根据多个下拉列表的选择来控制Gridview。

I created a data base named as Ztv.mdf , table as tabl1 with [Name], [fullname], [Id],[dept]& also created a drop down list1 for dept.when the dept values selected by user from dropdown list1 the gridview shows the output.it works fine.But i want 1 more dropdown list for Name.my aim is that when user select values from both dropdownlist1 & dropdown list2 it contol the grid view.how can i do it? I created a data base named as Ztv.mdf , table