Adding client confirmation to a GridView delete

Adding "OnClientClick='return confirm("Are you sure you want to delete this entry?");' " to the Template control works perfectly for me when using a LinkButton. When using an ImageButton, the confirmation window appears.  But when ever I choose OK to confirm the deletion, I keep getting the message:

"Invalid postback or callback argument.  Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page.  For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them.  If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation. "

Any ideas/suggestions are greatly appreciated. Thanks!

Hi,

dynamically i have created imagebuttons in gridview and added onClientClick event to the imagebutton, when i click on the particular page its redirecting to proper page. but when i click again on any imagebutton, the grid is getting empty without images its showing the grid. can anyone tell how to retain the dynamically created imagebutton when we click on the images more than once.

I was having problems with this as well (cancel didn't abort the delete); this microsoft link explains why - msdn.microsoft.com/.../ms972940.aspx - if your grid button is the command button delete type, it will not work.  it has to be converted to a template button for the onclick event to work as expected.

Great, if this is this simple why do other examples wasted like two days of my time. I felt like i achived smething. Thanks for your great and simple answer.

Wow, I thought this was going to take a day or two, involve javascript etc. You've sorted in five mins. I owe you big time.

Grimmy, i get the same error as you... no clue on how to fix it. I guess im going to use linkbuttons even if they look horrible...

You're the BEST

the easiest solution I've seen!!!

tnx a lot

It seems that OnClientClick and OnClick cannot both be assigned to an ImageButton and have it function properly. In this case, the page posts-back and the return value from the JavaScript is ignored.

I didn't want to use a templated control cos I also want to use

EnableSortingAndPagingCallbacks="true" and these two are incompatible.

this is my solution to trap the click event at gridview/table level and see if the event's source element is correct.

           var gridView = document.getElementById('<%=gvCompanies.ClientID%>');

           gridView.onclick = function(e) {

               var returnValue = true;

               var clickElement = (window.event) ? event.srcElement : e.target;

               if (clickElement.tagName.toString().toLowerCase() == 'a') {

                   if (clickElement.innerHTML.match(/delete/i)) {

                       returnValue = confirm('Delete?');

                   }

               }

               return returnValue;

           }