Question : Getting a First Chance Exception when trying to add a record to access with VB.NET

Hello all! I am getting the following error in my Immediate window:

A first chance exception of type 'System.Data.OleDb.OleDbException' occurred in System.Data.dll
A first chance exception of type 'System.Data.OleDb.OleDbException' occurred in System.Data.dll
A first chance exception of type 'System.Data.OleDb.OleDbException' occurred in System.Data.dll
A first chance exception of type 'System.Data.OleDb.OleDbException' occurred in System.Data.dll
A first chance exception of type 'System.Data.OleDb.OleDbException' occurred in System.Data.dll
A first chance exception of type 'System.Data.OleDb.OleDbException' occurred in System.Data.dll

That's not repeated - I get the error 6 times every time i run the program.


My Code is as follows:

    Public Function AddToDB(ByRef Table As String, ByRef DBColumnName As String, ByVal ValueToWrite As String) As String

        Try

            Dim con As New OleDb.OleDbConnection
            Dim ds As New DataSet
            Dim da As OleDb.OleDbDataAdapter
            Dim sql As String
            Dim dsNewRow As DataRow
            Dim ex As OleDb.OleDbException




            con.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
              "Data Source=C:\saw.mdb;Jet OLEDB:Database Password=hello;"


            sql = "SELECT * FROM " & Table

            da = New OleDb.OleDbDataAdapter(sql, con)

            da.Fill(ds, Table)


            Dim cb As New OleDb.OleDbCommandBuilder(da)


            dsNewRow = ds.Tables(Table).NewRow()

            dsNewRow.Item("Date_Time") = DateTime.Now()
            dsNewRow.Item(DBColumnName) = ValueToWrite

            ds.Tables(Table).Rows.Add(dsNewRow)

            da.Update(ds, Table)


            con.Close()


            con = Nothing
            da = Nothing
            ds = Nothing
            dsNewRow = Nothing
            sql = Nothing
            da = Nothing

            AddToDB = ValueToWrite & ": Written to DB"

        Catch ex As Exception

            'Error Handeling
            AddToDB = "Database Write Error" & ex.ToString()

        End Try



The correct data is entered in the correct table every time, I just don't know why this error is being thrown. I have been searching for while on how to resolve this with no luck. Thanks!

Answer : Getting a First Chance Exception when trying to add a record to access with VB.NET

You're DataAdapter has no UpdateCommand, hence nothing to do when you call da.Update().