Problem in Dataset

Hi,

dim ds as new MyDataset//This dataset i created while Using ADO.NET Connection
dim dset as new DataSet//This is Standard dataset
ds=SQLHelper.ExecuteDataSet(CommandType.StoredProcedure,"spr_Procedure1")

//There is no error in stored procedure
//Then i tried giving like this

dset=SQLHelper.ExecuteDataSet(CommandType.StoredProcedure,"spr_Procedure1")
ds=CType(dset,MyDataset)

//It shows the following error
System.InvalidCastException: Specified cast is not valid.

Or is there any way i can get the dataset using ADO.NET connection & stored
Procedure,If so plz send me the procedure

Thanx in advancePost your question at ADO.NET or VB.NET section to get much response

problem dynamicly populating a checkboxlist from a query

I have the follow, i get the right amout of checkboxes but they all have the same value(System.Data.Common.DbDataRecord)

Dim objconnAsNew SqlConnection(connstring_MPR)Dim objcmdAs SqlCommand =New SqlCommand("SELECT [Parts Master Table].COMMD_CODE as comcode FROM [Parts Master Table] INNER JOIN [Warehouse balance table] ON [Parts Master Table].PART_NUMBER = [Warehouse balance table].PART INNER JOIN POREPORT ON [Parts Master Table].PART_NUMBER = POREPORT.[Part Number] INNER JOIN [DEMAND TABLE] ON [Parts Master Table].PART_NUMBER = [DEMAND TABLE].PART WHERE POREPORT.[PO Bal] > 0 OR [DEMAND TABLE].QTY > 0 or [Warehouse balance table].ONHAND > 0 and [Parts Master Table].M_B = 1 AND [Warehouse balance table].WHSE = 'sgr' AND ([Parts Master Table].FAMILY NOT LIKE 'lam%' or [Parts Master Table].FAMILY NOT IN ('ULTCH', 'REMOT', 'MKSIN')) GROUP BY [Parts Master Table].COMMD_CODE ORDER BY [Parts Master Table].COMMD_CODE", objconn)

objconn.Open()

chkComCode.DataSource = objcmd.ExecuteReader(CommandBehavior.CloseConnection)

chkComCode.DataBind()

objconn.Close()

First thing is, run your query in Query Analyzer and see it returns the same value(comcode) for each row. And secondly set DataText field and DataValue field. [even though it is not necessary for your query]

chkComCode.DataTextField="comcode"
chkComCode.DataValueField="comcode"

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yep i had to go into source and set the textfield/value field to = comcode

problem converting string to integer

Hi, I need to convert the values entered into textboxes by the users before I can insert into db.

have tried the following.

Dim eventnum As string 'tried using integer makes no difference what i declare the variable as

eventnum = Convert.ToInt32(txteventnum.Text)

This value needs to be inserted into the field event_number wich is datatype int

I get the following error message when I try to insert.

Conversion failed when converting the varchar value 'eventnum' to data type int.

Description:Anunhandled exception occurred during the execution of the current webrequest. Please review the stack trace for more information about theerror and where it originated in the code.

Exception Details:System.Data.SqlClient.SqlException: Conversion failed when converting the varchar value 'eventnum' to data type int.

Source Error:

Line 62:
Line 63: ' Execute(query)
Line 64: myCommand.ExecuteNonQuery()
Line 65:
Line 66: 'Close the connection

Source File: C:\Inetpub\loans\MemberPages\Request.aspx.vb Line: 64

Stack Trace:

[SqlException (0x80131904): Conversion failed when converting the varchar value 'eventnum' to data type int.]
 System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) +857242
 System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) +734854
 System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) +188
 System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) +1838
 System.Data.SqlClient.SqlCommand.RunExecuteNonQueryTds(String methodName, Boolean async) +192
 System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(DbAsyncResult result, String methodName, Boolean sendToPipe) +380
 System.Data.SqlClient.SqlCommand.ExecuteNonQuery() +135
 Request.Button1_Click(Object sender, EventArgs e) in C:\Inetpub\loans\MemberPages\Request.aspx.vb:64
 System.Web.UI.WebControls.Button.OnClick(EventArgs e) +105
 System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +107
 System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +7
 System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +11
 System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33
 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5102

based on where your error is occurring, i suspect that the value from the textbox was successfully converted to an integer. This leads me to think that there's something wrong with how your query is constructed. Please post the code for constructing the query.

|||

thanks for the reply here is the code for query.

'Connection String value
Dim conn As String = ConfigurationManager.ConnectionStrings("LoansConnectionString").ConnectionString

'Create a SqlConnection instance
Using myConnection As New SqlConnection(conn)
myConnection.Open()

' Specify the SQL query
Const sql As String = "insert into requests ( [User_Name], [NHI], [Event_Number], [ACC_Number], [Request_Date]) values ('username','nhi','eventnum','accnum','reqstdate' )"
', [Required_Date], [NHI], [Event_Number], [ACC_Number], [Request_Date]
'Create a SqlCommand instance
Dim myCommand As New SqlCommand(sql, myConnection)

' Execute(query)
myCommand.ExecuteNonQuery()

'Close the connection
myConnection.Close()

End Using

|||

resolved it was the query string

was

Const sql As String = "insert into requests ( [User_Name], [NHI],[Event_Number], [ACC_Number], [Request_Date]) values('username','nhi','eventnum','accnum','reqstdate' )"

now

Dim sql As String = "insert into requests ( [User_Name], [required_date],[NHI], [Event_Number], [ACC_Number], [Request_Date]) " & _
"values ('" & username & "','" & reqrddate & "','" & nhi & "'," & eventnum & ",'" & accnum & "','" & reqstdate & "' )"

But thanks for replying

|||

glad you're all set.

But, please read up onSQL Injection Attacks
A parameterized query helps protect from sql injection and resolves issues related to quoting.
http://msdn.microsoft.com/msdnmag/issues/04/09/SQLInjection/