at the end of this cry for help. I've been tasked with hooking an interface in ASP.NET and a handheld (via web services) to an existing DB2 data store. The requirement for real-time data submission is driving the development, and all is going well, In fact, the managed provider is working perfectly to execute stored procedures to read from the data store, both ones that have no parameters (simple lookup lists), lookup lists that are pre-filtered with parameters, and ones that use identity columns to pull editable records. Performance is fine, and everything on the interface side is great. BUT (always is one), I get the same basic error (see below) every time I execute a stored procedure that inserts or updates a record. These same procedures all work perfectly from inside the command editor, and the logon to the data store there is the same as the one in the .NET development environment (to eliminate permissions issues). Yet, the error is pulled every time, and being somewhat of a newcomer to the DB2 world, I expect it is probably looking me right in the face. The code accessing the stored procedure is almost identical to the read code, rendered in VB.NET, and patterned after examples on the IBM sample set. Absolutely any insight, even where to look to resolve this, would be highly appreciated. Thanks. Frank Buchan ***ERROR DETAILS BELOW*** ERROR [42724] [IBM][DB2/NT] SQL0444N Routine "*ERT_DEST" (specific name "SQL050622125403880") is implemented with code in library or path "...2.V1_INSERT_DEST", function "MDM2.V1_INSERT_DEST" which cannot be accessed. Reason code: "4". SQLSTATE=42724 Tag: Error saving data from dataset with expression column Tag: 112849
  - 11
    - Huge data needs to be transfer from Fixed width Text File to SQL S Hi Experts, I have huge fixed width text files around 9GB or 60 TO 75 millions records. I need to transfer 300GB data from these Text files to SQL Server 2000 monthly bases. I am trying to develop VB.NET application. One problem is I need to transform this data, like date is 6 char (mmddyy) which needs to be convert into real Date (mm/dd/ccyy) during the import. I tried to use datareader to bring data into DataTable and then append data into SQL Server using SQLBulkInsert but its taking long time and start failing after 10-16 millions records appended into SQL Server 2000 table. I have following questions:- 1- Which class-method should I use to read the data from text file? 2- How to perform Transformation data ( like converting 6 char date fields into DATE and other validations)? 3- Which Class-method should I use to append data into SQL Server 2000 to get the best performance? 4- Is there any better way to done the same job? I am using VB.NET 2005 Beta. Thank you so much for your time and help. Some code what I am using right now to do so Using rdrDataFile As New TextFieldParser(mstrDataFilePath) rdrDataFile.TextFieldType = FileIO.FieldType.FixedWidth rdrDataFile.SetFieldWidths(objDataFile.SplitPositions) arrNumToExclude.AddRange(objDataFile.ColumnIndicesToExclude) tblDataFile = objDataFile.StagingTable Dim currentRow As String() Dim rowIndex As Integer = 0 destConn = New SqlConnection(strConnectionString) 'Creates Connection destConn.Open() 'Opens Connection ' intTotalRowCount = 1 While Not rdrDataFile.EndOfData Try Dim myRow As DataRow = tblDataFile.NewRow currentRow = rdrDataFile.ReadFields() Dim currentField As String Dim columnIndex As Integer = 0 Dim intCounter As Integer = 0 For Each currentField In currentRow If Not arrNumToExclude.Contains(intCounter) Then myRow(columnIndex) = objDataFile.FormatData(columnIndex, currentField) columnIndex += 1 End If intCounter += 1 Next tblDataFile.Rows.Add(myRow) Catch ex As Exception End Try rowIndex += 1 If rowIndex = 100000 Or rdrDataFile.EndOfData Then 'Upload data To Database in Batches BulkCopyToDB(tblDataFile, objDataFile.DestinationTable) 'Copy Data into DB tblDataFile.Clear() rowIndex = 0 End If 'vpbDataFile.Value = IIf(intTotalRowCount < vpbDataFile.Maximum, intTotalRowCount, vpbDataFile.Value) 'intTotalRowCount += 1 End While End Using Public Sub BulkCopyToDB(ByVal vtblDataFile As DataTable, ByVal vstrDestTable As String) Dim bcp As SqlBulkCopy = Nothing Dim strConnectionString As String = "" Try bcp = New SqlBulkCopy(destConn) bcp.DestinationTableName = vstrDestTable bcp.WriteToServer(vtblDataFile) Catch ex As Exception Finally If Not bcp Is Nothing Then bcp.Close() End If End Try End Sub Regards, -Permood Tag: Error saving data from dataset with expression column Tag: 112847
  - 12
    - retrieve id when adding a new record in SQL Hello, Iâ??m adding a record to a SQL database. One of the columns in the database generates a uniquely identifying integer when a record is added. I would like to retrieve this number when I add a new record to the table. By the way I do not want to use stored procedures. Iâ??m using the following VB.NET code to add a record to a database how would I change this so that at the same time I can retrieve the unique record id generated by the database in the table? Imports System.Data.SqlClient Dim conDB As SqlConnection Dim strInsert As String Dim cmdInsert As SqlCommand conDB = New SqlConnection("connection string") strInsert="Insert Products (ProdName,ProdCat) Values ('Flat Chair',â??Chairâ??)" cmdInsert = New SqlCommand(strInsert, conDB) conDB.Open() cmdInsert.ExecuteNonQuery() conDB.Close() Thank you. Tag: Error saving data from dataset with expression column Tag: 112845
  - 13
    - Pivoting DataSet I currently have from SQL a stored procedure that is vaguely doing something like: SELECT FormName, frmDueDate, DepartmentName, Country frmStatus FROM wholeBunchOfTables So data will be returned like: Form1 ITDept USA Incomplete Form2 ITDept UK Completed Form1 HRDept FR Completed Form2 HRDept FR Missing The DataSet resultant from the Stored procedure execution is binded to a sortable DataGrid. However, I would like the data "pivoted": i.e. Form1 Form2 ITDept USA Incomplete Completed HRDept FR Completed Missing Is this at all possible (natively)?? - Can't think of any pivoting SQL operators?? - Can't pivot on ASP.NET/ADO.NET?? Would I have to resort to --- creating another DataSet with columns pivoted?? or --- render my own table, etc. and handle by own sorting? Tag: Error saving data from dataset with expression column Tag: 112844
  - 14
