title: Javascript alert() on server side
body: <p>I want to run a javascript alert popup inside a VB.net function. I have used something like this before, but I have only gotten it to work inside Page_Load or Page_Prerender. Is there something other than RegisterStartupScript that is used for my scenario?</p>
  
  <p>edit: I added more detail as to what my situation is.</p>
  
  <pre><code>Protected Sub btnSubmit_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnSubmit.Click
  
      blnEditComplete = RunEditChecks()
  
  End Sub
  
  
  Function RunEditChecks() as Boolean
  
      'edit checks 
      ...
      ...
      ...
  
      ScriptManager.RegisterStartupScript(Me.Page, Me.GetType, "warning", "alert('WARNING: Price must equal Contract Price.');", True)
  
      ...
      ...
      Return True
  
  End Function
  </code></pre>