C#

protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)
        {
//So somehow you get your datatable:
//In C# it would look like:
DataView cv = yourDataTable.DefaultView;
cv.Sort = e.SortExpression;

if you want to add the sort direction you have to do a little more work
if (e.SortDirection == SortDirection.Ascending)
{
  cv.Sort += " ASC";
}
else
{
  cv.Sort += " DESC";
}

yourgridview.Datasource = dv;
yourgridview.DataBind();
}

ceejeeb wrote:

commands together in a sub context menu

System.Windows.Forms.MenuItem[] menuitems = new MenuItem[2];
System.Windows.Forms.MenuItem[] subitems = new MenuItem[2];

subitems[0] = new MenuItem("sub1");
subitems[1] = new MenuItem("sub2");

menuitems[0] = new MenuItem("Sub", subitems);
menuitems[1] = new MenuItem("Main");

ContextMenu cm = new ContextMenu(menuitems);