Javascript using c#

[quinnipiac0807]

This should be a fairly easy question and I'm not sure why I can't get this to work. I have an asp:button on my page and a javascript function in the html. I need to call this funtion using c# on the btnCancel_Click() event. I'll show you the funtion and the code I'm using but for some reason it's not working.

Javascript funtion. (This works)
<script language="javascript">
function WhereTo()
{
location.href == history.back(-1);
}
</script>

I'm calling it using this line.
Response.Write("<script language=javascript>javascript:WhereTo()</script>");

For some reason this doesn't work. Any suggestions.

Thanks in advance.

 

[tgreer]

Try:

Response.Write("<script type='text/javascript'>WhereTo();</script>");

Thomas D. Greer

http://www.tgreer.com

Providing PostScript & PDF
Training, Development & Consulting

 

[quinnipiac0807]

I'm telling you it looks so easy, but when I use that line I get an error that says, "Object Expected". I'm confused.

 

[tgreer]

Ok. I use "Response.Write()" sometimes, too, and it works. Note that I added the semicolon after the function call. You did that, right?

Another mechanism is to use the Page.RegisterStartUpScript() method in you btnCancel_Click method.

So the first time you load the page, no script runs. The user clicks the cancel button, which registers a startup script. Then when the page returns, the script runs.

Try that instead of Reponse.Write(). If you still have problems, it's probably the JavaScript, not the C#.



Thomas D. Greer

http://www.tgreer.com

Providing PostScript & PDF
Training, Development & Consulting

 

[quinnipiac0807]

Great! Thanks so much. That made life a whole lot easier.

 

[tgreer]

I've started writing some articles on my site, with a section on ASP.NET client/server issues. If there's a topic you'd like covered, let me know.

<hint>If you visit the site, note that it's advertiser supported. Just like Tek-Tips.</hint>



Thomas D. Greer

http://www.tgreer.com

Providing PostScript & PDF
Training, Development & Consulting