publish web website got compilor error CS0433 for master page

[ningjun.wang]

I crate a new asp.net 2.0 web site using Visual Studio 2005. It run
fine in visual studio. I then click Build Publish Website to build
the dll and copy them to the IIS virtual directory along with all the
..aspx files. I run the application in IIS and got the following error:

Compilation Error
Description: An error occurred during the compilation of a resource
required to service this request. Please review the following specific
error details and modify your source code appropriately.

Compiler Error Message: CS0433: The type 'MasterPage' exists in both
'c:\WINDOWS\Mic rosoft.NET\Fram ework\v2.0.5072 7\Temporary ASP.NET
Files\news\4088 04a4\6fb240fa\a ssembly\dl3\56c 26b89\5255fd02_ 8e1fc701\App_We b_448itj0s.DLL'
and 'c:\WINDOWS\Mic rosoft.NET\Fram ework\v2.0.5072 7\Temporary ASP.NET
Files\news\4088 04a4\6fb240fa\a ssembly\dl3\0e5 65373\78306203_ 8e1fc701\App_We b_hkd2czr6.DLL'

Source Error:

Line 110:
Line 111:
[System.Runtime. CompilerService s.CompilerGloba lScopeAttribute ()]
Line 112: public class masterpage_mast er : global::MasterP age {
Line 113:
Line 114: private System.Web.UI.I Template
@__Template_mai nContent;
Source File: c:\WINDOWS\Micr osoft.NET\Frame work\v2.0.50727 \Temporary
ASP.NET
Files\news\4088 04a4\6fb240fa\A pp_Web_masterpa ge.master.cdcab 7d2.nxp-zado.0.cs
Line: 112

Please advise

[Mark Fitzpatrick]

You may want to check and verify that you don't have two dlls that have the
definition for this class. That's one of the problems with using the web
site project, it compiles the files in a directory as needed and assigned
them some number to make them unique. Unfortunately, this will leave you
with two different dlls that contain the same exact namespace references,
which is probably what this is telling you about. This means you have to
ensure you delete the old dlls first. You may want to try the new Web
Application Project which is downloadable over at www.asp.net. It
precompiles the site into a single dll in the same fashion that VS 2003 did.
--

Hope this helps,
Mark Fitzpatrick
Former Microsoft FrontPage MVP 199?-2006

<ni**********@l exisnexis.comwr ote in message
news:11******** **************@ 80g2000cwy.goog legroups.com...

>I crate a new asp.net 2.0 web site using Visual Studio 2005. It run
fine in visual studio. I then click Build Publish Website to build
the dll and copy them to the IIS virtual directory along with all the
.aspx files. I run the application in IIS and got the following error:

Compilation Error
Description: An error occurred during the compilation of a resource
required to service this request. Please review the following specific
error details and modify your source code appropriately.

Compiler Error Message: CS0433: The type 'MasterPage' exists in both
'c:\WINDOWS\Mic rosoft.NET\Fram ework\v2.0.5072 7\Temporary ASP.NET
Files\news\4088 04a4\6fb240fa\a ssembly\dl3\56c 26b89\5255fd02_ 8e1fc701\App_We b_448itj0s.DLL'
and 'c:\WINDOWS\Mic rosoft.NET\Fram ework\v2.0.5072 7\Temporary ASP.NET
Files\news\4088 04a4\6fb240fa\a ssembly\dl3\0e5 65373\78306203_ 8e1fc701\App_We b_hkd2czr6.DLL'

Source Error:

Line 110:
Line 111:
[System.Runtime. CompilerService s.CompilerGloba lScopeAttribute ()]
Line 112: public class masterpage_mast er : global::MasterP age {
Line 113:
Line 114: private System.Web.UI.I Template
@__Template_mai nContent;
Source File: c:\WINDOWS\Micr osoft.NET\Frame work\v2.0.50727 \Temporary
ASP.NET
Files\news\4088 04a4\6fb240fa\A pp_Web_masterpa ge.master.cdcab 7d2.nxp-zado.0.cs
Line: 112

Please advise

[ningjun.wang]

Thanks for the help. I found the problem. I have backed up my
MasterPage.mast er as MasterPage_back up.master long time ago. As a
result, both files got compiled and they define exactly the same class.
I used to use Visual C++ 6.0 and it will generate a compilation error
when two source files define the same class. Visual Studio 2005 should
do a better hob to detecdt such error during compilation.

[Juan T. Llibre]

re:

Visual Studio 2005 should do a better hob to detecdt such error during compilation

Or, you could simply rename your backup files with the .bak extension.
That would solve the problem, too.

MasterPage.mast er.bak won't be compiled.

I often have *two* backup files for different versions.
I rename the older backup *.old. ( MasterPage.mast er.old , in this case ).

That way, I have references to previous configurations, while avoiding compilation errors.

Juan T. Llibre, asp.net MVP
asp.net faq : http://asp.net.do/faq/
foros de asp.net, en español : http://asp.net.do/foros/
=============== =============== =====
<ni**********@l exisnexis.comwr ote in message
news:11******** *************@t 46g2000cwa.goog legroups.com...

Thanks for the help. I found the problem. I have backed up my
MasterPage.mast er as MasterPage_back up.master long time ago. As a
result, both files got compiled and they define exactly the same class.
I used to use Visual C++ 6.0 and it will generate a compilation error
when two source files define the same class. Visual Studio 2005 should
do a better hob to detecdt such error during compilation.