Paging Problem

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  - 1
    - Losing Dataset icon/instance from project I've got a project with a Typed Dataset. The dataset consists of several tables. Every time I attempt to go into the dataset to adjust a table, like adding a new column that was added to the DB, I lose the dataset's icon in the designer and when I look in the project code the line of code where it get's dim'd is missing. I then have to go through a convoluted mess of tweaking to get the dataset back into the project. The XSD & dataset designer always stay intact, but I lose the Dataset from the project it was being used in. This is a VB.NET project in VS.NET 2003. I've had this happen in another project as well. So, I have to assume its a known bug, but I haven't been able to find any refrence to it on MSDN or Google. Any help on how to circumvent this issue would be greatly appreciated. I lose several hours everytime I have to modify the dataset... and when I have to modify the dataset again I've forgotten what the heck it was I did to get it working again the previous time! Tag: Paging Problem Tag: 121429
  - 2
    - Insert BLOB problem Hi all, I am trying to use System.Data.ODBC to insert a file into a binary field in SQL Server 2000. Now, before you yell at me, the reason I am doing this is that I am only writing intitial code against SQL, but this app will need to be able to run against any ODBC compliant DB, so I am also not using stored procedures. I have tangles with this for hours, but I cannot seem to figure out how to just read the contents of a file off disk and write it into a binary field in SQL not using a stored procedure. If I can get that working, I can do whatever I need, but I can't so far. Does anyone have a sample of this or an article? There are many articles for doing this with SPROCS, doing this with SqlClient, not ODBC. I tried just modifying the objects from an SqlClient example, but no avail. Appreciate any help on this... Tag: Paging Problem Tag: 121422
  - 3
    - Problem updating object behind bindingSource Hi folks, I have an form where there are two text boxes bound to an object via a BindingSource. I have implemented a document save function via Binary Serialization that writes the underlying object to disk. The problem is, if a user edits the data in one of the text boxes but DOES NOT leave the text box before selecting the Save menu item, the change in the text box is not replicated back to the object behind the form (the object that is serialized). Hence when I reload the document the Deserialized data contains the contents of the textbox before the user changed it. If the user leaves the textbox first, everything is fine. My thinking is that I need to force the form to propagate its current state back to the object before serializing, but would take some advice on the best way to do this. I appreciate this is not strictly an ADO.NET question but figured that being a data binding issue, someone on here might be able to help. Many thanks in advance. Simon Tag: Paging Problem Tag: 121419
  - 4
    - VB.NET and MYSQL 5.0, Character Set Problem I am writing and VB.NET application, connect to MYSQL 5.0 (Linux) using MysqlConnector.NET The problem is it can't display and update correct Chinese Character. What Can I do? Thank you Tag: Paging Problem Tag: 121414
  - 5
    - BindingSource.Clear method Hiya, I'm mucking around with .net 2, and experimenting with the BindingSource control. I've set the datasource to a dataset and set the datamember property as the table (or perhaps i've directly set the datasource to the table and left the datamember as null). When I run the Clear() method on the BindingSource, I get an exception from the runtime saying that the clear method cannot be used on the underlying datasource. Any ideas what I'm doign wrong? Thanks Tag: Paging Problem Tag: 121409
  - 6
    - MSDN I just installed MSDN on my local computer. I set it up using 'BLANKSAPWD=1, and INSTANCENAME=kennel'. I attached my database using 'oSQL -E -S icc-station\kennel' utility. That went well. My original testing is with SqlServer 2000. and that was fine. The problem that I am having is I get the message 'SQL Server does not exist or access denied' My connecting string follows: this.cnKennel.ConnectionString = "Data Source=(local)\\kennel" + ";initial catalog=kennel" + ";Trusted_Connection=Yes" + ";integrated security=SSPI" + ";Connect Timeout=5"; Please tell me what I doing wrong??? -- Norm Bohana Tag: Paging Problem Tag: 121408
  - 7
    - Hiding columns in a data grid (.net, c#) I wish to display, in a datagrid, only six columns of a table containing about twenty. I've created a data adapter which selects only the desired columns. I created a dataset and a dataview, and specified the dataview as the data source for my datagrid. The datagrid displays the 6 desired columns, in the sequence that I selected them, followed by the remaning 14. I read someplace that this is the default behavior. Two questions: (1) How do I hide the unwanted 14 coulumns? (2) How can I change the column headings to something other than the column name of the underlying table? Thanks, Phil raincounty<*>hotmail.com -- replace the <*> with you know what Tag: Paging Problem Tag: 121407
  - 8