    - Bug in framework? I'm having a very funny behaviour in my application. My windows App running on XP sp2, has data from various table. If I make changes to only 1 table on the form and click save, it gives an error: "Object reference not set to an instance of an object." If I debug the code, it crashes on the line with "*" (I'm showing the code above, so that it would give a better idea) public void UpdateDataSet() { // Create a new dataset to hold the changes that have been made to the main dataset. ClientManagementPro.dsClientT objDataSetChanges = new ClientManagementPro.dsClientT(); // Stop any current edits. this.BindingContext[dvClient,"relClient-ClientAddress"].EndCurrentEdit(); this.BindingContext[dvClient,"relClient-ClientNote"].EndCurrentEdit(); this.BindingContext[dvClient,"relClient-Action"].EndCurrentEdit(); this.BindingContext[dvClient,"relClient-Child"].EndCurrentEdit(); this.BindingContext[dvClient,"relClient-Job"].EndCurrentEdit(); this.BindingContext[dvClient].EndCurrentEdit(); * <------------------- It crashes here (mind u dvClient is the only thing that is modified). Now, after it gives that error, if I click save, it goes through just fine! Again this only happens sometimes, if I edit the same fields on the same tab, it works just fine. I'm completely lost here and have no clue how to troubleshoot this, any insights would be highly appreciated. Thanks HS Tag: Error saving data from dataset with expression column Tag: 112840
  - 15
    - Write a XML file without accents Hello, I have a problem and I think that someone can help me. I am writing a XML file using data from a Oracle data base. I am from Brazil, and here we have accents on the words, like "acentuaÃ§Ã£o".I need write my XML file without the accents. Today I am using one DataSet to write my XML, specifically the method WriteXml. How can I resolve my problem, using a feature from the .NET Framework? Thank's -- Tiago Machado Microsoft Certified Professional C# .NET Tag: Error saving data from dataset with expression column Tag: 112839
  - 16
    - DataGrid control scrolling Can I programmatically control the scrolling of DataGrid control in Windows Forms. I have DataGrid control which shows hundred of rows. I want a way of scrolling the data grid to last row KDV Tag: Error saving data from dataset with expression column Tag: 112837
  - 17
    - wizard-generated stored procedure for Null-Guid-Column Hi, - occurs with .Net 2.0 Beta 2 - I have a typed-DataSet and some DataAdapters to provide the tables for the DataSet. When I create the stored-procedures with the DataAdaper-Wizard for a table with a Guid column, which can be NULL, the Wizard generates a wrong Script. (only when "use optimistic concurrency" is true). If you look at the script, the following part of the where-clause is faulty ...((@IsNull_FieldName = 1 AND [FieldName] IS NULL) OR ([FieldName] = @Original_FieldName))... (FieldName is defined as uniqueidentity, allow NULL) obviously @IsNull_FieldName = 1 is wrong, because 1 is an Integer and not a uniqueidentity. But how to fix that? regards Gunnar Tag: Error saving data from dataset with expression column Tag: 112834
  - 18
    - Poor DAB performance I recently came across the Microsoft Data Access Application Block so I decided to try it out in a Windows forms application. Without using the DAAB, the following code, which creates a data reader which is then used to populate a combo box, takes 3 seconds to run: SqlConnection cn = new SqlConnection("server=.......") commandString = "select ......" SqlCommand cmd = new SqlCommand(commandString, cn); SqlDataReader dr = cmd.ExecuteReader(); The command string is a simple select statement on one table which returns the primary key for about 10 records. After installing the DAAB I modified the code as follows: Database db = DatabaseFactory.CreateDatabase(); commandString = "select ......" DBCommandWrapper dbCommandWrapper(commandString); IDataReader DataReader = db.ExecuteReader(dbCommandWrapper); This code takes 6 seconds to run, twice as long. I can see the advantages of using the DAAB, but this performance overhead is too great. Is this to be expected when using the DAAB or am I missing something? Tag: Error saving data from dataset with expression column Tag: 112827
  - 19
    - Exception on SqlTransaction.Rollback(), BUT it doesn't Hi, My program injects message at the same time as SQLServer is backing up (full). I write injecting module using Try...Catch block with SqlTransaction and using SP. Within Exception block I call Rollback() (it cautch timeout exception). I've found that it got exception on Rollback() command with InvalidOperationException (message="This SqlTransaction has completed; it is no longer usable."). In this situation, sometime the message is right (inject success), but sometime it doesn't. How can I resolve this problem? Thanks in advance, Thana N. Tag: Error saving data from dataset with expression column Tag: 112819
  - 20
    - SQL CLR: which assembly to reference for microsoft.sqlserver.serv I am trying to use objects (such as sqlcontext) defined in the microsoft.sqlserver.server name space, but couldn't find the right assembly to reference. Does anyone know which assembly implements the classes defined in this name space? Tag: Error saving data from dataset with expression column Tag: 112816
  - 21
    - Trying to find ClientID of web form - Solution Found After pouring over about a dozen sites that clearly dealt with ClientID all by itself, I came to the realization that about 2/3+ of them were doing it wrong. It is indeed impossible to grab the Client ID of a form field from within a DataGrid like this: <%= FormFieldID.ClientID %>. At least, not without extra work. How did I do this? I created a new DataGrid from scratch, with a form above it and a form inside of it. This was a page about 50 lines long - so, very short - with no user dependencies except for the initial loading of the DG with content from the DB. While I was able to get the ClientID of the form that was outside of the DG, I was unable to do so for any form fields inside of the DG using <%= FormFieldID.ClientID %>. Doing so threw the error. That got me to thinking. Which, after nearly two days of rest from the subject, was a wee bit clearer than before Sunday. I decided to call the form field directly. I first Dim'd a name as a textbox, and then I called the right textbox by catching it when the DG was being created. Since it was in the footer (the footer is an "add" row) simply calling like this: Dim add_Date as TextBox = e.Item.Cells(1).FindControl("add_Date") was a bit difficult. Which row would be referenced? How would the script know to look in the footer? Since the footer comes and goes (I don't need it during an edit), looking for it would have to be conditional. In order to catch the right row (the footer) while the DG is being built, I added a feature to the DataGrid itself (onItemDataBound = "dg_ItemDataBound") which calls the sub dg_ItemDataBound when the DataGrid is being built. From here, I created a Sub (Sub dg_itemDataBound()) in which I contained my attempt to find the ClientID of the form field within the footer: If e.Item.ItemType = ListItemType.Footer And dg.ShowFooter = True then Dim add_Date as TextBox = e.Item.Cells(1).FindControl("add_Date") End If From here it was pretty easy to set up a RegisterStartupScript (inside the IF) that made use of add_Date.ClientID. Since I had already defined add_Date as the form field called "add_Date" in the second cell of the footer row, the usage of add_Date.ClientID no longer threw an error. I also had to implement this within the dg_Edit() Sub, in a slightly different fashion, but that's because I allow rows to be edited. *** What is really strange is the sheer number of sites that claim that using <%= FormFieldID.ClientID %> will actually work inside of a DataGrid without further modification or code. It certainly didn't work for me. I would also like to apologize to the community at large for my hissy fit on the weekend. It had been a very long week, this was just one of many problems I was still trying to solve, and Juan's reply seemed to be mocking me for my lack of progress. Normally I'm much more mild mannered, but something in me must have snapped from all the stress. That should not have happened. Gomen dasai. TIA ...Geshel -- ********************************************************************** My reply-to is an automatically monitored spam honeypot. Do not use it unless you want to be blacklisted by SpamCop. Please reply to my first name at my last name dot org. ********************************************************************** Tag: Error saving data from dataset with expression column Tag: 112801
  - 22
    - minumn and maximum what is the mininum and maximum value in SQL statement select * from table1 where field1 between "minumum" and "maximum" then it will show up all the value in table1 thank regards Tag: Error saving data from dataset with expression column Tag: 112800
  - 23
    - Datasets and identities in ADO.NET 2.0 Hi to all, I'm developing a test application with Visual Studio 2005 Beta 2 and the 2.0 framework (along as SQL Server 2005 June CTP), and I'd like to know if they introduce some improvements in order to solve an old problem: how to deal with inserting values from a DataSet into two related tables when one of them has an auto-generated ID column. Let's say I have these two tables in the DB, Table1 and Table2, and Table1 has an "ID" column which is configured as an auto-generating identity; Table2 also has an ID column, which references Table1.ID in a foreign key relation. Now, I'm loading these two tables in a typed DataSet, which, being typed, knows the structure of the tables and the relation between them; I put a new row into Table1, and then another one in Table2 referencing the new Table1.ID. The question is: how do I put those new data into the DB, since I can't specify the value of the column in the master table? I know there are some workarounds for this problem (like retrieving the new auto-generated ID and storing it in the DataSet, or using stored procedures to update the tables, or using placeholder values in the DataSet before submitting the changes, or using GUIDS), but I'd like to know if ADO.NET 2.0 solves this problem in a more elegant way than 1.0 and 1.1 did; the new framework has so many improvements... this one would be quite helpful. Thanks for any answer. Massimo Tag: Error saving data from dataset with expression column Tag: 112794
  - 24
    - DataView.AddNew for child table Causes index out of bounds I've bound the data grid (windows forms) to two related tables, at the top Clients, and below the Jobs for that client. Most works well except if one deletes all jobs for a given client, and then goes to add a new one. The DataView.AddNew causes an index out of bounds exception. It would appear from the stack that the grid is attempting to paint row #0, which of course does not exist yet (not until I finish filling out the DataRowView, and call drv.EndEdit). I have tried suspending layout during the add, but no help. I unbound and attempted to rebind after the add, which avoids the exception, but once I rebind I am not able to see how to navigate back to the newly created row in the child table. I end up at the job for the first client. I don't see how to tell what row # to use to get to the newly added job. Banging my head on the wall until bloody. Googling until my fingers are raw. I see others reporting problems such as this, but no one seems to know the answer. Tag: Error saving data from dataset with expression column Tag: 112786
  - 25
    - DataTable.Select method bug in .Net Framework 1.1 SP1 Since Microsoft removed the original thread from this newsgroup... here it is again. Just to add some comments: we are MSDN Universal Subscribers and didn't get support from Microsoft. We are being ignored for almost 5 months. We have tested Microsoft .Net Framework 2.0 Beta 2 and the problem is still there. This is worst than a virus and Microsoft does nothing. By the way: did you know that Windows 2003 SP1 installs .Net Framework SP1? You can't find this information in any of Microsoft's documents about the SP1 of Windows 2003 but it does... Has anyone from Microsoft the decency to answer this post and to solve this problem? Here is one of the original posts (25/02/2005): There is a bug in .Net Framework 1.1 SP1 with the DataTable.Select method. Microsoft's description of the problem may be found here http://support.microsoft.com/default.aspx?scid=kb;en-us;891742 and you can ask for a fix to that issue. The problem is that the fix does not work properly! Some problems were solved with this fix but some persist. And the problem relates to the overload of DataTable.Select with a filter and a sort expression: in that case the result of the method returns rows that do not meet the filter conditions. We have a detailed description of this problem at : http://pwp.netcabo.pt/0434926301/ and have included a new test harness (source code included) to test the problems we are experiencing. As we can't tell for sure what gets solved and what doesn't with this fix we decided to continue limiting the support for our applications for clients not running the SP1 of the .Net Framework 1.1. The purpose of this thread is to notify microsoft for the problem so that an effective fix is released and to alert the developer community for this very harmful bug. The first thread I know of reporting this problem dates from 9/9/2004 and Microsoft still hasn't fixed the problem... Tag: Error saving data from dataset with expression column Tag: 112780
- Next
  - 1
    - TRANSFORM statements in ADO (Excel) I require a report (in Excel) using data stored in Excel whcih uses the PIVOT/TRANSFORM SQL function. I've attempted this in ADO as unfortunately the Pivot Table function in Excel doesn't appear to be able to support my complex calculation (Sum(AVE)/Sum(Amt)) My connection string etc works - But the SQL string is rejected error. Basically the query reads as follows: TRANSFORM (Sum([Ave])/Sum([Amt])) AS EXP1 SELECT [Deal Type], Subbranch, Ccy FROM [Group Data$] GROUP BY [Deal Type], Subbranch, Ccy PIVOT Sheet; I could build this in Access (as I know it works there) but I've started in Excel and I thought ADO could handle this. however I get an error message saying "Jet engine does not recognise the field name sheet" (abreviated version) Any help would be much appreciated. Kind Regards Rob Tag: Error saving data from dataset with expression column Tag: 112779
  - 2
    - Delete DataView rows from DataTable (should be simple) I'm using vb.net, but if you only have a c# answer, feel free to offer it!. Anyway, I have a DataTable and a DataView which is a subset I have ID'd to be deleted from that DataTable. I tried looping through the DataView and deleting rows like this: Dim dvAuto As New DataView dvAuto.Table = dtCart dvAuto.RowFilter = "AutoAdd = True" If dvAuto.Count > 0 Then Dim dr As DataRow For Each dr In dvAuto.Table.Rows dr.Delete() Next End If But obviously it didn't work. I suspected modifying a collection while looping through it would be a no-no and I was right (but tried anyway). Without being able to issues a SQL delete like: delete from dtCart where AutoAdd = True I'm just not sure how to do this. How is this typically done? Thanks! Matt Tag: Error saving data from dataset with expression column Tag: 112777
  - 3
    - Update Server through webservice problem I've been using the example posted at http://support.microsoft.com/default.aspx?scid=kb;en-us;310143 to build a disconnected dataset that updates SQL Server through a webservice. However, the code above doesn't seem to work for inserts or deletions. Because my tables have autoincrementing primary keys (in the database and the dataset) I've used the recommendation for the dataset to set the autoinc seed to 0, and the step to -1. The means that my client dataset has primary keys like -1, -2, etc. for new records. When I update the server, the server-side dataset gets it's ID's updated by the insert stored procedure. When I merge back this server side data set with the client one, new rows appear twice in the client-side dataset. Likewise, when I delete records from the local dataset, the changes get sent to the server side dataset. The server code deletes the appropriate records from the database, and those rows are removed from the server-side dataset by DataAdapter.Update(). When I merge back this server side dataset back to the client dataset, the 'deleted' rows remain in the client dataset. Everything in the database is correct, but the client side dataset is completely out of sync with what is in the database. The only solution I can think of is on the client side to confirm that all updates went ok. If they did, then I'll RejectChanges on any new rows in the client dataset, and AcceptChanges() on any deleted rows in the client dataset. Then, I'd merge back the server side dataset to get any updates that were done. Is this the only way to do this? There must be an easier, built in way to handle this (aside from reloading the whole client dataset from the server). Thanks. Tag: Error saving data from dataset with expression column Tag: 112768
  - 4
    - ado.net unable to connect from Windows 2000 after SQL server Resta After restarting my SQl Server instance my ASP.net applicaions running on Windows 2000 are unable to connect to the SQL Server. My asp appplications are still able to connect The connection string I am using is user id=sa;pwd=????;data source=????;persist security info=False;initial catalog=DBNAme My clients running on Windows 2003 Server are still able to connect after the restart. I have tried the following: Restarted the 2000 Machine hosting the client with no resolution Changed the "data source" parameter to use the ip of the database server rather than the DNS name with no resolution. Added an entry in the ODBC Data Source Administrator for the server on the 2000 Machine with no resolution I am able to ping the Database server and access it from Query Analyser from the 2000 servers. I was wondering if anyone has come across a similiar problem or if anyone has any pointers as to what other changes to try?? Thanks, BArry Tag: Error saving data from dataset with expression column Tag: 112765
  - 5
    - Is this a good application Design? Hello, Currently my application has three tiers- 1. Presentation Layer (Asp.Net / Win Forms/ Pocket PC UI.) This predominantly contains User Controls, Custom Controls and Win/Web Forms. I have one base form and I inherit from that form. All validation is done in this tier. There is zero Data Access code in this tier. This tier exclusively gets DataViews/ Arays/Lists as input. Outputs are string objects with SQL Statements or just paremeters with dataconnection key. 2. Business Layer. Currently this is just a Library residing in the same machine as Presentation layer. Eventually I plan to use WebServices if application needs physical seperation. Most of Business Logic are implemented in this layer. There is absolutely no UI code here. These are all bunch of static methods which perform CRUD functionality. All methods are atomic in nature. I dont rely on Static Variables. There is just one DatabaseGateway class which does all the functionality. 3. Data Layer. (SQL Server) I dont use stored procedures. predominantly use Views. I have been reading up on Rockford Lhotka's business objects and I just feel that his framework is unnecessarily complex. I just dont see the need to hold these intermediate Business Objects. Thanks for your responses. -- Jay Balapa Director Of Software Engineering www.atginc.com Tag: Error saving data from dataset with expression column Tag: 112742
  - 6
    - Oracle and .NET stored procedures returning dataset... Hi, How can I return a DataSet from oracle stored procedure(that returns for example, the customers from Brasil) to my ASP.NET application In Sql server is easy.. and seens like this: ------------ into sql Procedure SP_cursos (@categoriaID Int) As Select ds_curso from curso where ID_Categoria = @categoriaID ------------------------ into my .net class Dim dsCursos As New DataSet Dim daCurso As New OleDbDataAdapter daCurso.SelectCommand = New OleDbCommand daCurso.SelectCommand.Connection = objConn daCurso.SelectCommand.CommandText = "SP_Cursos" daCurso.SelectCommand.CommandType = CommandType.StoredProcedure Dim objParam1 As New OleDbParameter("@categoriaID", SQLDBType.Int ) objParam1.Direction = ParameterDirection.Input daCurso.SelectCommand.Parameters.Add(objParam1) daCurso.Fill(dsCursos, "cursor") ddlMiniCursoOpcao1.DataSource = dsCursos ddlMiniCursoOpcao1.DataSource = dsCursos.Tables(0) ddlMiniCursoOpcao1.DataTextField = dsCursos.Tables(0).Columns("ds_curso").ColumnName.ToString() ddlMiniCursoOpcao1.DataValueField = dsCursos.Tables(0).Columns("cd_curso").ColumnName.ToString() ddlMiniCursoOpcao1.DataBind() Best Regards, Ricardo Magalhães Tag: Error saving data from dataset with expression column Tag: 112741
  - 7
    - Problem with varcharData Hi ! I have problem to extract data from a DB when there is a filed "Varchar" with more or equal to 1000chars ! I don't understand why ! I add parameters like: prmOleDb = New OleDbParameter() prmOleDb.Direction = oParam.Direction prmOleDb.ParameterName = oParam.Name prmOleDb.Value = oParam.Value prmOleDb.IsNullable = oParam.IsNullable prmOleDb.DbType = oParam.DBType If oParam.Size > 0 Then prmOleDb.Size = oParam.Size End If cmdOleDb.Parameters.Add(prmOleDb) Tag: Error saving data from dataset with expression column Tag: 112737
  - 8
    - Serialization problem with SqlError Deserializing SqlExceptions on Windows XP (SP2) originating from a Windows Server 2003 SP1 machine is problemetic. It may generate the following exception: Exception: System.Runtime.Serialization.SerializationException Message: Member name 'System.Data.SqlClient.SqlError server' not found. Source: System.Runtime.Serialization.Formatters.Soap at System.Runtime.Serialization.Formatters.Soap.ReadObjectInfo.Position(String name) at System.Runtime.Serialization.Formatters.Soap.ReadObjectInfo.GetType(String name) at System.Runtime.Serialization.Formatters.Soap.ObjectReader.ParseMember(ParseRecord pr) at System.Runtime.Serialization.Formatters.Soap.ObjectReader.Parse(ParseRecord pr) at System.Runtime.Serialization.Formatters.Soap.SoapHandler.EndElement(String prefix, String name, String urn) at System.Runtime.Serialization.Formatters.Soap.SoapParser.ParseXml() at System.Runtime.Serialization.Formatters.Soap.SoapParser.Run() at System.Runtime.Serialization.Formatters.Soap.ObjectReader.Deserialize(HeaderHandler handler, ISerParser serParser) at System.Runtime.Serialization.Formatters.Soap.SoapFormatter.Deserialize(Stream serializationStream, HeaderHandler handler) at System.Runtime.Serialization.Formatters.Soap.SoapFormatter.Deserialize(Stream serializationStream) I have found out that this is due to an incompatibility between the System.Data assemblies on both machines. The following assemblies are installed on both machines: * Client: Windows XP SP2, System.Data.dll (v1.1.4322.2032) * Server: Windows Server 2003 SP1, System.Data.dll (v1.1.4322.2300) A SqlException that is thrown on the Windows Server 2003 SP1 machine contains an error collection of type SqlError. Such an error will be serialized like this: <a3:SqlError id="ref-18" xmlns:a3="http://schemas.microsoft.com/clr/nsassem/System.Data.SqlClient/System.Data%2C%20Version%3D1.0.5000.0%2C%20Culture%3Dneutral%2C%20PublicKeyToken%3Db77a5c561934e089"> <source href="#ref-15"/> <number>50000</number> <state>1</state> <errorClass>16</errorClass> <server id="ref-19">PC1882</server> <message id="ref-20">-Message here-</message> <procedure id="ref-21">-Procedure here-</procedure> <lineNumber>24</lineNumber> </a3:SqlError> If the same exception is thrown on a Windows XP SP2 machine, then the <server> tag is missing. This may seem strange, because the Server property does exist in the v1.1.4322.2032 version. I started Lutz Roeder's .NET reflector and it shows that the Server property is some kind of stub that always returns an empty string. There isn't a server field in the class and it cannot be set by the class' constructor. This explains why it is not in the serialized message. If you load the Windows Server 2003 SP1 assembly into the .NET Reflector, then there is a server field and the server can be set in the constructor. When the SqlError is constructed, then the server is saved into the field and returned when the Server property is requested. This explains why it is in the serialized message. It is good to have the server property in there, but it is annoying that it isn't compatible anymore. The Windows Server 2003 SP1 machine serializes the SqlError and includes the server tag. The client deserializes the message and encounters the server tag and doesn't know what to do with it and generates the exception listed above. Although I can explain what is happening, I cannot solve it (yet). I am currently working on a solution for this problem, but for now I can only explain what is happening. For anyone else out there that is facing the same problem it might be nice to know what is actually happening. It worries me, that although the version numbers are the same (only a difference in buildnumber) causes these kind of problems. I thought the versioning issues would have been resolved with .NET. I hope someone can bring up a solution. I really don't like to implement my own SerializationBinder to solve this issue (that is what I am thinking of right now). Can someone please respond to this issue? -- Greetings, Ramon de Klein (Ramon.de.Klein@ict.nl) Tag: Error saving data from dataset with expression column Tag: 112727
  - 9
    - view vs sproc i have a query containing inner joins....i use it to populate my truegrid. which better way of executing my query? make a view of it or make a stored procedure of it? im using a dataset and dataadapter to populate a datatable to be bind as the datasource of my truegrid. can you suggest a better(optimize) way of doin it? -- rad Tag: Error saving data from dataset with expression column Tag: 112726
  - 10
    - sql group problem Hi All Using VB.net 2003 and ADO.Net with MS Access 2003 database I want to retrieve records grouped by time, but grouped within 1/2 hour increments The program is for a gym membership and I display graphs of the number of sign-ins by members over the day The gym uses this info to roster their staff according to the busiest times of the day The sql statement below returns the data but based on actual entry times. sql = "Select mytime, count(mynumber) as amount from [attendance] where [mydate] = #" & Format(CDate(Freports.dg2(Freports.dg2.CurrentRowIndex, 0)), "MMM d, yyyy") & "# group by [mytime]" I would like to reduce this by grouping attendance into 1/2hr groups, so the graph is not so cluttered e.g entries of 5pm, 5:03pm, 5:10pm, 5:15pm would be grouped as say 5pm Any ideas Regards Steve Tag: Error saving data from dataset with expression column Tag: 112721
  - 11
    - CancelCurrentEdit doesn't Hi Using Windows.Forms in ADO.NET in VB.NET 2003. I have 3 dataviews of the same datatable in a dataset, each a subset of the datatable by means of rowfilter. for example: Me.dv1 = New DataView(myDataTable) Me.cm1 = Me.BindingContext(Me.dv1) Me.dv1.RowFilter = "Actions LIKE '%(1)%' AND Condition = 1" Me.dv2 = New DataView(myDataTable) Me.cm2 = Me.BindingContext(Me.dv2) Me.dv2.RowFilter = "Actions LIKE '%(3)%' AND Condition = 1" Each dataview is bound to it's own datagrid. Editing data within the datagrids updates the current version of the row and not the proposed version, and hence the CancelCurrentEdit on the CurrencyManagers does not work. Any help would be much appreciated. -- Many Thanks Terry Tag: Error saving data from dataset with expression column Tag: 112718
  - 12
    - OleDb: Get Properties Hi, how can I get properties in ADO.Net? I read about it in the OleDB documentation (Chapter 14: properties) but I can not find out how to get them in .Net using an OleDBConnection. Any ideas? I searched "everywhere" but without success. Currently, I'm trying to get the information from the DBPROPSET_JETOLEDB_COLUMN property set: http://msdn.microsoft.com/library/en-us/oledb/htm/oledbprovjet_provider_specific_properties_in_dbpropset_jetoledb_column.asp Also with other providers, I have no clue how to get properties. I have the GetOleDbSchemaTable method. I can use it only to get schema information (which is no problem) but not those properties. Armin Tag: Error saving data from dataset with expression column Tag: 112717
  - 13
    - Cloning Datasets but also filtering Hi, I have 2 Datasets with 20 tables. Ones called Surveys and the other SingleSurveys. Surveys contains ALL survey data (IE SurveyID = 1,2,3,4,5......). All tables have related ID field (IE SurveyID on each table) I need to copy over to SingleSurveys only one survey data (IE SurveyID = 12) The SingleSurvey should contain all the same tables, but filtered fields by the SurveyID. Is there a fast way to do this? Dataviews? I have investigated some components but the seem to put all the data in 1 table. I need the same structure just data pertaining to a certain surveyID? Thanks Daren Tag: Error saving data from dataset with expression column Tag: 112705
  - 14
    - dataset merge with itself I am trying to create a dataset with multiple records that hold identical data by merging a dataset with itself. I don't think this will work and I am looking for other solutions. For example, a dataset has a parent table called CATEGORY and a child table called ITEMS. There is a primary key column and the value is -1 for the parent (and child refers to row -1). Now I want a dataset that has 3 records with this same information. I want row -1, -2, and -3 all with the same values. I don't think Merge is what I am looking for because when the dataset tries to merge with itself, the primary key of -1 is the same and instead of adding a new row with primary key -2 it merges (imagine that) which results in still only one row. Does anyone have a better solution to this? Otherwise I need to manually create all the tables and rows by looping through the original dataset. Thanks. Tag: Error saving data from dataset with expression column Tag: 112703
  - 15
    - Operator '=' on System.DateTime and System.Double I'm developeing a small app based on the Visual Studio Beta 2 and the DataGridView. I'm trying to add a new row to a datatable programmatically and I keep getting a strange error about not being able to use the '=' operator between a System.DateTime and System.Double. I do not have a double anywhere in my datatable and I've checked multiple times to make sure that I'm passing the right value to the addnew method. Is this a MS bug? Tag: Error saving data from dataset with expression column Tag: 112701
  - 16
    - from mm/dd/yyyy to yyyy/mm/dd The date in my application is in mm/dd/yyyy format which i use in query to access data from a mini system on network having data in yyyy/mm/dd format.How can i change my date into yyyy/mm/dd format in query to get the result.Or tell me any other solution other than changing the Date Format of my machine. Thanks in advance. *** Sent via Developersdex http://www.developersdex.com *** Tag: Error saving data from dataset with expression column Tag: 112685
  - 17
    - sqltransaction im updating a header and detail table with an update constraint. sqlcmd1 is used to update header, sqlcmd2 is for detail. both cmd runs in one sqltransaction. my problem is my second sqlcmd catches a constraint error when updating the detail table. is it because my record in the header table is not yet commited and my foreignkey in the detail table requires that the primarykey already exists in the header table? is there a way to implement sqltransaction in header,detail table with update constraint? how? -- rad Tag: Error saving data from dataset with expression column Tag: 112673
  - 18
    - Question regarding DataRowView.RowFilter Hi There I am having trouble with the DataRowView.RowFilter I am giving subscribers to an asp.NET application the ability to search through a large group of historical records based on a "Subject" field. They have a textbox (txtSubjectCriteria) within which they enter search criteria and then I have a radio button list that allows them to select whether their entered criteria should be any part of a word or phrase, or a whole word or phrase. The any part of a word or phrase is easy and the filter string would be: Filter = "Subject Like '%" & txtSubjectCriteria.Text & "%'" I am, however, struggling with the whole word only option. The operators on the DataRowView.RowFilter seem to be a bit limited ? I was expecting to be able to use: Filter = "Contains (Subject, '" & txtSubjectCriteria.Text & "')" or something similar - but this does not seem to be a valid statement ? Does anybody know how I can achieve this - I really need it to be done at this level rather than with the original SQL statement. Thanks for your help Stuart Tag: Error saving data from dataset with expression column Tag: 112672
