Jun 28, 2011 04:50 AM|Mamba Dai - MSFT|LINK
This error occured is not due to mix C# and VB in a Web site.
Parser Error Message: Could not load type '_success'.
I think you need to comfirm if the class name in the .aspx.vb file is the same as value of Inherits in .aspx file.
"Could not load type '_success'", your
Partial Class _success
code behind should be like this: