Confirm Dialog not showing up

[Emir Prcic]

Hy,
I am having troubles to get a Radbutton working together with a javascript confirm dialog. The intention is, to show the confirm dialog prior to executing the delete command (which the radbutton represents). However, altough I am using the same Code, I already found in this forum, the button simply creates the postback, without even showing the dialog. The Code i use is:

<telerik:RadButton ID="BtnDelete" runat="server" OnClientClick="javascript:if(!confirm('This action will delete the selected customer. Are you sure?')){return false;}" Skin="Outlook" Text="Löschen" onclick="BtnDelete_Click">
</telerik:RadButton>

For testing purposes, I tried a default Button, which works without any troubles:

<asp:Button ID="Button1" runat="server" Text="Button" OnClientClick="return confirm('Are you sure to Continue?');" />

Does anybody have any suggestions what to do?

If it is from interest:
I am using the Controls in a Webpart for a Sharepoint 2010 environment.

[Pero]

Hi Emir,

I believe the following demo will help you achieve the desired scenario: http://demos.telerik.com/aspnet-ajax/button/examples/confirm/defaultcs.aspx.

All the best,
Pero
the Telerik team

[Emir Prcic]

I think I somehow found the solution

As shown here, it seems that I have to use the "OnClientClicking" event, together with defining the javascript as function in the <scripts> Section.

So this configuration of the radbutton

<telerik:RadButton ID="BtnDelete" runat="server" OnClientClicking="DeleteConfirm" Skin="Outlook" Text="Löschen" onclick="BtnDelete_Click">

together with the corresponding function

function DeleteConfirm(sender, args) {
    args.set_cancel(!window.confirm("Are you sure you want to delete the entry?"));
}

works!.

However, I usually like to know why. (using my former Javascript-Code in the "OnClientClicking"-event does not work). Im quite happy to have it working now, but if anybody is able to give me a short explanation, why I it did not work in the OnClientClick Event or without using a defined function,  that would be very appreciated.

Have a nice day

[Pero]

Hello Emir,

The Ajax controls (all of our controls from the RadControls for ASP.NET Ajax suite) expect an object of type function for their client-side events. That's why we set only the name of the function (without the parentheses)
to the RadButton.OnClientClicking property. You could also set an anonymous function in the following way:

<telerik:RadButton ID="BtnDelete" runat="server"
 OnClientClicking="function (sender, args){args.set_cancel(!window.confirm('Are you sure?'));}"
 Text="Löschen">
</telerik:RadButton>

Regards,
Pero
the Telerik team

[Manish]

Hi,

I did try with the given solution ( RadConfirm). I need it to show confirmation message after validation like RequiredField and some other. 
I search on the forum and many solutions are there but I was not able to do it correct way.

I did try with following from a different thread: 
var validated = Page_ClientValidate();
if (validated)
{
// Rad Confirm Code here.... 
}

It validates the form first, I have validation summary control on my form and now it is showing validation messages box twice.

*** To avoid this I set CausesValidation property to "false" of RadButton.

Now It works fine to me ...

Regards
Manish