    - DataBinding problem Hello, i written a collection which holds instances of a specifc class. i added a binding like that textBox1.DataBindings.Add("Text", ((MyClass)oMyCollection[1], "Description"); If the content of the textbox changed, the values are saved in the object of the collection where the controls is bound to. my problem is that other controls don't refresh their data. so if i change the value of a property in my instance. the control still holds the old value. i tried the following: this.BindingContext[((MyClass)oMyCollection[1], "Description"].EndCurrentEdit(); but it wasn't the solution. any ideas? Tag: Paging Problem Tag: 121401
  - 9
    - Debugging SQL Server 200 Stored Procedures with ADO .NET With SQL Server 2000 with SP3a we used to be able to debug our Stored Procedures by stepping into them via our ADO .NET code, but we have recently upgraded to SP4 and can no longer do this unless we connect as 'sa'. We have made sue that the Extended Stored Procedure sp_sdidebug can be accessed by the user we normally connect as and we always execute the following line on startup to turn on legacy debugging. exec [master].[dbo].[sp_sdidebug] 'legacy_on' Furthermore we have verified in our DCOM configuration properties that under 'Default Protocols' there is a 'Connection-orientated TCP/IP' entry and this is the first entry in the list. Any help on why we are unable to debug our stored procedures would be greatfully appreciated. Tag: Paging Problem Tag: 121394
  - 10
    - typed dataset + null values + cm.EndCurrentEdit Hi, I have a typed ds which contains a single table which in turn has a number of columns for which "min occurs = 0". The columns from this ds are bound to a bunch of controls on a form. I am having some trouble with the currencymanager when it comes to adding a new row, as follows; 1. Addnew method called 2. User starts entering data 3. User decides to exit form using control box (X) upper right then; Validating event for non nullable control fires and sets cancel to true Form Closing event fires and attempts to catch changes to ds using the EndCurrentEdit in order to allow user the option to stop. EndCurrentEdit causes "System.Data.NoNullAllowedException, "Column 'PS_PhoneNumber' does not allow nulls." Problem: if I don't call EndCurrentEdit the ds.HasChanges is False. If I do, I get the above exception. I thought I should be able to end the edit and check the ds.HasErrors rather than have the exception generated. I suspect I don't understand something here. Any advice would be appreciated. Thanks Paul Sample: (Hopefull enough1) Private Sub ubtnAdd_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ubtnAdd.Click ' Add new patient record. cmPatients.EndCurrentEdit() cmPatients.AddNew() End Sub Private Sub unePhone_Validating(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles unePhone.Validating If unePhone.Value Is System.DBNull.Value Then Me.epPatients.SetError(unePhone, "Phone Number Must Be Entered") e.Cancel = True Else Me.epPatients.SetError(unePhone, "") End If End Sub Private Sub frmMaintPatients_Closing(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles MyBase.Closing ' Check there are no outstanding changes which have not been sent to the DB cmPatients.EndCurrentEdit() ''''' PROBLEM HERE!! If dsMaintPatients.HasChanges Then If Not DiscardUserChanges() Then e.Cancel = True Exit Sub End If End If ' Allow the form to close even if the user has become stuck in validating events e.Cancel = False End Sub Tag: Paging Problem Tag: 121392
  - 11
    - Embeded MySQL with C# I wrote an application using c# and mySQL database. But when I deploy it doesn't work on an other PC. How can I embed mysql in C#. A code example will be quite helpful for me. Any help wll be appreciated. Tag: Paging Problem Tag: 121390
  - 12
    - Retrieving untyped dataset schema What's the best approach to retrieving schema for an untyped dataset? Do it manually, an empty sproc, what else? Tag: Paging Problem Tag: 121389
  - 13
    - Click on hyperlink column to launch audio clips I have a datagrid that consists of a data-bound hyperlink column binded to the "Song Name" column of the data source. When user clicks on one of the links, the associated media application such as RealPlayer or Windows Media Player will be launched. I searched through the MSDN Library and found that Windows API can be used to play simple sounds. Is there other alternatives to achieve it ? Tag: Paging Problem Tag: 121387
  - 14
    - is it possible to use ip:port instead of sid for oracleconnection? for example: connectionstr="DATA SOURCE=192.168.1.11:1521;UID=bnd;PWD=bnd;" instead of connectionstr="DATA SOURCE=sid;UID=bnd;PWD=bnd;" new oracleconnection(connectionstr); is it ok, and what is the format of data source? Tag: Paging Problem Tag: 121384
  - 15
    - Query Builder Tool Is there out a Query Builder Tool that is possible to integrate into my application ? Mainly for MS SQL Server. Which one do you recommend ? Thanks in advance Tag: Paging Problem Tag: 121379
  - 16
