troubleshooting Question

How to trouble shoot SQL connection to a Database

Avatar of cmdolcet
cmdolcetFlag for United States of America asked on
Visual Basic.NETSQLDatabases
3 Comments2 Solutions21 ViewsLast Modified:
I am having issues with opening up a sql database. I added in a try catch statement to catch the issue and it does go into the catch block but my error is generic. Is there anyway to get a specific error to catch?
Public Sub SQLConnection()
        Dim cnn As SqlConnection
        Dim connetionString As String
        Dim SQLCom As SqlCommand
        connetionString = "Data Source=some_database;Initial Catalog=some_catalog;User ID=username;Password=password"
        cnn = New SqlConnection(connetionString)
        Try
            Dim myCommand As New SqlCommand("dbo.usp_get_vehicle_data_LMI", cnn)
            ' MsgBox("Command Setup ")
            myCommand.CommandType = CommandType.StoredProcedure
            'MsgBox("Command Type Setup")
            'myCommand.Parameters.Add(New SqlParameter("VIN", "xxxxxxxxxxxxxxxxxx"))
            ' Dim ValReturn As String = myCommand.ExecuteScalar
            'Label1.Text = ValReturn
            'Makes the call to the procedure to compare the scanned VIN with the Database Store Procedure.
            myCommand.Parameters.Add(New SqlParameter("VIN", _strSerialStringInput))
            cnn.Open()
            Using sdr As SqlDataReader = myCommand.ExecuteReader()
                sdr.Read()
                _VIN = sdr("VIN").ToString()
                _body_number = sdr("body_number").ToString
                _eim_code = sdr("eim_code").ToString()
                _pp30 = sdr("pp30").ToString()
            End Using
            cnn.Close()
        Catch ex As Exception
            _TListener.AddMethodError(ex)
            MessageBox.Show("Connection to SQL Dstabase was not established. Please Check Data Stored Procedure calls.")
        End Try
    End Sub

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