void SearchResultGrid_DoubleClick(object sender, EventArgs e)
{
//Pass selected part number on
int y = SearchResultGrid.Rows.IndexOf(SearchResultGrid.SelectedRows[0]);
_PartNumber = SearchResultGrid["PartNum", y].Value.ToString();
_Description = SearchResultGrid["PartDescription", y].Value.ToString();
DialogResult = DialogResult.OK;
this.Close();
}