    - This has to be a BUG After spending a few hours experimenting the typed dataset serialization (see previous post "How to include public properties in a typed dataset in serialization"), this is what I found which does look like a bug (I'm using the normal serialization with XmlSerializer): . The values for the public property are in fact written into the Xml. They are presented as the attributes of the Element for the Dataset. They have the namespace of "msdata". . If the public property is of Int16, it will be ignored and not written into the Xml. . For the public properties which are written into the Xml, the deserialization does not recover them. This means that the instance returned from the deserialization doesn't have these property values set. So it seems to me that something is only half done here. If the behaviour is by design, then I don't understand why these public properties were written into the Xml in the first place. And why properties with certain data type are not written into the Xml at the same time. Michael Tag: Paging Problem Tag: 121378
  - 17
    - Data->Generate Dataset|Preview Data I am writing an ADO.NET provider for a specialized (non-SQL) data store, and wanted to support the options in the Data menu, specifically "Generate Dataset" and "Preview Data". The documentation on these types of features is near to non-existant, including when you download the VSIP package (I thought that would help but it doesn't). I have the following three problems: 1. I cannot get my DataAdapter implementation to enable these menu options. 2. If I add another adapter, which does enable these options, the Generate Dataset option gives me a dialog box titled "Microsoft Development Environment" with the following text in it: "Retrieving the schema for MyDataAdapter1 failed. Object reference not set to an instance of an object." 3. Also, with another adapter to enable these options, if you select my adapter in the Preview Data dialog, and attempt to "Fill Dataset", you get the following error message in another "Microsoft Development Environment" dialog box: "The data adapter "MyDataAdapter1" is not completely configured. To resolve this problem, configure the adapter by using the Data Adapter Configuration Wizard or by setting the SelectCommand property of the adapter." My question is this. Is there any place that defines what these option expect, or what calls they make to a DataAdapter implementation? Any place where this is documented in a useful fashion. The documentation for all of this is really sparse!!! Help! ;) Tag: Paging Problem Tag: 121375
  - 18
    - Error converting data type numeric to decimal? I am running a stored procedure and getting the error 'Error converting data type numeric to decimal'. I just can't work out why. My stored procedure values are defined like so: @addOn1 decimal(7,2), @addOn2 decimal(7,2), @addOn3 decimal(7,2), @addOn4 decimal(7,2), @addOn5 decimal(7,2), @addOn6 decimal(7,2), @addOn7 decimal(7,2), @addOn8 decimal(7,2) These map to the precision/scale values in my database. I am calling the stored procedure from dotnet like so: sqlCmd.Parameters.Add("addOn1", objPremium.addOn1); sqlCmd.Parameters.Add("addOn2", objPremium.addOn2); sqlCmd.Parameters.Add("addOn3", objPremium.addOn3); sqlCmd.Parameters.Add("addOn4", objPremium.addOn4); sqlCmd.Parameters.Add("addOn5", objPremium.addOn5); sqlCmd.Parameters.Add("addOn6", objPremium.addOn6); sqlCmd.Parameters.Add("addOn7", objPremium.addOn7); sqlCmd.Parameters.Add("addOn8", objPremium.addOn8); try { sqlCmd.ExecuteNonQuery(); blnReturnVal = true; } catch(Exception e) { Debug.Trace.WriteLine(e); blnReturnVal = false; } And getting the exception there. the objPremium.addOn1 - objPremium.addOn8 values are all decimals. I am instantiating them like so and not setting them to anything else (for debug purposes): public decimal addOn1 = -1; public decimal addOn2 = -1; public decimal addOn3 = -1; public decimal addOn4 = -1; public decimal addOn5 = -1; public decimal addOn6 = -1; public decimal addOn7 = -1; public decimal addOn8 = -1; I'm sure it's something obvious, but can anybody spot what I'm doing wrong? Thanks in advance! Tag: Paging Problem Tag: 121370
  - 19
    - MS Access problems Hi there, I'm currently rewriting an old VB 6 (stand alone) application in VB .Net 2003 in which users can create MS Access databases. In the new version I want to add security options like encrypting the database, adding users and groups etc. I managed to create MS access databases and tables using ADOX, but I can't add users and groups to it. I use the following code: Dim myCat as New ADOX.Catalog Dim myCon as OleDb.OleDbConnection Dim myConStr as String Dim myNewUser as ADOX.User Dim myNewGroup as ADOX.Group Try myConStr = "Provider=Microsoft.Jet.OLEDB.4.0; Jet oledb:system database=system.mdw;" & _ "Data Source=C:\Test.mdb" 'Creating the database myCat.Create(myConStr) myCon = New OleDb.OleDbConnection(myConStr) myCon.Open() myCat.ActiveConnection = myCon <<-- This seems to be the problem after debugging the code 'Creating a new group myCat.Groups.Append("User group") 'Creating a new user myNewUser = New ADOX.User myNewUser.Name = "Jan Janssen" myCat.Users.Append(myNewUser) 'Add new user to the new group myNewUser.Groups.Append("User Group") myCon.Close() myCat = Nothing myCon = Nothing Catch ex as Exception MessageBox.Show(ex.Message) End Try When executing this code the following error occurs: "Interface not supported" Can anyone help me out or is there an alternative approach without using SQL servers? thnx Tag: Paging Problem Tag: 121369
  - 20
