Question

I have put the following method in my master page. It works when I call it on a full post back, but when I call it from a updatePanel’s asyncPostBack no alert is shown.

    public void ShowAlertMessage(String message)
    {
        string alertScript = 
            String.Format("alert('{0}');", message);
        Page.ClientScript.RegisterStartupScript(this.GetType(), "Key", alertScript, true);
    }

What do I need to do so it works on partial post backs?

Answer 1

You have to register the script with the ScriptManager:

ScriptManager.RegisterStartupScript(this, typeof(Page), UniqueID, "alert('hi')", true);

Here is some more information:

Inline Script inside an ASP.NET AJAX UpdatePanel