  - 19
    - Return values from SQL compute commands I have a vb.net program that runs summary commands on columns of a data table. So eg I have a couple of lines of code: MyValue= DataTable.compute(computestring, Nothing) where eg computestring="MAX(" & columnname & ")" Occasionally it happens that the column is full of DBNull.Value values. In this eventuality MyValue seems to take on an unknown type, though it doesn't seem to raise any errors when the column datatype is double. My question is what type could this null value be. I've tried testing for DBNull.Value, Not IsNumeric so that I can trap the error, but it's neither of these. I'm not sure how to test for NaN (If MyValue is NaN... gives a syntax error). Any thoughts please? JGD Tag: Error saving data from dataset with expression column Tag: 112657
  - 20
    - System.InvalidOperationException: ExecuteReader Hi, I have a little application coded with .net 1.1, my problem is that this application worked fine in W2000. But the client change to XP, and from that get this error. This problem show when try to read from a table of Access XP. Anybody knows why this happen now and not with W2000 ??? Thanks Tag: Error saving data from dataset with expression column Tag: 112656
  - 21
    - DataColumn.Expression complex calculations Hi. Does anybody know how to perform complex calculations using the DataColumn.Expression property? Specifically, I'm trying to calculate the difference between a DateTime column and the current date: DateTime.Now.Subtract(certainDate).TotalDays Is there a way to integrate custom functions in this property? Tag: Error saving data from dataset with expression column Tag: 112646
  - 22
    - Trying to find ClientID of web form - Update This works: <form> <asp:TextBox id="name" /> <%= name.ClientID %> </form> But this DOES NOT work: <form> <datagrid id="dg"> <asp:TextBox id="name" /> <%= name.ClientID %> </datagrid> </form> and throws an error of: Compilation Error Compiler Error Message: BC30451: Name 'name' is not declared. Any ida why??? TIA ...Geshel -- ********************************************************************** My reply-to is an automatically monitored spam honeypot. Do not use it unless you want to be blacklisted by SpamCop. Please reply to my first name at my last name dot org. ********************************************************************** Tag: Error saving data from dataset with expression column Tag: 112643
  - 23
    - Displaying many-to-many relation data in dataGrids Hello, I have following problem. I have dataSet with two tables, containing data about some people and a relation describing connections between these people: People: Id Name Contacts: Id IdFriend This is many - to - many relation, every person can have many friends and every person can be a friend of many. I have primary key on People.Id and on Contacts.Id, Contacts.IdFriend, and two relations: People.Id - Contacts.Id and People.Id - Contacts.IdFriend I want to display two dataGrids, one with list of all people, second one with list of friends of person selected in first datagrid. Can anyone give me some suggestion how to do that ? Thanks, Adam Tag: Error saving data from dataset with expression column Tag: 112641
  - 24
    - Trying to find ClientID of web form I need to get the ClientID of a form field for some JavaScript. About 25+ web sites I visited recommend the following method for finding the client ID of a web form: Web Form -> <asp:TextBox ID="datefield" type="hidden" Runat="Server" /> Client ID -> <%= datefield.ClientID() %> Unfortunately, this only provides the following error: Compilation Error Compiler Error Message: BC30451: Name 'datefield' is not declared. Source Error: Line 200: Line 201: Line 202:<%= datefield.ClientID() %> Line 203: Line 204: Why does this throw an error on my page? IF this is wrong, why did the other 25+ MVP's (who recommended this method) also get it wrong? As a hint, here are a few URL's where it gives the exact method that fails for me: http://www.syncfusion.com/FAQ/aspnet/WEB_c5c.aspx (#28.10, link doesn't work) http://www.startvbdotnet.com/aspsite/controls/default.aspx http://www.thecodeproject.com/aspnet/resource_files_in_asp_net.asp http://youngpup.net/2004/distro (second scrollbox) http://www.ondotnet.com/pub/a/dotnet/2003/09/15/aspnet.html?page=last&x-order=date And perhaps the clearest example that an author claims works, but doesn't work with me: http://www.janetsystems.co.uk/Default.aspx?tabid=72&itemid=137 Also, how does one make an <asp:TextBox /> invisible on the web page? Using a Type="hidden" doesn't seem to do the trick (it is still visible). TIA ...Geshel -- ********************************************************************** My reply-to is an automatically monitored spam honeypot. Do not use it unless you want to be blacklisted by SpamCop. Please reply to my first name at my last name dot org. ********************************************************************** Tag: Error saving data from dataset with expression column Tag: 112639
  - 25
    - Trying to find ClientID of web form I need to get the ClientID of a form field for some JavaScript. About 25+ web sites I visited recommend the following method for finding the client ID of a web form: Web Form -> <asp:TextBox ID="datefield" type="hidden" Runat="Server" /> Client ID -> <%= datefield.ClientID() %> Unfortunately, this only provides the following error: Compilation Error Compiler Error Message: BC30451: Name 'datefield' is not declared. Source Error: Line 200: Line 201: Line 202:<%= datefield.ClientID() %> Line 203: Line 204: Why does this throw an error on my page? IF this is wrong, why did the other 25+ MVP's (who recommended this method) also get it wrong? Also, how does one make an <asp:TextBox /> invisible on the web page? Using a Type="hidden" doesn't seem to do the trick (it is still visible). TIA ...Geshel -- ********************************************************************** My reply-to is an automatically monitored spam honeypot. Do not use it unless you want to be blacklisted by SpamCop. Please reply to my first name at my last name dot org. ********************************************************************** Tag: Error saving data from dataset with expression column Tag: 112638

