Last post Dec 19, 2007 06:36 AM by brainbox
Dec 12, 2007 11:47 PM|brainbox|LINK
After installing ASP.NET 3.5 Ext, Design mode of page became corrupted: Instead of controls it shows error messages (Error Creating Control - ScriptManager1 Method not found: Boolean System.Web.UI.Design.ViewRendering.get_Visible(); Error Creating Control
- TextBox1 Method not found: Boolean System.Web.UI.Design.ViewRendering.get_Visible(); etc).
Also when debug is enabled my silverlightcontrol cause this errors:
Sys.InvalidOperationException: A control is already associated with the element.
Sys.ParameterCountException: Parameter count mismatch.
Dec 13, 2007 12:47 AMfirstname.lastname@example.org|LINK
ASP.NET 3.5 Controls already have Ajax Enabled Controls. So UR PAge must have one <ScriptManager > tag .
Dec 13, 2007 02:56 AM|brainbox|LINK
I've got one script manager on my page.. why do you think that i have more than one? Or may be you mix up the thread?
Dec 17, 2007 04:41 PM|SimonCal|LINK
Are you using one of the new ASP.NET 3.5 Extensions Preview Web Sites or Web Application Projects when you get these design-time errors, or are you attemtping to mix ASP.NET 3.5 Extensions into an older or existing project? Does the runtime work correctly?
Can you explian or provide a code snippet of the page you are using ?
Dec 18, 2007 04:50 AM|brainbox|LINK
I am using new ASP.NET 3.5 Extensions Preview Web Site
I've tested my solution on another computer with VS 2008 and ASP.NET 3.5 Extensions Preview installed. The design mode bug disappear
Dec 19, 2007 06:36 AM|brainbox|LINK
I find that the bug with design mode appears only if people use Beta 2 before...
Here is the link to microsoft feedback center where this issue was also posted: