Question

I’m showing a modal dialog via ‘window.showModalDialog(…’ which happens in a vbscript function (the page shown is aspx). I’d like to do some resizing of the window based on the number of rows in a datatable that’s coming back. So naturally I go to register a startup script that resizes the window based on the number of rows. Well, that didn’t work, so I tried to register a script that just showed a msgbox.

The code looks like (in the OnLoad event handler):

 if (!this.ClientScript.IsStartupScriptRegistered(typeof(MyPageClassName), 'hello'))         {             this.ClientScript.RegisterStartupScript(typeof(MyPageClassName), 'hello',                     @'<script language=vbscript>                         sub fnWindowOnLoad()                             MsgBox ''hello''                         end sub                         <script>', false);         }         if (!this.ClientScript.IsStartupScriptRegistered(typeof(MyPageClassName), 'hello'))         {             throw new Exception('Failed to load script');         } 

To me it looks like this should work and show a message box that says ‘hello’ when the page loads (I’ve got the window’s onload event set to fnWindowOnLoad). But what happens is nothing, no exception, no alert. I’ve tried every Type I could think of in the typeof call. Nothing seems to work. The only thing I can think of is that since the dialog is a modal ClientScript.RegisterStartupScript won’t run properly. But that doesn’t make any sense to me.

I put the MsgBox ‘hello’ call into my script block directly and the alert showed, so it’s possible. But I need to modify some arguments in the code behind so I have to use RegisterStartupScript as far as I can tell.

Answer 1

The solution for this was to have a script that read a value out of a hidden field and then resized the dialog. The value was set on the Page_Load. Using RegisterStartupScript never seemed to work, neither did RegisterClientScript, so I’m pretty sure modal dialog and RegisterXxx don’t get along. Need to use window.dialogHeight & window.dialogWidth in the vbscript.