Question

I’m trying to do the simplest thing, to show an alert popup through javascript from my code-behind of a user control (ascx.cs).

I’ve tried

protected void btnSave_Click(object sender, EventArgs e) {     ScriptManager.RegisterStartupScript(btnSave, GetType(), 'uniqueID', 'alert('hello');', true); } 

as well as

Page.ClientScript.RegisterStartupScript(GetType(), 'uniqueID', 'alert('hello');', true); 

but nothing seems to work for me. The control is located within an RadAjaxPanel (telerik) in an ASPX page.

I’m missing something obvious here. Any ideas what?

EDIT: The javascript is not injected into the html source as far as I can see. I look for the ID and the actual alert statement in the html.

Answer 1

Ah, the problem was the Telerik RadAjaxPanel. I just had to set the EnableOutsideScripts to true on them, like so:

<telerik:RadAjaxPanel ID='ajaxpanel' runat='server' LoadingPanelID='ajaxLoadingPanel' EnableOutsideScripts='true'> 

And then I could use the following code:

ScriptManager.RegisterStartupScript(btnSave, GetType(), 'uniqueID', 'alert('hello');', true);