Caveat: I decided to post it to Advanced since what I am trying to do is a
little ASP.NET black magic.
I have created a base ASP.NET class that derives from System.Web.UI.Page.
This class's job is to create a master page for all Pages in a particular
application. In this class I do the following:
- On it's OnInit() call, I gather all the controls for the
page's HtmlForm object and remove them from the HtmlForm's
Controls collection.
- I then load a specific UserControl that contains the master
page information.
- Lastly, I add all the controls that used to live in the
HtmlForm'ss Control's collection to a control within
the Master Page User Control.
All of this worked well until I ran into validators. Quick background on
client-side validation. When a page has validators, client scripts are
added to the page and ultimately called from a submit button on the page.
After generating a page, a typical button goes from:
<asp:Button id="Button1" runat="server" Text="Button"></asp:Button>
And makes it:
<input type="submit"
name="WebUserControl11:Button1"
value="Button"
onclick="if (typeof(Page_ClientValidate) == 'function')
Page_ClientValidate(); "
language="javascript"
id="WebUserControl11_Button1" />
The magic is the onclick event. This forces the page to validate. The
problem is that with my base page class this fixup when it renders the
button never happens. I've delved into a myriad of possible solutions and
have concluded the following information:
- Changing the time when the control fiddling happens
seems to have no affect.
- Embedding a form within another control (using a User
Control) does not make this happen.
- Commenting out the code that does the re-parenting of
the controls in my base class resolves the issue (but
obviously doesn't really fix it). Therefore the
subclassing of the Page class is not the issue.
What I am looking for is some insight to how the validator code fix-ups
happen. I am happy to reverse engineer the rendering to see when it happens
to find clues as how to get around the issue, but I haven't had any success
with Reflector yet. Anyone run into this or can give me an idea of where to
start to look about where the fixup rendering happens?
TIA
Thanks,
Shawn Wildermuth
[EMAIL PROTECTED]
Author of Pragmatic ADO.NET
http://adoguy.com/book
http://ONDotnet.com
Microsoft .NET MVP
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