C# Dataadapter.Update not working for Insert Command - No Errors!

[mcasey0827]

I'm writing a little app to get data from a CSV file generated everyday by a vendor and insert it into a Table in our SQL Server database. I can get the data fine, and I can easily merge it with another dataset I pull from the existing table (which is exactly the same except for an Identity Column as PK).

When I call SqlDataAdapter.Update, no error is generated, but it makes no changes as well. I have one row present in the Database and can use DataAdapter.Update to delete it just fine. It just won't insert.

Please Help! Code below:

using (OleDbConnection cn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\MyPath\\;Extended Properties='text;HDR=Yes;FMT=Delimited'"))
            {
                string sql = "SELECT * from MyCSV.csv";
                OleDbDataAdapter csvRdr = new OleDbDataAdapter(sql, cn);
                DataSet ds = new DataSet();
 
                cn.Open();
 
                try
                {
 
                    csvRdr.Fill(ds, "Table");
                    cn.Close();
                    using (SqlConnection cnn = new SqlConnection("Data Source=DB;Initial Catalog=XX;User ID=usr;Password=pwd"))
                    {
                        string sql_2 = "Select * from DBTable";
                        SqlDataAdapter da = new SqlDataAdapter(sql_2, cnn);
                        SqlCommandBuilder cmdBuilder = new SqlCommandBuilder(da);
                        DataSet ds2 = new DataSet();
                        da.TableMappings.Add("DBTable", "Table");
                        Console.WriteLine(sql_2);
                        cnn.Open();
                        da.Fill(ds2, "Table");
                        ds2.Merge(ds.Tables["Table"]);
                        ds2.AcceptChanges();
//This works              ds2.Tables["Table"].Rows[0].Delete();
//Looks Fine              Console.Write(ds2.GetXml()); 
                        da.Update(ds2, "Table");
                        cnn.Close();
                    }
              }
       )

Thanks.

-Mike