Linda,

>Okay, that took care of that problem. Now I can't get the grid to load the invoice data. I am using mmDataGrid. The binding source is set to Invoice. There is only one invoice loaded right now. Could that cause a problem firing the code to load the dataset?
>
>Here's the code for selecting an invoice:
>
>

>        private void ddlInvoiceNo_SelectedIndexChanged(object sender, EventArgs e)
>        {
>            if (this.ddlInvoiceNo.SelectedText != "")
>                oInvoice.GetInvoiceByInvoiceNo(this.ddlInvoiceNo.SelectedText);
>            this.grdInvoice.Refresh();
>        }
>

If you set a breakpoint is this code firing in the SelectedIndexChanged method? Is the SelectedText what you expect? If it is, set a breakpoint in the MM .NET Framework class mmDataGridView.OnBindData() on this line of code:

mmBindingStrategyDataGrid.BindData(this, bindingSource, e);

You should then be able to trace through to see what's happening.

P.S. If you really meant you are using mmDataGrid, you should be using mmDataGridView instead...mmDataGrid is an old-style .NET 1.X grid.

Best Regards,