Hi All,
I have the following error occur for some users occasionally, most often it seems when the computer enters sleep mode. (The front end has background threads which periodically check certain things with the back end).
'Fill: SelectCommand.Connection property has not been initialized.'
The following is my code:
What is confusing me on this is that by getting to the point it does, the connection must be returned without issue, but fails when it is actually used.
Its a VS2008 project on .net 3.5, connected to an MSSQL express server on a networked machine.
TIA
I have the following error occur for some users occasionally, most often it seems when the computer enters sleep mode. (The front end has background threads which periodically check certain things with the back end).
'Fill: SelectCommand.Connection property has not been initialized.'
The following is my code:
Code:
Public Function GetAndOpenConnection() As SqlConnection
Dim Conn As New SqlConnection("Data Source=" & DBstring & ";Database=**;User ID=**;Password=**")
While Conn.State = ConnectionState.Closed
Try
Conn.Open()
HaveConnection = True
Catch ex As Exception
HaveConnection = False
If MsgBox("The backend data source can be not be found. Retry?" & vbCrLf & "Cancel to exit application." & _
vbCrLf & "Message: " & ex.Message, MsgBoxStyle.OkCancel) = MsgBoxResult.Cancel Then
Application.Exit()
Exit Function
End If
End Try
End While
Return Conn
End Function
Public Function FillDataTable(ByVal strSQL As String, Optional ByVal NewDBConn As SqlConnection = Nothing) As Datatable
Dim DBConn As SqlConnection = GetAndOpenConnection()
Dim SqlDa As New SqlDataAdapter()
Dim dt As New Datatable
SqlDa.SelectCommand = New SqlCommand(strSQL, DBConn)
SqlDa.Fill(dt) 'ERROR is thrown here
dt.Sql = strSQL
SqlConnection.ClearPool(DBConn)
DBConn.Close()
Return dt
End FunctionIts a VS2008 project on .net 3.5, connected to an MSSQL express server on a networked machine.
TIA