    - Convert is not a member of String Hi All, I have the following Code: Public Sub SetAccessLevelNull() Me(Me.tableGeneralPasswords.AccessLevelColumn) = System.Convert.DBNull End Sub Im getting a ErroR on this Saying "Convert is Not a Member of String" Could somebody kindly point me in the right direct? Many Thanks NSC Tag: Paging Problem Tag: 121366
  - 21
    - Convert is not a member of String Hi All, I have the following Code: Public Sub SetAccessLevelNull() Me(Me.tableGeneralPasswords.AccessLevelColumn) = System.Convert.DBNull End Sub Im getting a ErroR on this Saying "Convert is Not a Member of String" Could somebody kindly point me in the right direct? Many Thanks NSC Tag: Paging Problem Tag: 121365
  - 22
    - Cannot add integer or long column to microsoft access table using ado.net Hi, I have a problem. I can't add integer or long columns to ms access table using ado.net. Could you just take a look at it. I think sql syntax is correct. The weird thing is that in another program it is working and it is the same code. If you comment out these two lines of code: "IDParent INTEGER, "+ "Position INTEGER, "+ then everything is ok, the table is created. The problem is I can't add LONG or INTEGER columns. I don't know what's going on, maybe it's some kind of a bug? Sample usage: Test.exe c:\\test.mdb using System; using System.Data; using System.Data.OleDb; namespace Test { public class Test { /// <summary> /// The main entry point for the application. /// </summary> [STAThread] static void Main(string[] args) { Test t = new Test(); if (args.Length ==1) { t.Execute(args[0]); } } private string connectionString = ""; private OleDbConnection connection; private bool CreateTableWorkTopics() { string sqlText = "CREATE TABLE WorkTopics "+ "(IDWorkTopic COUNTER, "+ "IDParent INTEGER, "+ "Position INTEGER, "+ "Title CHAR(255), "+ "CONSTRAINT WorkTopics_PK PRIMARY KEY (IDWorkTopic))"; ExecuteNonQuery(sqlText); return true; } private void ExecuteNonQuery(string sqlText) { OleDbCommand cmd = new OleDbCommand(sqlText, connection); cmd.CommandType = CommandType.Text; cmd.ExecuteNonQuery(); } public void Execute(string path) { try { connectionString = "Provider=Microsoft.Jet.OLEDB.4.0;"+ "Data Source=\""+path+"\";"+ "User ID=Admin;"+ "Password="; // create mdb file if (!System.IO.File.Exists(path)) { ADOX.CatalogClass catalog = new ADOX.CatalogClass(); catalog.Create(connectionString); catalog = null; } connection = new OleDbConnection(connectionString); connection.Open(); CreateTableWorkTopics(); connection.Close(); } catch (Exception ex) { Console.WriteLine(ex.ToString()); Console.ReadLine(); } } } } Tag: Paging Problem Tag: 121362
  - 23
    - DataSet write XML Hi, I have observed that DataSet.WriteXML() method does not store "Allow Zero Length", "Indexed", and "Required" properties of the fields of a table in the table schema. dataset.WriteXml(stream, XmlWriteMode.WriteSchema) How do I instruct WriteXML() method to include these information along with field name, type and size? <xs:element name="field1"> <xs:simpleType> <xs:restriction base="xs:string"> <xs:maxLength value="64" /> </xs:restriction> </xs:simpleType> </xs:element> Also, minOccurs="0" translates into which property in the MS Access database? Regards Sanjib NB: Please include "microsoft.public.dotnet.languages.vb, microsoft.public.dotnet.xml" in your reply. Tag: Paging Problem Tag: 121357
  - 24
    - Kevin Yu [MSFT]- How to include public properties in a typed dataset in serialization? The public properties are not related to the typed dataset but defined in the typed dataset class. Although the typed dataset class is marked <serializable()>, these public properties are ignored when the class is serialized. This does not seem to be right. Kevin's reply indicated that dataset serialization is based on the xsd, means that it ignors the public properties which are defined in the partial class. This appears to contradict the basic serialization rule from .NET - public property of a serializable class gets serialized. It does sound like a BUG. So what do i need to do in order to serialize these public properties? For Kevin Yu, please provide a code sample as your pointed direction is just too vague for me to follow. Thanks, Michael Tag: Paging Problem Tag: 121350
  - 25
    - Binding textbox to dataview.table.column Help me out!!!!!!!!! i am creating a windows application.My datahandling class is returning a dataview.i m assigning this returned dataview to a dataview on my winform.then by using a databinding.add method of textbox i binnd one of the column of dataview to this textbox.but when i refill this dataview by another method in my class it does not show record after navigating. plz help me out thanks in advanse Tag: Paging Problem Tag: 121347
- Next
  - 1
    - Serialization Problem: custom properties of a derived DataSet class not serialized I created a strongly typed dataset using the designer and added a couple of public properties via the Partial Class. Everything is fine and the strongly typed data set functions as expected including the public properties until the serialization/deserialization process. When all the custom public properties are total ignored and lost. Is this behaviour by design or simply a bug? Thanks, Michael Tag: Paging Problem Tag: 121325
  - 2
    - Can the application.config file handle provider registration? Hi there, I'm looking into provider-independent data access with ADO.NET 2.0. The available providers should be registered in the machine.config file, but what If I don't have access to that file? Can I register my provider in the application's .config file or some other place? Best Regards, -Benton Tag: Paging Problem Tag: 121324
  - 3
    - Invalid Operation Exception when adding Collection to Binding Source Hello all, Firstly, this is a .NET 2.0 issue. (C#) I have a DataGridView and a dataset that has been generated by the wizard from a strongly typed collection. In my form_load I am attempting to add an instance of this collection to the BindingSource eg. gridBindingSource.Add(myStronglyTypedCollectionInstance); I am getting an Invalid Operation Exception (Objects added to a BindingSource's list must all be of the same type). The collection in question is a strongly typed collection of abstract objects. That is, I have an abstract class which is generalised by two sub classes. I have built a collection to hold the abstracts. Note this happens even though the collection is empty. Is this a limitation of the BindingSource? Any help greatly appreciated. Cheers Simon Tag: Paging Problem Tag: 121323
  - 4
    - Adapter.Update does not change database I am trying to enter a new row into a test database and have been unsuccessful. The code compiles fine and runs with out runtime errors, however after closing the form and checking the database it is the same. Since this is my first time using a database any additional suggestions that I should check on that are not obvious in my code snippet will be useful! Sincere thanks, Rock private void button1_Click(object sender, EventArgs e) { // Create new entry myDatabaseDataSet.UserNamesRow user = myDatabaseDataSet.UserNames.NewUserNamesRow(); user.First = firstTextBox.Text; user.Last = lastTextBox.Text; myDatabaseDataSet.UserNames.Rows.Add(user); // Save new entry this.Validate(); this.userNamesBindingSource.EndEdit(); if(user.RowState != DataRowState.Added) MessageBox.Show("No Changes Seen in DataSEt"); int result = this.userNamesTableAdapter.Update(this.myDatabaseDataSet.UserNames); //Display # of updated rows MessageBox.Show(result.ToString()); } Tag: Paging Problem Tag: 121322
  - 5
    - AddingNew BindingSource Hi All, Need help with the following: I have a DataGridView bound to an SQL Server table. I would like to use the ocrresponding Windows Forms BindingSource's AddingNew event to default a column to a specified value. For example, when the user clicks on an "Add New Customer" button or the "New" button on the BindingNavigator control, I'd like to use the AddingNew event of the BindingSource to default certain values like CustomerID, Quantity, etc... to a value that I assign programatically (value may come from another object or table). The problem is that I have read that I cannot use the AddingNew event of the BindingSource when the source is bound to a table. In the AddingNew event of the BindingSource, I am using typed Datasets and would like to create a new "Customer" row, modify some properties (ID, Quanity, AddingNewEventArgs. That's where the error occurs. Any help? Regards, Giovanni Tag: Paging Problem Tag: 121320
  - 6
    - Disconnected DataSets and DataViews For scalability we wish to use disconnected DataSets and hold them in the application cache. This means that multiple concurrent users will be reading the data (its read only) The DataSet is fairly complicated and contains many tables and many relationships What we would like to do is create a DataView that flattens the in memory DataSet so that we can bind this single view to a control We need to hold the separate tables in memory because there are some tables that have parent child relationships where the parent has many thousands of children (and grand children) think Products and Orders and we want to hold Products and Orders in Memory, the reason is that each Product row is large enough not to warrant holding it multiple times OK, the problem is that a DataView can only have one table and the row filter can only be for that table, what we want to do is an equivalent of a sql select (with a join) but from disconnected a DataSet e.g. Select Product.ID, Product.Code, Product.Image, Order.FirstName, Order.Price from tbl_Product PRoduct join tbl_Order Order on Order.ProductID = Product.ID Any help would be appreciated Tag: Paging Problem Tag: 121312
  - 7
    - Dataview rowfilter Hello Everyone! I'm currently having trouble with a rowfilter where the name of the column containt bracket. Here the name of the column [Measures].[PointX] when i sort the dataview it's ok no trouble DataView dv = new DataView(dt); dv.Sort = "[[Measures].[PointX]] ASC"; //it's ok working But if I add the line it crash dv.RowFilter = "[[Measures].[PointX]] = 0"; with the exception .. An unhandled exception of type 'System.Data.SyntaxErrorException' occurred in system.data.dll Additional information: Cannot interpret token ']' at position 21. Anyone know a workaround? Thanks you Best Regards, Patrice Lamarche Tag: Paging Problem Tag: 121309
  - 8
