Its working fine.
But, I got one more issue.
I am using the detailstable instead of NestedViewTemplate.
Here,when I clicked on Expand/Collapse button of radgrid, uploaded the file and I just want to rebind the nested grid with the newly added file.
But, I am not able to get it.(Actually it is updated in DB and the child grid is not rebinded to get the new file).
Its working fine once i navigated to mastergrid and then this nested grid.
I wrote in PreRender event as
protected void RadGrdFilesPro_PreRender(object sender, EventArgs e)
If i dint write rebind() in !Postback(), i am unable Exp/collapse button is not working.
Any alternative to fix this issue please.