Adding a new datarow

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  - 1
    - What does this mean? Specifically, the stuff in the square brackets at the beginning of the class decl.. How does it apply to the class? thx. /// <summary> /// Data Access Object for Message /// </summary> [ Transaction( TransactionOption.Required ) ] sealed public class DAOMessage : DAOBase { Tag: Adding a new datarow Tag: 79116
  - 2
    - What does this mean? Specifically, the stuff in the square brackets at the beginning of the class decl.. How does it apply to the class? thx. /// <summary> /// Data Access Object for Message /// </summary> [ Transaction( TransactionOption.Required ) ] sealed public class DAOMessage : DAOBase { Tag: Adding a new datarow Tag: 79114
  - 3
    - Text field padding when using ADO.Net Hello, Can somebody tell me what I'm doing wrong here, please? I'm using ADO.Net from an ASP.Net page to insert records into an Access table. It works OK, except that the value written to the text field ('Name') is always right-padded with spaces to the width of the field. Here is the relevant bit of code: string sql = @"INSERT INTO PRODUCTS (ID, Name) VALUES (?, ?)"; cmd = new OleDbCommand(sql); cmd.Connection = con; cmd.Parameters.Add("@id", OleDbType.Integer); cmd.Parameters.Add("@name", OleDbType.VarWChar); cmd.Parameters["@id"].Value = id; cmd.Parameters["@name"].Value = name; cmd.ExecuteNonQuery(); Why does it pad, even though the parameter type is VarWChar? Thanks. Tag: Adding a new datarow Tag: 79112
  - 4
    - Timeout problem, please help - Timeout problem.zip [0/1] [This followup was posted to microsoft.public.dotnet.framework.adonet and a copy was sent to the cited author.] Hello everybody. I have a problem with ADO.NET when I try to connect to a SQL server database. My C# code call a stored procedure that is used to normalize a database in which there are a lot of mistakes (some record are lower case but some other are upper case etc). The stored procedure works fine in SQL analyzer, but when I try to use it in C# I have a timeout error. In effect when I run the procedure using osql I must wait 5 minutes to complete the operation(there are a lot of record inside the table that I must normalize) but I don't know what I must do to work with my stored procedure in C#. I tried to set connection timeout=600 but after 2 minutes the C# program stops and I have a SqlException I don't know what to do, do you have some idea? The server is correctly connected, it responds to my instructions ( Console.WriteLine(mySqlConnection.WorkstationId); Console.WriteLine(mySqlConnection.ConnectionString); ) The attachments are the stored procedure and the C# code that I use, thanks in advance to everybody. PS the stored procedure isn't the original (that's complicated) but only a "toy" that however block my application! I know in advance that this it an idiot problem, but I did't arrive to resolve it! PPS the table reparto used by the stored procedure is composed by 328128 record Tag: Adding a new datarow Tag: 79111
  - 5
    - Timeout problem, please help - Stored procedure.sql [1/1] begin 755 Stored procedure.sql M0U)%051%(%!23T-%1%5212!P<F]V82`@($%3#0H)55!$051%(')E<&%R=&D- F"@E3150@<F5P87)T;R`]("A54%!%4BAR97!A<G1O*2D-"D=/#0H ` end Tag: Adding a new datarow Tag: 79108
  - 6
    - Timeout problem, please help - Stored procedure.sql [0/1] [This followup was posted to microsoft.public.dotnet.framework.adonet and a copy was sent to the cited author.] Hello everybody. I have a problem with ADO.NET when I try to connect to a SQL server database. My C# code call a stored procedure that is used to normalize a database in which there are a lot of mistakes (some record are lower case but some other are upper case etc). The stored procedure works fine in SQL analyzer, but when I try to use it in C# I have a timeout error. In effect when I run the procedure using osql I must wait 5 minutes to complete the operation(there are a lot of record inside the table that I must normalize) but I don't know what I must do to work with my stored procedure in C#. I tried to set connection timeout=600 but after 2 minutes the C# program stops and I have a SqlException I don't know what to do, do you have some idea? The server is correctly connected, it responds to my instructions ( Console.WriteLine(mySqlConnection.WorkstationId); Console.WriteLine(mySqlConnection.ConnectionString); ) The attachments are the stored procedure and the C# code that I use, thanks in advance to everybody. PS the stored procedure isn't the original (that's complicated) but only a "toy" that however block my application! I know in advance that this it an idiot problem, but I did't arrive to resolve it! PPS the table reparto used by the stored procedure is composed by 328128 record Tag: Adding a new datarow Tag: 79107
  - 7
    - Getting last Insert ID Hi, I'm using a Access database with a dot.net application. To get last insert Id(Autogenerated) from a specific tabel, I have used "Select Max(Id) from table" to populate a datareader. I then use "Reader.getint32" to get the id. This works fine when there is something in the tabel. But when the table is empty I get a cast error, obviusly since the Getint32 returns nothing. Is there a better way to get Last insert Id from a Access database ? TNX Totto Tag: Adding a new datarow Tag: 79104
  - 8
    - OleDBConnection problem if database sesison is killed or database is restarted Dear All, We are facing problem for OleDBConnection if my connection to database is killed or database server is restarted. it gives error: System.Data.OleDb.OleDbException: Session closed/terminated Problem: 1. For executing SQL query we create new OleDBConnection, execute that query and then instead of closing that connection, we put that connection object in static arrayList (freeConnectionList). 2. For next SQL query, it checks in that static arraylist for free connection, if it gets any free connection, then uses that connection object for executing query, else if it cannot find any free connection in this arraylist, it creates new connection, executes query and then add that connection in arraylist. 3. It works fine. But problem comes if my database session is killed OR database is re-started. 4. if my database session is killed OR database is re-start, and I try to fire query using connection object that is there in static arraylist or using new OleDBConnection object, then it generates error. So if my database session is killed or database is restarted, then 1. I cannot use connection objects from static arraylist 2. and if I create new Connection object, then that new connection object also fails to fire query. Solution: 1. If my dadatabse session is killed or database is restarted, and I try to fire a query, then it throws OleDBException, We will catch that exception, then then we will close all the connection from arraylist. For this the code will be like this: Pseudo Code: public void ResetPool() { OleDBConnection dummyConnection = new OleDBConnection(connString); // declare a dummy connection dummyConnection.Open(); // open dummy connection int i = freeConnectionList.Count-1; while ( i >= 0 ) { freeConnectionList[i].Close(); // close connection i--; } dummyConnection.Close(); // close dummy connection } For this I have to create a dummy connection, open that connection and then close that connection at the end when all connections from arraylist are closed. If I do these changes then it works fine. Query: Is this a correct method to handle situaton like database restart or database session killed? OR there is any alternative way of doing the same? Thanx and Regards Jack Tag: Adding a new datarow Tag: 79102
  - 9
    - Q: OleDbCommand Select Statement Hi, I have a OleDbCommand select statement as [string sqlStatement = "SELECT * FROM Contact WHERE Department LIKE '*" + strSearch + "*' ORDER BY Contact.ContactId;";], which retrieve data from MS Access database. The statement always return 0 record. But if I take out the two "*"s, then it will return those correct records. I tested the sql statement with the two "*"s in MS Access itself, and it work fine by returning correct records. I don't understand why it won't work when it is in my web service. Please help. Thank you. -- Soul Tag: Adding a new datarow Tag: 79096
  - 10
    - TURN $12 INTO $12,000 NOW!!! PEEP THIS SHIT YALL MY FRIEND GOT $500 LAST WEEK TRYING THIS SHIT: make extra cash GREAT WAY TO BECOME RICH...INSTANT THOUSANDS This is no scam, read it!!!!!! ------------------------------------------------------------------------ -------- HOW TO TURN $12 INTO $12,000!!!!!!!!!!!!!!!!!!!!!!!!!!!! THIS REALLY CAN MAKE YOU EASY MONEY!! IT WORKS !!! BUT YOU HAVE TO FOLLOW IT TO THE LETTER FOR IT TO WORK!!!! : A little while back, I was browsing through newsgroup, just like you are now and came across an article similar to this that said you could make thousands dollars within weeks with only an initial investment of $12.00! So I thought, "Yeah, right, this must be a scam", but like most of us, I was curious, so I kept reading. : Anyway, it said that you send $2.00 to each of the 6 names and address stated in the article. You then place your own name and address in the bottom of the list at #6, and post the article in at least 200 newsgroup. (There are thousands) No catch, that was it. So after thinking it over, and talking to few people first, I thought about trying it. I figured what have I got to lose except 6 stamps and $12.00, right? Like most of us I was a little skeptical and a little worried about the legal aspects of it : All, So I checked it out with the U.S. Post Office (1-800-725-2161) and they confirmed that it is indeed legal! Then I invested the measly $12.00. Well GUESS WHAT!!?. Within 7 days, I started getting money in the mail! I was shocked! I figured it would end soon, but the money just kept coming in. In my first week, I made about $25.00. By the end second week I had made a total over $1,000.00! In the third week I had over $10,000.00 and it's still growing. This is now my fourth week and I have made a total of just over $42,000.00 and it's still coming in rapidly. Its : Certainly worth $12.00, and 6 stamps, I have spent more than that on the lottery!! : Let me tell you how this works and most importantly, why it works?.also, make sure you print a copy of this article NOW, so you can get the information off of it as you need it. STEP 1: Get 6 separate pieces of paper and write the following on each piece of paper "PLEASE PUT ME ON YOUR MAILING LIST." Now get 2 US $1.00 bills and place TWO inside EACH of the 6 pieces of paper so the bills will not be seen through the envelope to prevent thievery. Next, place one paper in each stating the above phrase, your name and address, and 2 $1.00 bills. What you are doing is creating a service by this. THIS IS ABSOLUTELY LEGAL! Mail the 6 envelopes to the following addresses: #1) Corteney Tomson P.O. Box 55 Dupo, IL 62239 #2) Brad Taylor 6 Terry Ln. Hutchinson, KS 67501 #3) Cedric Etienne 239 Autumn Breeze Way Winter Park, FL 32792 #4) Stephen Mitchell 1977 Alcovy Trace Way Lawrenceville, GA 30045 #5) Melissa Martinez 15440 sw 74 cir ct #607 Miami, FL 33193 #6) Maurice Sawyers 49 Middle Rose St Trenton, NJ 08618 STEP 2: Now take the #1 name off the list that you see above, move the other names up (6 becomes 5, 5 becomes 4, etc?.) and add YOUR Name as number 6 on the list. STEP 3: Change anything you need to, but try to keep this article as close to original as possible. Now, post your amended article to at least 200 newsgroups, message board. (I think there are close to 24,000 groups) All you need is 200, but remember, the more you post, the more money you make!---- DIRECTIONS----HOW TO POST TO NEWSGROUPS, MESSAGE BOARD----------Step 1) You do not need to re-type this entire letter to do your own posting. Simply put your cursor at the beginning of this letter and drag your : Cursor to the bottom of this document, and select 'copy' from the edit menu. This will copy the entire letter into the computer memory. Step 2) Open a blank 'notepad' file and place your cursor at the top of the blank page. From the 'edit' menu select 'paste'. This will paste a copy of the letter into notepad so that you can add your name to the list. Step 3) save your new notepad file as a .txt file. If you want to do your postings in different sittings, you'll always have this file to go back to. : Step 4) Use Netscape or Internet explorer and try searching for various newsgroups (on-line forums, message boards, chat sites, discussions.) Just example you log on any search engine like yahoo. com,google. com,altavista. com,excite. com then you search with this subject ? millionaire message board? or ?money making message board? or ? employment message board? or ?money making discussions? or ?money making forum? or ?business message board? etc. You will find thousand & thousand message board. Click one by one then you will find the option post a new message. : Step 5) Visit these message boards and post this article as a new message by highlighting the text of this letter and selecting paste from the edit menu. Fill in the Subject, this will be the header that everyone sees as they scroll through the list of postings in a particular group, click the post message button. You're done with your first one!. : Congratulations? THAT'S IT! All you have to do is jump to different newsgroups and post away, after you get the hang of it, and it will take about 30 seconds for each newsgroup! ** REMEMBER, THE MORE NEWSGROUPS OR MESSAGE BOARD YOU POST IN, THE MORE MONEY YOU EILL MAKE!! BUT YOU HAVE TO POST A MINIMUM OF 200** That's it! You will begin receiving money from around the world within days! You may eventually can rent a P.O. Box due to the large amount of mail you will receive. If you wish to stay anonymous, you can invent a name to use, as long as the postman will deliver it. **JUST MAKE SURE ALL THE ADDRESSES ARE CORRECT. ** : Now the WHY part: Out of 200 postings, say I receive only 5 replies (a very low example). So then I Made $5.00 with my name at #6 on the letter. Now, each of the 5 persons who just sent me $1.00 make the MINIMUM 200 postings, each with my name at #5 and only 5 persons respond to each of the original 5, that is another $25.00 for me, now those 25 each make 200 MINIMUM posts with my name at #4 and only 5 replies each, I will bring in an additional :$125.00! Now, those 125 persons turn around and post the MINIMUM 200 with my name at #3 and only receive 5 replies each, I will make an additional $625.00! OK, now here is the fun part, each of those 625 persons post a MINIMUM 200 letters with my name at #2 and they only receive 5 replies, that just made me $3,125.00!!! Those 3,125 persons will all deliver this message to 200 newsgroups with my name at #1 and if still 5 persons per 200 newsgroups react I will receive $15,625.00! With an original investment of only $12.00! AMAZING! When your name is no longer on the list, you just take latest posting in the newsgroups, and send out another $12.00 to names on the list, putting your name at number 6 again. And start posting again. The thing to remember is, do you realize that thousands of people all over the world are joining the internet and reading these articles everyday, JUST LIKE YOU are now!! So can you afford $12.. and see if it really works?? I think so? People have said, 'what if the plan is played out and no one sends you: the money? So what are the chances of that happening when there are tons of new honest users and new honest people who are joining the internet and newsgroups everyday and are willing to give it a try? Estimates are at 20,000 to 50,000 new users, every day, with thousands of those joining the actual Internet. AND YES YOU HAVE TO SEND THE MONEY FOR THIS TO WORK!!!dont try not to,IT WONT WORK TRUST ME Tag: Adding a new datarow Tag: 79089
  - 11
    - ANN- Object Relation Modelling Forum Opened at Devbuzz www.devbuzz.com just opened up a forum for discussion of Object Relational Modelling tools which allow you to seperate your business logic from data access. If you're interested in learning more about ORM (which is pretty darned cool if you do a lot of data access work), please join us... http://forums.devbuzz.com/tm.asp?m=28744&appid=&p=1&mpage=1&key=&tmode=1&smode=1&s=#28790 For general info on ORM.. check this out.. http://www.15seconds.com/issue/040112.htm -- Cordially, W.G. Ryan MVP Windows - Embedded dotnetguru@comcast.nospam.net www.devbuzz.com www.knowdotnet.com Tag: Adding a new datarow Tag: 79083
  - 12
    - DataView Hello I am editing serveral textboxes that are bound to a DataView, But I don't know how to updatd my Tables with the changed information thanks for helping me. Tag: Adding a new datarow Tag: 79081
  - 13
    - Connection is busy with results for another command After migrating an existing app from VB6 to VB .Net, SQL operations on ADO started giving this error periodically: Connection is busy with results for another command I am still using the ADODB library -- I did not migrate to ADO.Net Looking at the SQL Server enterprise manager, I see that the .NET version opens 4 database connections, while the VB6 version only opens one (both programs were tested on the same computer with the same databases.) Anyone have insights on why ADODB would launch multiple connections which then collide with one another? Thanks, Lee Tag: Adding a new datarow Tag: 79079
  - 14
    - DAAB: hierarchical updates and deletes I have a parent child relationship that I have having a hard time either inserting and updating or deleting. I have a parent DataTable (Contact) and a child DataTable (ContactPhone). I am using a DataRelation between them. I am also using the MS Data Access Application Blocks. I have read numerous forums on how to delete a child record with changing the AcceptRejectRule to cascade. From what I can understand this is done at the DataAdapter level. I also understand that inserts and updates need to happen in a different order than deletes with a relation. What I am wondering is if and how I can implement a relation like this using the MS DAAB. Has anyone been able to do this and if so how? I thought about extending the SqlHelper.cs, but don't know if there is success in doing that. Thought I would try it out here before pounding my head even more with this issue. Any help would be greatly appreciated and thank you in advance. Thanks. Tag: Adding a new datarow Tag: 79078
  - 15
    - Multiple-step OLE DB operation generated errors... I am getting the following error message: Multiple-step OLE DB operation generated errors. Check each OLE DB status value, if available. No work was done. Below I will outline the scenario that generated, and would appreciate help with this problem, but I have another question as well: I have seen a great number of articles on google and in the .net help regarding this error message and specific instances of how to make it go away, but can someone tell me if you can get the actual individual db error messages when this exception is thrown? I haven't seen anything that talks about that. Is it possible? Problem: I am trying to connect to db2 on an AS/400 using the following code executing with the parameter strProvider = "IBMDA400". I have been adding parameters such as Transport Product and Persist Security Info as I find little bits of info, with no luck. ***************************************************************************** Private Function OleDBInit(ByVal strProvider As String) As Boolean RaiseEvent Begin(templateObj.Exports.Count + 2) RaiseEvent StepNext() 'Initialize and open the database connection RaiseEvent StatusUpdate("Creating OLEDB object...") RaiseEvent StepNext() conOleDB = New OleDb.OleDbConnection Select Case strProvider Case "OraOLEDB.Oracle" conOleDB.ConnectionString = "User ID=" & strUserName & ";Password=" & strPassword & ";Data Source=" & strServerName & ";Provider=" & strProvider Case "SQLOLEDB" conOleDB.ConnectionString = "User ID=" & strUserName & ";Password=" & strPassword & ";Initial Catalog=" & strDatabaseName & ";Data Source=" & strServerName & ";Provider=" & strProvider Case "IBMDA400" conOleDB.ConnectionString = "User ID=" & strUserName & ";Password=" & strPassword & ";Initial Catalog=" & strDatabaseName & ";Data Source=" & strServerName & ";Provider=IBMDA400.Datasource.1" & ";Persist Security Info=True" & ";Transport Product=Client Access" & ";SSL=DEFAULT" Case Else OleDBInit = False Exit Function End Select Try RaiseEvent StatusUpdate("Opening OLEDB connection...") RaiseEvent StepNext() *************************** conOleDB.Open() *************************** Catch eOleDB As Exception RaiseEvent ErrorOccured(eOleDB.Source & " - " & eOleDB.Message) OleDBInit = False Exit Function End Try RaiseEvent StatusUpdate("Connected to database.") RaiseEvent StepNext() OleDBInit = True End Function ***************************************************************************** The exception is thrown when the conOleDB.Open() statement is executed. Thanks, John Tag: Adding a new datarow Tag: 79076
  - 16
    - When a connection closes.... WRT: System.Data.SqlClient.SqlConnection When an SqlConnection goes out of scope, is the .close() called by it's destructor? thanks. Tag: Adding a new datarow Tag: 79070
  - 17
    - SQLDataAdapter.Update code fails, no errors. Any ideas? I am having so much trouble updating this DB. I have the following code in place and all is working well for the UpdatePerson code, but the Update Activity fails with no error message, and no update to the DB. I am trying to re-use the SqlUpdateCommand1 object and I think it is failing because of that. I can see the UpdatePerson code in profiler, but the UpdateActivity never seems to make it to SQL. Can you see what the problem is? Thanks Aaron Public Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click Call UpdatePerson() Call UpdateActivity() End Sub Public Sub UpdatePerson() Dim pID As Integer = Me.GetSelectedPersonID(Me.DataGrid1, DataSet11, "Searches_Activity") If pID = 0 Then Return End If Dim SqlUpdateCommand1 As New SqlClient.SqlCommand() Me.SqlUpdateCommand1.CommandText = "UPDATE Person SET Name_Full = '" & txtFullname.Text() & "', Title_Long = '" & txtTitle.Text() & "', Phone = '" & txtphone.Text() & "', CellPhone = '" & txtAppCell.Text() & "'," & _ "BPhone = '" & txtBPhone.Text() & "', Salary = '" & txtAppSalary.Text() & "', TotalComp = '" & txtCompensation.Text() & "', Resume = '" & txtResume.Text() & "', Bphone_Extension = '" & txtWorkExt.Text() & "', Reg" & _ "ion_CD = '" & txtRegCode.Text() & "'" Me.SqlUpdateCommand1.CommandText = Me.SqlUpdateCommand1.CommandText & " where Person_ID = " & pID SqlDataAdapter1.Update(DataSet11) End Sub Public Sub UpdateActivity() Dim nID As Integer = Me.GetSelectedRecordID(Me.DataGrid1, DataSet11, "Searches_Activity") If nID = 0 Then Return End If Dim SqlUpdateCommand1 As New SqlClient.SqlCommand() Me.SqlUpdateCommand1.CommandText = "UPDATE Activity SET FollowUp = '" & txtFollowUpDate.Text() & "'" Me.SqlUpdateCommand1.CommandText = Me.SqlUpdateCommand1.CommandText & " where Activity_ID = " & nID Try SqlDataAdapter1.Update(DataSet11) Catch ex As Exception System.Diagnostics.Debug.WriteLine(ex.GetBaseException ().Message()) End Try End Sub Tag: Adding a new datarow Tag: 79069
  - 18
    - SqlDataAdapter.Update() I read some records from a text file using OleDbDataAdapter into a DataTable. Now I'd like to upload these records to Sql Server using SqlDataAdapter. Currently, I clone my DataTable and insert records into my cloned DataTable. This way the SqlDataAdapter properly recognizes that the records are new. Does anyone have an alternative technique Thanks Paul Tag: Adding a new datarow Tag: 79067
  - 19
    - DataSet / DataTable / Row selection Hi, Does someone could tell me an easy way to select the last row added in a DataTable inside a DataSet ? Something like : DataSet.Table(myTable).SelectLastRowAdded () Thank you. Tag: Adding a new datarow Tag: 79064
  - 20
    - UTF 8 Encoding in ADO.NET Hello we are into internationzation our App. we are facing one issue : right now, VB.NET is communicating to the ODBC driver (Teradata) in utf16 encoding. but the odbc driver can handle only utf-8 encdoing , not the utf-16. we tried to use th utf-8 encoding function to convert the utf8 to utf16 which is not useful in this case because it stores the data in byte array. Is there is any specificed functions through i can set the Globally the Odbbc communcation to UTF8? please let me if you anybody has faced this issue or anyworkaround thanks paul Tag: Adding a new datarow Tag: 79063
  - 21
    - Identifying a newly created row ? Hi I have a DataGrid bound to a DataView, and when adding a new row to the view I want it to be the current/selected one I've tried the followerin DataRowView row = myView.AddRow() row["Date"] = DateTime.Today Tag: Adding a new datarow Tag: 79061
  - 22
    - SQLConnection Object Please HELP??? I have declared a property as a SQLConnection Object. In this implementation this property is being used in a class which is derived from a Web Control Base Class. My Class once built exposes properies in the designer. It exposes the SQLConnection Property as well. The problem is that when I use the designer to build a connectionstring for the porperty it doesn't pass it thru to the control in run time the connectionstring property comes back null meaning not initialized. The property was implemented in the standard. Dim object as new Object Property as Object get return Object end get set Object = value end set etc... Any ideas on how to use this object as a property. The SQLConnection class cannot be inherited from so I am at a loss... Thanks in Advance! Chris... Tag: Adding a new datarow Tag: 79058
  - 23
    - Optimising app Hi We have an access application running over a win2k network. I have now rewritten the ap in vb.net and the problem is that the vb.net app runs generally slower(!) then than the access app. I am using a typical dataset/dataadapter scenario and doing most of the things in code including the data access layer and individual field binding. I am reading one master record at a time so this should not be too slow(?). The detail records appear in grids but these are indexed retrieval. How can I optimise the application? What areas can I look into and what techniques can I use to pinpoint the bottlenecks? Thanks Regards Tag: Adding a new datarow Tag: 79056
  - 24
    - Can someone educate me? I have been building a windows app with a sql query, but I was using a view and I learned that it is very difficult to use a view for updates. So I began investigating this and found some information regarding creating multiple sqldataadapters, one for each table, and then generating a dataset to include all of the tables (sqldataadapters). The information was found at: http://msdn.microsoft.com/library/default.asp?url=/library/en- us/vbcon/html/vbwlkwalkthroughcreatingmaster-detailwindowsform.asp I have then edited the resulting XSD document and added realtionships and keys, in an attempt to replicate the relationships that exist in my SQL view. So I have a few questions about how to proceed selecting and updating the data. Now that I have multiple dataadapters, and each one has it's own select/insert/update/delete commands, and I had previously selected from a view which contained all of the necessary columns, how do I select these multiple columns from multiple tables and maintain the relationships? Which DataAdapter do I use for the select? When I do the .fill, which dataadapter should I use? How do I get the selected columns to appear in my datagrid? Why does my datagrid have a plus sign in the row header and all of the key relationships as links? Is there any material that covers these questions? I have been unable to find many relavent articles. If there is a way of updating a view, please let me know how, I may be able to salvage the original application. Thanks for your time. Aaron Tag: Adding a new datarow Tag: 79052
  - 25
    - DataAdapter.Update Problem hi all, I'm building a typed dataset from a sql table. Later programmatically inserting rows upon user data. When I execute DataAdapter.Update(ds). I get a constraint violation on one of the columns which is non-null column. Looking at the XML data in the dataset, I get an exception on a row that is not there in the table rather a row that should be next in the sequence. For example If I insert 3 rows in the table in the dataset. Then i get error xyz column does not allow NULL data, insert fails. Can anybody guide me thru this problem. Thanks in advance. -HKM Tag: Adding a new datarow Tag: 79051
- Next
  - 1
    - DataGrid newbie question How to change columnheader's text in datagrid ? TIA Tag: Adding a new datarow Tag: 79048
  - 2
    - Detect changes to record in SQL Server CE I'd like to find an easy way to find out if a record in SSCE was changed by the user in my VB .NET app. I'm thinking of filling a DataSet object with the original record, show the record to the user for editing, and then after the user is done, filling another DataSet object with the record from the DB and looping through the columns in the 2 DataSets to see if anything has changed. It would be cool if you could do a DataSet.CompareToDB to find out if the DataSet you have is still the same as in the underlying database. Does anyone know a better way to do this? Tag: Adding a new datarow Tag: 79047
  - 3
    - Concurrency Problem Hello to all, I have a problem between 2 programs I have running. We have got an old databridge for our clients to upload data to our central database. This one is written in C++ (not by me). We now have a new Databridge developped, which is written in VB.NET. Functionally they are the same, but technically there are differences. I think we have got a concurrency problem, because when the new Databridge (VB.Net) is running (several instances), the old databridge will not run. The error given by the old databridge, is that it cannot connect to the database, while it can when NOT using the new databridge. Some technical details: Old Databridge: - C++; - using port 8041 (this one has a direct connection with the client); New Databridge: - VB.Net All is running on a Win2K SBS SP3 with SQL Server 2000. It is difficult for me to explain, so when more information is needed, please ask me!! Thanks to everyone in advance. Kind Regards, Marcel Groffen Tag: Adding a new datarow Tag: 79040
  - 4
    - Moving Data Between 2 Databases (SQL) I have created a web form that enables a user to pass a large amount of data between 2 different SQL 2000 Databases. The current methodology is to extract the source data, store it in a .Net dataset and then using the CmdBuilder, pass each line of data out to the destination database. I'm having some issues with the size (1000s of lines) and time of the data transfer that invariably ends up with either a SQL timeout (I have set all Command.Timeouts=0) or the aspnet_wp.exe process cycles during inactivity. I have attempted to use SQLServer session state management, but am not very familiar with exactly how that works (authentication is also an issue here). My question is, can I use a different method of moving the data from the dataset to the database? I feel as though there must be a more efficienct, less time consuming way. Is it possible to move an entire dataset at once? Can SQL and .Net perform this? Thanks in advance for your help. Rob Tag: Adding a new datarow Tag: 79035
  - 5
    - Fill question Does a Fill command make an automatic connection when initiated? When it is through does it automatically disconnect? I am just wondering if I need something like the following around a fill command? mySqlConnection = New SqlConnection(myConnectionString) DaContracts.Fill(DsMain1, "Contracts") mySqlConnection.Close() Tag: Adding a new datarow Tag: 79034
  - 6
    - Cancel a delete operation Hi, I am trying to cancel the deletion of a datarow. When the user presses the Delete button, a messagebox displays asking the user if they really want to delete the current row. If "Yes", then the delete occurs; if "No", then the current row remains in the table and is not marked for deletion. My problem is that if the user presses the "No" button on the messagebox the row is still removed from the table (marked for deletion). How can I stop that from happening using the above code description? Here's my code: ****************************** With Me.BindingContext(dvCustomers) ' references a dataview object Select Case CType(sender, Button).Name 'other case statements are omitted here; they work fine Case "btnDelete" MsgBox("Are you sure you want to delete the current row?", & _ MsgBoxStyle.YesNo, "Delete Row") If MsgBoxResult.Yes Then .RemoveAt(.Position) UpdatePosition() 'utility method End If If MsgBoxResult.No Then .Position = .Position 'problem occurs here - need help End If End Select ****************************** Thanks, Roshawn Tag: Adding a new datarow Tag: 79029
  - 7
    - Filters with Dataview or new SELECT I am new to database programming, and would like to follow the preferred programming methods when possible... I have large databases, in a small 'always connected' environment. I have been pulling large tables, and creating filters with some checkboxes etc.., which create dataviews. Couple of questions: 1. Is there an easier way to create the filters than a bunch of IF THEN's to create the filter string? (ie: if first filter add "(", if last add ")", if not first or last add " or ")... 2. Can I use the Compute command on dataviews? 3. I have been creating some classes to help with the 'logic' of analysis on some of the data. It appears to me that developers choose between either using the DataAdapters, Datasets and bound data direct from the database for their forms, or they create class objects, and bind the classes to the datasources. It would appear that classes would be the safest, but more complex route. The VB books that I have spend good energy on classes, and then good energy on ADO, but always seem to separate ADO from classes (ie: run through all the standard dataadapter/dataset bound directly to the forms components). I am currently enjoying the Deitel VB.NET book, which I highly recommend to beginning programmers - but it will take me some time to get through it. Looking forward to any comments. Masa Tag: Adding a new datarow Tag: 79024
  - 8
    - Repeater Vs Datagrid Hi All For one page I want to implement sortng as well as paging. Curretly that page is using datagrid for data binding and sorting. Datagrid supports attributes like sortexpression and sort order to provide sorting very easily. is there any thing supported by repeater. Also for repeater I have one paging repeater class ready with me. So, i vcan simply derive a class from it and implement things But, what i want to know is which one is better keeping into mind the performance? datagrid also supports paging. but, i suppose it will fetch all the records only to sow 25 out of it. So, can anyone please guide me on this for points like performance, less developement time etc.. Tag: Adding a new datarow Tag: 79020
  - 9
    - DataSet serialization Hi all, I have my own classes that derives from DataTable, Ex. [Serializable] public class MyTable1 : DataTable { public MyTable1() : base { ... } public MyTable1(SerializationInfo info, StreamingContext context) : base(info, context) {} } My business layer create and fill the table and add it to the DataSet obectr and send serialiazed to the client via remouting, on the UI side when I get the table the type is simple DataTable, why ? How to serialized and desirizlized the typed DataTable, I want to get typed DaTable with best regards Viorel ghilas Tag: Adding a new datarow Tag: 79019
  - 10
    - ODBC API Hi I don't know how to access the ODBC API through C#. The VS.NET provides OLEDB Data Provider but not ODBC E.g., select * from tbl where id= To get the data type (description) of the column 'id', the ODBC provides a function 'SQLDescribeParam()'. But, I don't know how to access this function through C#.Could anyone help me TIA Arrun Tag: Adding a new datarow Tag: 79014
  - 11
    - rergarding assembly load error hi, i'm trying to use Mono.Data.SybaseClient.dll (sybase ADO.net driver) from a C# windows forms application. on the line where i first reference the file, i get an error saying "unable to load file Mono.Data.SybaseClient.dll". the file i've stored in my applications debig directory. any help please. TIA "Vinit". Tag: Adding a new datarow Tag: 79013
  - 12
    - DataColumn.Add bug? DataType parameter cannot be added I am trying to create a DataColumn with Name and DataType parameters. As I understand from the documentation, one of the overloads supports creation of a column with these two parameters. When I tried folllowing, however I get error saying 'int' denotes a 'class' where a 'variable' was expected code ------- DataColumn dc = new DataColumn("Name", System.Int32) or DataColumn dc = new DataColumn("Name", System.Type.GetType(System.Int32)) or MyTable.Columns.Add("Name", System.Int32) ERROR: ------- 'int' denotes a 'class' where a 'variable' was expected I am using .NET Framework 1.1 in Visual Studio.NET environment. Is this a bug or am I doing something wrong Tag: Adding a new datarow Tag: 79000
  - 13
    - Problem with a DataAdapter - Newbie Question Hi In the following code, I get an Error when I try to Fill the Dataset String sql = "SELECT * FROM Table1 UNION SELECT * FROM Table2 UNION SELECT * FROM Table3" SqlDataAdapter earnAggAdapter = new SqlDataAdapter(sql, con) earnAggAdapter.Fill(tempDS, "Earnings"); // I get a "System Error" her If I try with only the Union of Table1 and Table2 it works Does that mean that the DataAdapter does not support more than one Union in the same statement Is there another way to make this work thanks Jane Tag: Adding a new datarow Tag: 78998
  - 14
    - Connection to paradox 4 from vb.net application ? Hi, How can I connect to paradox 4.0 from my vb.net application ? Any sample code ? Help me ! Tag: Adding a new datarow Tag: 78997
  - 15
    - SqlDataReader advancing on each line of executable code within a loop I have the following code (this is only a small snippet of the code) compiled into a VB.Net exe file. The SqlDataReader (myReader) is populated via an SqlCommand.ExecuteReader() method call where the CommandType is a stored procedure on SQLServer2000. 1: myReader = myCommand.ExecuteReader() 2: Do While myReader.Read() 3: Select Case myReader.GetInt32(0) 4: Case 1 5: ' do one thing 6: Case 2 7: ' do something else 8: Case 3 9: ' do yet another thing 10: End Select 11: ' more processing of the first record Loop According to the SqlDataReader documentation it is supposed to advance through the records on each call of the Read method and it is supposed to be positioned just prior to the first record right after the ExecuteReader method fills it. The issue I am experincing is that the reader is positioned on the first record after the ExecuteReader method (line 1). Consequently, after the Raed method is called on line 2, the value of the Select Case expression is now that of the second record. Also, after each Case evaluation (lines 4,6, and 8) the reader is advancing. Therefore, by the time it loops back to the Read method (Line 2) it is impossible to determine where the reader will be positioned. Line 1 executes: reader positioned on record 1 Line 2 executes: reader positioned on record 2 Line 3 executes: reader positioned on record 3 Line 4 executes: reader positioned on record 4 Line 6 executes: reader positioned on record 5 Line 8 executes: reader positioned on record 6 Line 9 executes: reader positioned on record 7 Line 11 through N executes: the reader advances for each executable line of code. Given that this is an exe file, there is no web.config file, so I'm wondering if there is some other location that a particular setting may be causing this behavior. I know I could put the initial data from the stored procedure int a DataSet and then iterate through the Rows collection, but I'd rather keep it simple with the Reader.Read methodology. Any help or insight into the cause of the observed behavior will be appreciated. Thanks, Tim Tag: Adding a new datarow Tag: 78994
  - 16
    - Connections Not Closing I am using the data access application block running on Windows server 2003 and accessing SQL 2000 database (on the same box). I have some very simple code that is getting executed from a asp.net page. The code is calling executeNonQuery in a loop 30 times. I notice that after the code executes and I go into SQL Enterprise Manager and look at the open connections there are 30 open connections. Is there something I am missing ? I thought the application block would handle closing the connections. The other interesting thing is if I run the same code on Windows 2000 server accessing the database on the 2003 server everything works ok. Any ideas ??? Tag: Adding a new datarow Tag: 78991
  - 17
    - Sysntax Error Inserting into a table with an OleDbCommand Hi all, I need another set of eyes to look at a problem I'm having. I'm trying to insert data into a Micrsoft Access 2002 table using the following SQL statement (all fields are Text): "Insert Into Customers (UserName, Password, FirstName, LastName, Address, PostCode, PhoneDay, PhoneEve, PhoneMob) Values ('Jack', 'beanstalk', 'Jack', 'Beanstalk', 'Nowhere', 'Nothing', '00000000', ' ', ' ')" As far as I can tell, there is absolutely nothing wrong with this Insert statement but ADO.Net thinks different and I keep getting a "Syntax error in INSERT INTO statement" error. The code I'm using is as follows: bool AllOk = true; RowsAffected = 0; try { OleDbConnection cn = new OleDbConnection(cnString()); cn.Open(); OleDbCommand cmd = new OleDbCommand(SQLstmt, cn); RowsAffected = cmd.ExecuteNonQuery(); <----THIS DOESN'T WORK cn.Close(); cn.Dispose(); cn = null; cmd.Dispose(); cmd = null; } catch (Exception e) {AllOk = false;} I'm getting desperate, can anyone tell me what I'm doing wrong. Regards. Wole London. -- =============================== Life is not fair, get used to it! God is fair, get Him! Tag: Adding a new datarow Tag: 78989
  - 18
    - Problem with Odbc and DB2 Hi.. My trouble is the follow I have a connection with System.Data.Odbc to DB Db2 v6.1 I called a storedp rocedure, this retrun 2 resultset, i fill a dataSet with a OdbcDataAdapter created with a OdbcCommand and the name storedprocedure and builded sentences with OdbcCommand Bulider. When i execute the DataAdapter.Fill(dataSet) i got the dataset with a table but this raise a error that is: System.Object "{"Referencia a objeto no establecida como instancia de un objeto." }" Thx by your help. Tag: Adding a new datarow Tag: 78988
  - 19
    - Microsoft Dotnet, Timestamp, and Char <very odd> Hi there, I am calling a number of Oracle stored procedures via the Microsoft OracleClient and the ODP.Net client (Using OracleDataAdapter.Update and/or Direct OracleCommand.ExecuteNonQuery in both) and I am noticing that any char parameters are over-padded with a full set (eg. 5 for char(5)) of blank characters (even when no padding is necessary or in addition to correct padding) whenever they are located after a timestamp parameter. This, of course, causes an 'Inserted value too large' error on those overpadded columns. The timestamp parameter has a null default, and causes no problems if the parameter is not passed and the default applied. However, if the parameter is passed with a actual value or DBNull.Value then the error occurs. Has anyone experienced anything like this? We are faced with making sure timestamp parameters are always at the bottom of the parameter list or using varchars for all logically fixed string columns. Neither really addresses the root problem. Thanks, Tracy Fletcher Tag: Adding a new datarow Tag: 78983
  - 20
    - Query string issue with Microsoft access. Hello Everyone, I am having an unusual problem. I have this string that I am using as the Select Command for an Access database: SELECT time.employee, time.timein, time.timeout, time.ichkalt, time.ochkalt, time.realin, time.realout, employees.FName, time.iDate, time.oDate, FROM departments INNER JOIN (employees INNER JOIN [time] ON employees.employeeid=time.employee) ON departments.departmentid=employees.departmentid WHERE ((time.oDate) <= " & o & " ) And ((employees.employeeid)= " & eid & " ) AND ((time.iDate)>= " & i & " ) The i, o, and eid variables have been declared already. The result set works when you remove the 'oDate <=" & o & " )' part of the statement. When you run the query without that criteria, the result set is returned correctly. When you add that criteria to the string, no results are returned, even when I am inserting correct information. Does anyone have a clue as to what to do? Thanks in advance. Tag: Adding a new datarow Tag: 78982
  - 21
