call javascript from code behind

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Mike - 04 Oct 2007 15:27 GMT

Ok, here is my story. I took over a web site that is using the asp.net wizard. This wizard has buttons within it, now, on one of the steps in the wizard I have a drop down. Depending if 'Delete' is selected in the drop down, I need to show a message box to ask the user 'you sure you want to delete?" if they click 'OK' it deletes, if they click cancel it does nothing.

So within the button click event, how can I show an confirmation box only if 'Delete' is selected in the drop down?

so I need something like this

if (dd.selecteditem.text == "delete")
{
I need to show a confirmation box;
}

then call my delete method only if 'OK' is clicked in the confirmation box, if cancel then nothing happens.

any suggestions on how this can be done?

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David R. Longnecker - 04 Oct 2007 16:15 GMT

You could do something like this:

if (dd.selecteditem.text == "delete")
{

ClientScript.RegisterClientScriptBlock(this.GetType(), "DeletePopup", "<script>
confirm('Are you sure you want to delete?') </script>");

}

That'll pop up a JavaScript box with OK and Cancel as options and the text
can be programatically changed to include row information, etc.

HTH.

-dl

--
David R. Longnecker
http://blog.tiredstudent.com

> Ok, here is my story. I took over a web site that is using the asp.net
> wizard. This wizard has buttons within it, now, on one of the steps in
[quoted text clipped - 16 lines]
>
> any suggestions on how this can be done?

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Collin Chung - 04 Oct 2007 16:30 GMT

> Ok, here is my story. I took over a web site that is using the asp.net wizard. This wizard has buttons within it, now, on one of the steps in the wizard I have a drop down. Depending if 'Delete' is selected in the drop down, I need to show a message box to ask the user 'you sure you want to delete?" if they click 'OK' it deletes, if they click cancel it does nothing.
>
[quoted text clipped - 11 lines]
>
> any suggestions on how this can be done?

Hi Mike,

You'd want to use the OnClientClick property of the button, which
calls a javascript function..

<asp:Button ID="Button1" runat="server" OnClientClick="return
MyFunction()" Text="My Button" />

and in your javascript

function MyFunction() {
if (dd.selecteditem.text != "delete") return true;
return confirm("you sure you want to delete?");
}

Some docs with examples here:
http://msdn2.microsoft.com/en-us/library/system.web.ui.webcontrols.button.onclie
ntclick.aspx

--
Collin

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call javascript from code behind

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