Requirement: Where Rows need to show Order wise Ascending or descending in code behind. e.g we are receiving a dataset from database and want to show records in ascending or Descending wise on basis of any column. So we will write the column name in sort order.

if (ds.Tables[0].Rows.Count > 0)
   {
    DataView dv = new DataView();
    dv = ds.Tables[0].DefaultView;
    dv.Sort = "  AdminMessageId Desc ";
    dlAdminMessage.DataSource = dv;
    dlAdminMessage.DataBind();
   }