DataGridView Binding with MYSQL Datatable, Where am i wrong??

  ON FORM LOAD  

  odbcDataAdapter = new OdbcDataAdapter(@"call Get_Designers(-1)", sqlConnection.Connection);

                dataTable = new DataTable();
                odbcDataAdapter.Fill(dataTable);

                //odbcDataAdapter.FillSchema(dataTable, SchemaType.Source);

                OdbcCommandBuilder commandBuilder = new OdbcCommandBuilder(odbcDataAdapter);

                BindingSource bSource = new BindingSource();
                bSource.DataSource = dataTable;
                dataGridView.DataSource = bSource;

                DesignerName.DataPropertyName = "designer_name";
                DesignerContact.DataPropertyName = "designer_contact";
                DesignerLastModified.DataPropertyName = "last_modified";
                DesignerDateCreated.DataPropertyName = "date_added";

  ON SAVE BUTTON CLICK //TRIGGERED AFTER CHANGES IN ONE OR MORE DATA ROW IN GRID

  OdbcCommand updateCmd = new OdbcCommand(@"call Set_Designer(@designer_id,@designer_name,@designer_contact)");
                updateCmd.Parameters.Add("@designer_id", OdbcType.Int, 11, "designer_id");
                updateCmd.Parameters.Add("@designer_name", OdbcType.VarChar, 255, "designer_name");
                updateCmd.Parameters.Add("@designer_contact", OdbcType.VarChar, 500, "designer_contact");
                odbcDataAdapter.UpdateCommand = updateCmd;

                odbcDataAdapter.Update(dataTable.GetChanges(DataRowState.Modified));

GIVES EXCEPTION
     
  System.Data.DBConcurrencyException: Concurrency violation: the UpdateCommand affected 0 of the expected 1 records.