I am using the Infragistics' Ultra webgrid. What i am trying to do is this: my grid has two levels. i have a checkbox in the header of each level,as well as on every row of the grid(using cell and header templates). when i check the checkbox located in the header of the second level, all the rows below the header must get checked i.e. the checkboxes of the rows below the header should get checked. Please advise. Thanks