public void GridSelectableRows()
{
var tmp = new Grid();
var column = new WebGrid.Columns.SystemColumn("column", SystemColumn.SelectColumn,
tmp) {Visibility = Visibility.Both};
tmp.MasterTable.Columns.Add(column);
tmp.ID = "wggrid";
tmp.DefaultVisibility = Visibility.Both;
tmp.RecordsPerRow = 2;
tmp.PagerType = PagerType.None;
tmp.Width = Unit.Pixel(1000);
Testpage.Controls.Add(tmp);
tmp.Mode = Mode.Grid;
tmp.DataSourceId = "Categories";
tmp.ConnectionString = ConnectionAccessOleDb;
tmp.SetSelectedRows = "1!3!5";
var sb = new StringBuilder();
var sw = new StringWriter(sb);
var gridwriter = new HtmlTextWriter(sw);
tmp.RenderControl(gridwriter);
Assert.Greater(tmp.MasterTable.Rows.Count, 0);
Assert.LessOrEqual(tmp.SystemMessage.Count, 1); // 15-day license key message
Assert.AreEqual(tmp.Mode, Mode.Grid);
Assert.AreEqual(tmp.GetGetSelectedRows().Length, 3);
}