I have a page with two unbound grids which are populated in the code-behind using custom Linq operations. In one of the grids the AddNewRow button visible plus I have a pop-up menu where you can choose to copy a row and insert this copy directly as a new row. I have a single method called "WebGrid_OnAddRow" which is called via the OnAddRow property of the grid on both ocations. It works fine when I use the AddNew button to add an empty row (as it does by default), but if I choose the "copy" function from the pop-up menu, the AddRow event seems to fire twice!

I've debugged the code and it is very weird: the Page_Load method is hit twice and the WebGrid_OnAddRow is too, and it is not always in the same order! I've checked that there is no databinding to the grids in the Page_Load, because I thought this could trigger the double AddRow event, but this was not the case.

If I set the OnAddRowBatch property to handle the AddRow event instead, the function from the pop-up menu works great, but I do not want to use this implementation as the AddNew button doesn't do a post-back and I therefore have to click another button to make the AddNew button take effect (unless of course, I can get the AddNew button to do a post-back?).

Can anyone point me in the right direction of what to look for or do you have any other ideas?