Question

I have .aspx page . that Have the GridviewChild within another gridviewParent. My GridviewChild has Columns with some controls, out of which it has DropDown controls. I want to fill the Data in dropdowns

GridViewParent
           GridViewChild
                     Columns
                        DropDownControl

This is hierarchy that I want to explain. On which event of which Grid I can do fillDropDown? Also how to get selected value (Which Events)? If possible send me code in C#

Answer 1

You can use RowDataBound event of the GridViewChild control to fill the drop down lists.
To get the selected value of a drop down list u can say something like this:

DropDownList ddl = GridViewParent.GridViewChild.Rows[someRowIndex].Cells[someCellIndex].FindControl("DropDownlist1") as DropDownList;
string v = ddl.SelectedItem.Text;

I hope that was beneficial to u.