I think I'm having a similar issue. I have a DataGridView that is bound to a Strongly Typed Dataset. The dataset is a simple Single Table collection of records. I GetData() to fill the dataset, but when I try to Add a new row
Dim
thisDataGrid As DataGridView = RevisionEntities.PkgGrouper.Controls.Item("PackagesDataGridView")
Dim thisDataRow As Integer = thisDataGrid.Rows.Add()
I get an error stating "System.InvalidOperationException: Rows cannot be programmatically added to the DataGridView's rows collection when the control is data-bound"