Hi,

I have a dataset created by dragging table from database explorer. Then I
have added a column in dataset with expression cant * price in order to get
calculation from two columns.

This work fine.

But when I try to save data into database using datadapter.update method i
get the error:
Cannot change ReadOnly Property for expression column.

Anyone can help me?

Thanks.

Top

Re: Error saving data from dataset with expression column by Cor

Cor
Thu Jun 23 07:13:42 CDT 2005

JMBC,

>
> But when I try to save data into database using datadapter.update method i
> get the error:
> Cannot change ReadOnly Property for expression column.
>
I assume that this is not a way trying to update an expression column in a
database?

Normally is that column not affected in the update.

Cor

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Re: Error saving data from dataset with expression column by JMBC

JMBC
Thu Jun 23 08:14:05 CDT 2005

NO. The calculated column is not used in any sql statement of the dataadapter.

"Cor Ligthert" wrote:

> JMBC,
>
> >
> > But when I try to save data into database using datadapter.update method i
> > get the error:
> > Cannot change ReadOnly Property for expression column.
> >
> I assume that this is not a way trying to update an expression column in a
> database?
>
> Normally is that column not affected in the update.
>
> Cor
>
>
>

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Re: Error saving data from dataset with expression column by JMBC

JMBC
Thu Jun 23 09:15:01 CDT 2005

Hi,

Finally I have found the response in this site:
http://www.dotnet247.com/247reference/msgs/8/44850.aspx

The problem is caused by the select statement added to the update and insert
command by the dataadapter wizard. Deleting these selects all work fine.

Thanks
JMBC

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Re: Error saving data from dataset with expression column by Cor

Cor
Thu Jun 23 11:16:59 CDT 2005

JMBC,

I seldom use the wizard, however thanks for your information. Reading it, it
becomes very clear.

Cor

Top