    - SqlCommandBuilder.DeriveParameters Permissions hello, i'm trying to populate the ParametersCollection of a SqlCommand throug the static method DeriveParameters of the SqlCommandBuilder class everything works fine when using the sa login of the database - but when i try to use a login which only have permissions to "Execute" the stored procedure the method only returns the ReturnValue of the stored procedure as Parameter. i've also tried to grant the permission "View Definition" but with no success any ideas or advices? regards, mike s. Tag: Paging Problem Tag: 121305
  - 9
    - Access Hi, Was wondering if anybody could help. I'm looking to add a lots of records to an access database, but it looks like I'm going to have to insert them one at a time!!! Looks like I'm going to have to do this for each new record.. Insert into Database(<fields>) VALUES(<values>) Was wondering if there was anything similar to the MySQL Implementation where I can add several new rows in one SQL command. Many thanks Wayne Tag: Paging Problem Tag: 121302
  - 10
    - Check Constraints AND ADO.NET Hi all, I have a table where some columns have a constraint (datalength(Field1) > 0, Field2 > 0) When I use the Update method of the SqlDataAdapter to update the table, I receive an error (a generic error)! Why this error isn't generated in the RowUpdating event Thank's in advance Polo Tag: Paging Problem Tag: 121301
  - 11
    - Come ADO experts!!! I asked this question before: I have a Strongly typed DataSet one of the datatables within it has data in it. I have a stored procedure that expects a parameter that returns data that also has got to go into the same datatable. Is it possible to bind one of the columns that is already populated to a paramter of a Dataadapters select command and call the .Fill to execute the stored procedure which will fill the remaining empty columns? -- Regards Ian Tag: Paging Problem Tag: 121300
  - 12
    - DbConnectionStringBuilder I'm working on a general use query tool and in that project I'm currently working on building connection strings for oledb providers after I enumerate the installed oledb providers on a system (side question: this is a tiresome registry read - if you know a better way please let me know) I'd like to present an interface for the user to enter the parameters for the driver. In the msdn docs there a bit that reads "For providers that support specific key/value pairs, the connection string builder provides strongly typed properties corresponding to the known pairs" What I'm hopeing that means is that there is some way to get the known parameters for a particular provider at runtime, but i'm not seeing it. In some fashion visual studio is able to determine the parameters for a given driver..... how does visual studio do that? For example i have a syabse driver that supports all kinds of parameters that most other oledb providers dont. How does visual studio able to detmine what the parameters for a particular provider are? (Sahil: yeah I know about and have thought about temp .udl idea and I may have to go that route, but I would really rather not) /gabe Tag: Paging Problem Tag: 121298
  - 13
    - Connecting to an oracle 9.2 Database with Visual Studio 2003 Hi, I have an Oracle database with about 30 tables all relations in order, data is present in tables that require them. I'm writing a windows service using vb .NET that polls a set of directories for new input files (which are flat files in txt). So far so good. The data contained in those files get parsed into an import entity that can be of the type 'sample' or 'standard'. Yesterday i noticed that my design was done rather poorly and decided to form a Business layer and a DAL layer. I created my business objects (still not all business is already in it). And now I'm trying to access my databank. I tried accessing it using OLE DB for Oracle as well as the Oracle connection; The problem atm is the following. When dragging either OLE DB Connection or OracleConnection to my DAL component. When I try to create a DataAdapter I get an errormessage displaying ORA-00162. I haven't got a clue where this error is comming from. Yesterday I was trying to connect to OLE DB and then an exception was thrown (which I read on this forums had something to do with permissions and read&execute rights on my ORA_HOME directory) Many thanks in advance Tag: Paging Problem Tag: 121293
  - 14
    - ADO.NET 2.0 Automatically insert records into child table Hello ! I've info in 3 tables of SQL database: 1. Users (user_id, login, private_flag, ...) 2. Private (user_id, name, e_mail, ...) 3. Business (user_id, account_number, bank_name, ...) If Users.private_flag equals to 1 then attributes of user are in "Private" table, if it's 0 - in Business one. I created a Windows Form where the main table is Users. And both Private and Business tables are attached to it with a DataRelation-s. When "+" button is pressed in BindingNavigator for Users table I need to insert new record into Private or Business automatically when user selects a value for Users.private_flag. I tried to use various events of BindingSource, DataTable and etc. and insert new record to one of child tables but all was helpless. New record always not inserted. I also noticed that new record not appears in Users table until anotrher record of Users is selected with BindingNavigator. Does anybody know how to realize such a logic ? Or how to allow user to enter Private/Business data after pressing the "+" on Users ? Or where can I read more regarding this ? Thanks. Tag: Paging Problem Tag: 121292
