Run-time problems after converting VS2005 web site to web application project

I've been reading about Web App Projects and how they eliminate the need for _vti files from FrontPage Server Extensions so I thought give it a try converting. I've read lots of stuff on this in this forum and elsewhere and I've gotten my project to build without any errors but I get failures trying to run the app.

To give an idea, I have a public site for development at which resides in c:\inetpub\wwwroot\devmdw on a webserver running WinServer2003. I also have a copy of this on my desktop running WinXP at http://localhost/devmdw/default.asp (which is on my local c disk in inetpub\wwwroot\devmdw.

On my desktop, I created a new web app project I called ProjectDevTest. After quite a bit of fiddling and research, I got it to build without errors but cannot get it to run.

First, I notice that when I right-click on my "start page" in my root - default.asp - there is nothing in the context menu that allows me to set it as a start page. I know this page is classic ASP but in the web site version I could set this attribute for default.asp.

I have some .aspx code in this app so I thought I'd try going directly to it. So, first I tried this in my public site at

That is, in my web "site" project, I was able to set OutMaps/default.aspx page as the starting page, build and RUN to it directly. But in my web "application" project, I set it as the start page and got this:

Server Error in '/' Application.

Parser Error

Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately.

Parser Error Message: Could not load type '_Default'.

Source Error:

1    <%@ Page Language="vb"
2 Trace="true"
3 AutoEventWireup="false"
4 Inherits="_Default" Codebehind="Default.aspx.vb" %>
6 <%@ Register TagPrefix="uc1" TagName="PickCompany" src="~/OutMaps/PickCompany.ascx" %>
8 <%@ Register TagPrefix="uc2" TagName="PickStateCounty" src="~/OutMaps/PickStateCounty.ascx" %>
10 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "">
11 <html xmlns="" >
12 <head id="Head1" runat="server">
13 <title>Untitled Page</title>
14 </head>
15 <body>
16 <form id="form1" runat="server">
17 <div>
18 <uc1:PickCompany ID="setCompany" runat="server" />
19 </div>
21 <div>
22 <uc2:PickStateCounty ID="setStateCounty" runat="server" />
23 </div>
25 </form>
26 </body>
27 </html>
1    Partial Public Class _Default
2 Inherits System.Web.UI.Page
4 Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
6 End Sub
8 End Class

 I'd love to get past this problem and get on to some of the real coding issues I know I will be facing. Thanks in advance for having a look and reading this far.Smile


Line 1:  <%@ Page Language="vb"
Line 2: Trace="true"
Line 3: AutoEventWireup="false"

Source File: /OutMaps/Default.aspx    Line: 1

Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.210

Here is the source for this page (followed by the codebehind file):


6/26/2007 10:10:20 PM 1239 articles. 0 followers. Follow

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Why is it that a request for help can reside on the Microsoft Forums for years with no reply but with a group like experts exchange if 24 hours goes by with out a reply it is addressed by one of the forum moderators and directed to experts in that area.  Here it is a year and a quarter later, I am experiencing similar issues but no one has seen fit to address these issues!  I share the sentiment expressed above on needing to get past the migration issues and deealing with programming issues. 

E.R. Joell
8/4/2008 4:25:59 PM

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