    - Confused about DataRowVersion.Default From MSDN on DataRowVersion.Default: "The row the default version for the current DataRowState. For a DataRowState value of Added, Modified or Current, the default version is Current. For a DataRowState of Deleted, the version is Original. For a DataRowState value of Detached, the version is Proposed." Reading the above, I would assume that this code: ///// ReturnValue = MyDataRow[ "MyFieldName", DataRowVersion.Default ]; ///// Should be equivalent to this code: ///// if ( MyDataRow.RowState == DataRowState.Deleted ) { ReturnValue = MyDataRow[ "MyFieldName", DataRowVersion.Original ]; } else { ReturnValue = MyDataRow[ "MyFieldName", DataRowVersion.Current ]; } ///// However, the first block of code throws DeletedRowInaccessibleException while the second one works just fine. Am I reading the documentation wrong? What am I missing? Thanks, -Steve Tag: Adding a new datarow Tag: 78981
  - 22
    - Problem with SQL Server I have an asp.net form that works fine with an Access database. Now I want to use Sql Server 2000. It is installed on the same Windows 2003 machine as the aspx code runs. I cannot seem to have a SqlConnection successfully connect. I use the following: string str = "Persist Security Info=False;Integrated Security=SSPI;database="+strDatabase+";server="+strServer+";Connect Timeout=30"; m_SqlConnection = new SqlConnection(str); m_SqlConnection.Open(); I get Login failed for user 'NT AUTHORITY\NETWORK SERVICE' I have also tried to leave out the Persist Security Info and Integrated Security, and replace it with uid=sa;pwd=<my sa password here> but I get the error: Login failed for user 'sa'. Reason: Not associated with a trusted SQL Server connection. The same thing occurs for any user that I add to the Enterprise Manager. At this point I am not sure what I need to do to configure Sql Server. I know that there are many knowledgable Sql Server users out there. Can anyone answer my question? Tag: Adding a new datarow Tag: 78979
  - 23
    - odd behaviour adding record to sql database i have created a form to submit data to an sql database, and it seems to work, except for one glitch. one of the fields, the "creditcardnumbertxt" text box, when entering a number with more that 7 characters, does not work. sql says it will be truncated. in the asp code, the database, and the sql procedure, the field is correctly set to allow a (sql datablase) char type of 18 characters in size. here is the error it spits back ---------------------------------- String or binary data would be truncated.The statement has been terminated..Net SqlClient Data Provider ----------------------------------- in the code behind the page, these are the relevant lines: ------------------------------------ cmd.Parameters.Add(New SqlParameter("@credit_card_nbr", SqlDbType.Char, 18)) cmd.Parameters.Item("@credit_card_nbr").Value = RegCreditcardnumberTXT.Text ----------------------------------- the relevant lines in the procedure in the sql server is ----------------------------------- @credit_card_nbr char(18), ------------------------------------ any help would be great thanks for the help bryan Tag: Adding a new datarow Tag: 78977
  - 24
    - Strange ADO.NET/Sybase/Sybase OLEDB problem We've recently run in to a very strange problem with a windows service that we have developed in VB.NET and that accesses a Sybase database using the Sybase OLEDB driver via ADO.NET. Every morning about 5am, the windows service checks a specified directory, looking for data export files. If it finds them then it parses them, uploads the contents to a set of temporary tables and then runs a stored procedure (call it MergeData) to merge the needed data from the temporary tables in to the tables used by our main system. It then fires off another couple of stored procedures to prepare report data and then a set of reports are generated. This has all worked fine for a couple of months now. All of a sudden the MergeData stored proc has started to finish prematurely before it has completed all of the processing it is supposed to do. The strange thing is that it doesn't raise any errors back to the windows service. It just seems to stop doing what it was doing before it has completed all of the processing and returns control to the windows service, which then carries on with the other stored proc calls. The even stranger thing is that if we then run the MergeData stored proc directly on the database it works fine and completes all the processing it was supposed to do. However, it gets even stranger. The same installation of the windows service that was used on our live server was installed on our test server, the same data export files were copied across and it works perfectly. The test server uses the same versions of .NET framework, Sybase OLEDB driver and Sybase database. So from the surface the test server looks to have exactly the same software on it - both the software we developed and the third party software we use. Why would a stored procedure not complete when run from an application (without throwing any errors) but work fine when run interactively from the database (without throwing any errors)? And why would the same version of the application on another environment work perfectly. Both the command and connection timeouts on our OLEDB objects are set to 20mins and this timeout is not being reached. The process finishes prematurely within about 9-10 minutes and then continues with the other stored procs. We've had timeout issues before but they have always thrown errors. Has anyone seen this sort of problem using ADO.NET, Sybase or the Sybase OLEDB driver? As you can see it's proving to be frustrating trying to logically conclude where the problem resides. Our code seems fine on the test server but doesn't seem to work on the live server. Therefore you'd think it would be an environment issue, however the MergeData stored proc works fine on the live server when run interactively from the database. Very confusing! :-) Sorry for the crosspost but I haven't a clue which bit of our system the problem resides in. Thanks for any help you can give, Steve Tag: Adding a new datarow Tag: 78974
  - 25
    - SOLVED: CaseSensitive and Guid / Find() I just though I would share with the group a small problem i ran into then solved after banging my head on the monitor for a few hours. For my dataset i have an XML schema that i load up. Its not quite a strongly typed dataset, i just look for scheama changes with my data adapter. Anyway.... In my dataset the primary key(s) of tables are uniqueidentifiers. Unfortunately some of the columns coming from the database are coming out as varchar() ..don't ask , i want them all as unique ID's. So looking at the XSD schema i'll see entries like <xs:attribute name="Record_GUID" type="xs:string" msdata:DataType="System.Guid, mscorlib, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" /> Loading up data into the dataset works fine. But, I found that some of the fields defined as above are of type System.Guid others are strings. Whats the difference ? If the field was a varchar in the DB and I forgot to run a Cast(Record_GUID as uniqueidentifier) operation on the column, then it shows up as System.String. Now here's the rub... values in the fields are of type string, but when you run a find on the object the compare seems to be binary ...that means it ignores the Table.CaseSensitive setting. So Table.Rows.Find( "2F79A7BA-9AD9-4D3E-835F-780FB2A9CE13") is different than Table.Rows.Find( "2f79a7ba-9ad9-4d3e-835f-780fb2a9ce13") even though the objects in the column are of type string. Anyway, i'm not sure if this is a bug, or if the data adapter that fills the schema should throw an error. I just hope this helps someone save a few tedious hours of debugging. Regards, -eric Tag: Adding a new datarow Tag: 78967

Hi everybody
I am trying to take an existing datarow from a datatable, modify its Primary Key value
and reinsert into the datatable as a NEW (datarowstate.added) row. The code below i
the track I have been pursuing, but I keep getting the error that the datarow already belong
to another table. This is despite the fact that I essentially murder the temporary datatable I create to
modify the datarow. Any suggestions

'Create new table and import current dataro
Dim dTable As New dsPatients.dtPatientsDataTabl
dTable.ImportRow(DsPatients1.dtPatients(0)

'Reset PtID to negativ
dTable(0).PtID = -

Dim dRowNew As DataRow = dTable(0
'Get rid of old tabl
dTable.Clear(
dTable.AcceptChanges(
dTable.Dispose(
dTable = Nothin

'Try to add modified row back t
'original table as a new ro
DsPatients1.dtPatients.AdddtPatientsRow(dRowNew

JT

Top

Re: Adding a new datarow by Miha

Miha
Thu Feb 05 11:40:41 CST 2004

Hi,

Instead of ImportRow you might use LoadDataRow and pass it array you get
from original row (DataRow.ItemArray).
Something like:
dim rowArray as object[] = DsPatients1.dtPatients(0).ItemArray
rowArray(0) = newPkId
dTable.LoadDataRow(rowArray)

--
Miha Markic [MVP C#] - RightHand .NET consulting & development
miha at rthand com
www.rthand.com

"JTnospam@verizon.net" <anonymous@discussions.microsoft.com> wrote in
message news:AF481A2F-535B-40C9-A73E-5EA2224ADC40@microsoft.com...
> Hi everybody,
> I am trying to take an existing datarow from a datatable, modify its
Primary Key value,
> and reinsert into the datatable as a NEW (datarowstate.added) row. The
code below is
> the track I have been pursuing, but I keep getting the error that the
datarow already belongs
> to another table. This is despite the fact that I essentially murder the
temporary datatable I create to
> modify the datarow. Any suggestions?
>
> 'Create new table and import current datarow
> Dim dTable As New dsPatients.dtPatientsDataTable
> dTable.ImportRow(DsPatients1.dtPatients(0))
>
> 'Reset PtID to negative
> dTable(0).PtID = -1
>
> Dim dRowNew As DataRow = dTable(0)
> 'Get rid of old table
> dTable.Clear()
> dTable.AcceptChanges()
> dTable.Dispose()
> dTable = Nothing
>
> 'Try to add modified row back to
> 'original table as a new row
> DsPatients1.dtPatients.AdddtPatientsRow(dRowNew)
>
> JT

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Re: Adding a new datarow by anonymous

anonymous
Thu Feb 05 12:16:09 CST 2004

Miha,
Thank you for your wonderful idea. It lets me do what I want in three lines of code
Thanks again
J

'Create array and import current dataro
Dim rowArray() As Object = DsPatients1.dtPatients(0).ItemArra

'Reset PtID to negativ
rowArray(0) = -

'Add modified row back t
'original table as a new ro
DsPatients1.dtPatients.LoadDataRow(rowArray, False)

Top