  - 15
    - Mail.SmtpMail.Send won't send to one of my addresses I have an ASP.NET page that sends a Mail.MailMessage to several email addresses (all mine). However, one of the addresses, the one ending in @verizon.net, does not seem to be recieving the message even though the other addresses are. I know the spelling is correct because I have tried sending messages from my other accounts to this address and have recieved them successfully. I also do not know of any junkmail filter that would delete the emails sent using ASP.NET (I have also looked in the junkmail box for this address, and it is empty). The code used to send the emails is as follows: mailmsg.To = "myaddress1@mydomain1.com;" Mail.SmtpMail.Send(mailmsg) mailmsg.To = "myverizonaddress@verizon.net;" Mail.SmtpMail.Send(mailmsg) mailmsg.To = "myaddress2@mydomain2.com;" Mail.SmtpMail.Send(mailmsg) When this code is run (the mailmsg object is created beforehand) it is successfully sent to myaddress1@mydomain1.com and myaddress2@mydomain2.com but is not sent to the verizon address. I do not recieve any errors of any kind that I have noticed. -- Nathan Sokalski njsokalski@hotmail.com http://www.nathansokalski.com/ Tag: Paging Problem Tag: 121291
  - 16
    - Insert a byte() or hexadecimal data to mySQL.. Hi everybody, How do you insert to a column of a table with a blob or binary datatype if there is one, from a byte() datatype? What is wrong? How can I fixed this? I need help. Thanks. Note: The data is in byte() or hexadecimal to be inserted into a column in mySQL table. Code: string sqlText = "Insert table1(id, dataByte) values('" + id + "'," + byteData + ")"; OdbcCommand cmd = new OdbcCommand(sqlText, odConn); //opening connection here int iRes = cmd.ExecuteNonQuery(); Result: iRes = -1 I used Text datatype by converting bytes() to hexadecimal, it returns -1, also. The hexadecimal is too long for statement to be executed. How can I solved this? Is Anyone who can help me? Thanks. denpsia -- MCP Year 2005, Philippines Tag: Paging Problem Tag: 121286
  - 17
    - ADO.NET 2.0 Validation Hi all, Real issue for me here: I'd like to know where it would be best to put validation and which are the events best suited to deal with such record-related operations. There are many options, and I seem to be a bit lost. Many people like the Partial Dataset class as opposed to putting client-side/control-based validation, while others, its the opposite. Do TableAdapters fit into the picture anywhere in terms of validation? How about BindingSource? Should I use that to respond to "Adding New row", "Deleting", "Modifying", etc... or should I use the DataNavigator? All this is kind of confusing. Thus, the best place to put validation code and the best place to capture record navigation (with the possibility to add some logic). I'd like to use the ErrorProvider, etc... What is the best practice/modern OOP way of doing things? Regards, Giovanni Tag: Paging Problem Tag: 121284
  - 18
    - Database Application Development Framework I've written a framework for developing SqlServer-based database applications that folks may find interesting/useful. It's currently available in beta at www.arcabama.com/omlsoftware under DBFramework. There's documentation available for it (both as part of the package and as a separate CHM download). And...my thanks to Don Box who, a couple of years ago, straightened me out on some hairy .NET database application problems. I couldn't have written these libraries without that advice. - Mark p.s. as the download site just went live, please report any problems using it to me at mark@arcabama.com. Tag: Paging Problem Tag: 121282
  - 19
    - Read integer value from Excel file failed Hi all, I have following code to read Excel content into a DataSet string connection = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + fileName + ";Extended Properties=\"Excel 8.0;HDR=YES;IMEX=1;\""; OleDbConnection conn = new OleDbConnection(connection); try { DataSet ds = new DataSet(); conn.Open(); OleDbDataAdapter oAdapter = new OleDbDataAdapter("select * from [Main$]", conn); oAdapter.Fill(ds); conn.Close(); } catch { } One of the column is phone number, and some cells of this column are marked as "The number in this cell is formatted as text or proceeded by apostrophe", I can find a small green triangle at top-left corner of the cell, then values from these cells in DataSet are blank Is there any trick how to write connection string or how to read Excel file? Thanks! -- WWW: http://hardywang.1accesshost.com ICQ: 3359839 yours Hardy Tag: Paging Problem Tag: 121280
  - 20
    - Oracle Updates with DataAdapter failing Well, it appears that the designer generated bogus code. When I drag/dropped the table onto my form the SQL statements seemed to be generated reasonably well, but all of the Parameters.Add() calls included the colon character in front of the parameter name. I noticed explicit documentation that the colon was not to be used in this situation. I fixed this manually, but my DataAdapter.Update() call still updates 0 rows even though I have just modified a row in the DataTable. No error, just doesn't update anything. I'm going to write my own update statement and blow off these time saving designer tools, but I would be curious if anyone knows why this fails?? PS: I see no way to determine exactly what the resulting SQL statement is from the Data Adapter (hm, SQL Logging seems like a pretty nice feature to add to VS.NET there, MS folks!!! My former company built this sanity-saver into our client/server development tools way back in the early 90's). Tag: Paging Problem Tag: 121276
  - 21
    - Dynamic Hyperlink? In my app, I want to create a link from a field in a database, which will always be a file path. I have bound the hyperlink to the db field. I have set in code, the navigate.url to be the value I retrieve from the dataset. Currently, I can see the path in the link and when I click on it, IE will display the text 'start downloading from....' with the path I expect to see. However, nothing is happening. Here is the code I have with two different ways I have tried to set the navigate.url property. Am I missing something? Is there a better way to do this? Thanks hlinkImplement.DataBind() ' hlinkImplement.NavigateUrl = RTrim(DsUpdate1.Tables(0).Rows(0)("doc_implement")) hlinkImplement.NavigateUrl = "file://" & RTrim(DsUpdate1.Tables(0).Rows(0)("doc_implement")) Tag: Paging Problem Tag: 121266
  - 22
    - How to close Connections There's an application which runs on .NET Framework 1.1 and uses SqlClient class to connect to database. It is a server application, but sometime the application is closed without letting int finish it's job. I've seen that when this happens there could be open connections to the database.- Is there a way, in which I can check if there are unused connections and destroy them the next time I open the application?. Tag: Paging Problem Tag: 121265
  - 23
    - Slow Form load/navigation with databinding All, I have a table named "CONTACTS" with 104 records in it, a table named "ZIP_CODES" with 42,471 records in it, and several other tables. I load these records into a dataset, create the relationships, and then bind the controls on the form to the dataset. The ZIP Codes are loaded into a combobox. All the controls load quickly. However, It takes forever to load the form, to move from record to record, or update a record. If I remove the binding from the "ZIP_CODES" table, the problem is gone. The form loads quickly, navigation is quick and deleting/updating is quick. This defeats the purpose, though, as the record is no longer bound. Is there a way that I can still have the ZIP codes databound to insure referential integrity as well as speed up the form/dataset? TIA, Vince Dalton Tag: Paging Problem Tag: 121256
  - 24
    - Connect using SQL Authentication in a non trusted environment Hello all, I need to connect to a SQL 2000 from a .net app using SQL Authentication. My connection string looks like this: Dim conn As New SQLConnection conn.ConnectionString = "user id = validuser; password = validpassword; Trusted_Connection=False; Intial Catalog=pubs; Data Source = 10.24.4.126,1433;Network Library=DBMSSOCN" This connection string works when I use a internal IP to connect to a internal SQL server but not when I need to connect to the outside world. SQL Server is set for mixed mode. Any thoughts. Tag: Paging Problem Tag: 121204
  - 25
    - How do I find this piece of xml in a dataset? Hey all, this may be a noob question but... I am loading an xml file into a dataset but there is a piece of data in it that I can not find in the dataset. In the xml there is an element that looks somthing like this. <somegroupofpeople> <persontype>Male <person> <fname>John</fname> <lname>Doe</lname> </person> <person> <fname>Joe</fname> <lname>Dirt</lname> </person> </persontype> <persontype>Female <person> <fname>Jane</fname> <lname>Doe</lname> </person> <person> <fname>Joe</fname> <lname>Dirt in drag</lname> </person> </persontype> </somegroupofpeople> <somegroupofpeople>... This is just an example. The real data has elements that differ. What I can't seem to find or navigate to is what would be values "Male" or "Female" in persontype. My first impression is that this kind of layout is kind of goofy in that the sex should be an element or attribute of <person>. However I am no xml guru and any tool that I run it through tells me that it is well formed so what do I know. If I needed to do something for persontype in each group of people dependent on its value, how do I find this piece of the xml in a dataset? I hope this makes sense. Thanks all. Tag: Paging Problem Tag: 121198

I've got a PageIndexChanged event handler as follows:

Private Sub dg_PageIndexChanged (ByVal s as System.Object, ByVal e As
System.DataGridPageIndexChangedEventArgs) Handles dg.PageIndexChanged

dg.CurrentPageIndex = e.NewPageIndex
dg.DataSource = ds.Tables("ABC")
dg.DataBind( )
End Sub
___________________________________

The datagrid does not display the next 10 rows of data when I clicked on the
page number. As I have a dropdownlist, I selected another item and then back
to the same item sgain. This time, when I clicked on the new page number, the
next 10 rows were displayed.

This is not what I want. It should be that when a new page number is
selected, the next 10 rows will be displayed immediately.

Don't know what's the problem. Can anyone help ?

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