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.NET Forum / ASP.NET / General / April 2008ascx is ambiguous in the namespace ASP
I have a machine Windows Server 2003 using IIS 6.0 and I am getting the error BC30560 prjob_ascx is ambiguous in the namespace ASP I found a fix. Deleting all the files in the C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files Directory fixes the problem. Is there a way to prevent this problem. Thank you  SignatureJerry Are you sure you don't have the same ascx twice?. You should be able to overcome this, by in @Control directive of the UV, giving it ClassName="name" where name is something different than the name of your uc :-) SignatureTeemu Keiski AspInsider, ASP.NET MVP http://blogs.aspadvice.com/joteke http://teemukeiski.net >I have a machine Windows Server 2003 using IIS 6.0 and I am getting the >error [quoted text clipped - 8 lines] > > Thank you Hi Jerry, This error is usually reporting that there are some pages or usercontrols that have the same name in the generated assemblies since ASP.NET use a dynamic compilation model. For example, you may contains a usercontrol and a web page and they have the same name. http://forums.codecharge.com/posts.php?post_id=55779 As Teemu suggested, you can try renaming the ascx control mentioned in the error message to see whether that can eliminate the conflicting. Sincerely, Steven Cheng Microsoft MSDN Online Support Lead Delighting our customers is our #1 priority. We welcome your comments and suggestions about how we can improve the support we provide to you. Please feel free to let my manager know what you think of the level of service provided. You can send feedback directly to my manager at: msdnmg@microsoft.com. ================================================== Get notification to my posts through email? Please refer to http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#notif ications. Note: The MSDN Managed Newsgroup support offering is for non-urgent issues where an initial response from the community or a Microsoft Support Engineer within 1 business day is acceptable. Please note that each follow up response may take approximately 2 business days as the support professional working with you may need further investigation to reach the most efficient resolution. The offering is not appropriate for situations that require urgent, real-time or phone-based interactions or complex project analysis and dump analysis issues. Issues of this nature are best handled working with a dedicated Microsoft Support Engineer by contacting Microsoft Customer Support Services (CSS) at http://msdn.microsoft.com/subscriptions/support/default.aspx. ================================================== This posting is provided "AS IS" with no warranties, and confers no rights. -------------------- >From: =?Utf-8?B?SmVycnkgQw==?= <jerryed@nospam.nospam> >Subject: ascx is ambiguous in the namespace ASP >Date: Fri, 18 Apr 2008 11:11:02 -0700 >X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet > [quoted text clipped - 9 lines] > >Thank you Thank you for the replys. This error occours only once in a while. If I had duplicate files in the directory it would occur every time the site compiles. Also the file name is xxx_ascx The underbar is not used anywhere in my code for a name of a control or class. this seems to be a framework error. Also If there were duplicate names in my code I would have to remove them to get the code to compile. To fix this error I have to remove the temp files and then it will compile. So I do not think this is a error caused by duplicate file names. Also this problem only occurs on one of my servers. The other server used for coding and testing work OK. Remember this server can run for weeks before this occurs. The link talks about problems that ocur every time the code is compiled this is not the case here. Deleting the temp files clears the error and the code compiles and runs OK. Thank you SignatureJerry > Hi Jerry, > [quoted text clipped - 58 lines] > > > >Thank you sorry forgot to put in the page; http://channel9.msdn.com/ShowPost.aspx?PostID=160949 Thank you SignatureJerry > Hi Jerry, > [quoted text clipped - 58 lines] > > > >Thank you I tried the suggestion to put in a ClassName= in the <%@ Control section of the ascx file. This seemed to work. But when I deployed it then the next ascx file in the app had the error. so after several rounds of this I just put the ClassName in every ascx in the app and this worked. So how is it I can have about a 100 duplicate ascx and aspx files in the app and don't know it and not beable to find them. and why is only a problem in one server of 5 and why has this just now become a problem after three years ??? The control section and the class name of the code behind is created by the development environment if it needs the CLassName= then why does it not put it in. I think there is something else here and I think I need to know that is is. I don't want this to happen at the customers sites. Thank you, SignatureJerry > Hi Jerry, > [quoted text clipped - 58 lines] > > > >Thank you >I tried the suggestion to put in a ClassName= in the <%@ Control section >of [quoted text clipped - 84 lines] >> > >> >Thank you I have exactly the same problem. There are no identical names, nothing even close. It only happens when I change an ascx file. It will happen if I use F5. If I then use the Start Debugging arrow on the toolbar it will start and the next time not do this. I think it must have something to do with the temp files. LS Lloyd, See my last post. Put in the ClassName="classname" in the <%@ Control section of the ascx file and see if that works. This has been a problem for a while and now it seems to be getting worse must be some sort of update from microsoft. SignatureJerry > >I tried the suggestion to put in a ClassName= in the <%@ Control section > >of [quoted text clipped - 92 lines] > > LS > Lloyd, > [quoted text clipped - 119 lines] >> >> LS thanks I will check that out. LS Hi Jerry, As Teemu has mentioned, the duplicated name here may also be caused by two page/user control in differetn folder hierarchy that have the same file name. ASP.NET use dynamic compilation and will batch compile multiple page/ascx controls by default. When you haven't explicitly specify a ClassName( in the directive), if will generate dynamic class depend on file name. And if runtime try batch compiling two of such controls or pages, potential naming confliction occurs. The reason why the problem ocassionaly occurs is that batch compile is not always using the same strategy to group page or usercontrol together, for most time, the two problem items may not be compiled into the same assmebly, then no error will occur. Sincerely, Steven Cheng Microsoft MSDN Online Support Lead Delighting our customers is our #1 priority. We welcome your comments and suggestions about how we can improve the support we provide to you. Please feel free to let my manager know what you think of the level of service provided. You can send feedback directly to my manager at: msdnmg@microsoft.com. ================================================== Get notification to my posts through email? Please refer to http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#notif ications. ================================================== This posting is provided "AS IS" with no warranties, and confers no rights. -------------------- >From: =?Utf-8?B?SmVycnkgQw==?= <jerryed@nospam.nospam> >References: <C696C760-1DE5-4948-92B5-C662831BA1ED@microsoft.com> <tBGN8T2oIHA.9932@TK2MSFTNGHUB02.phx.gbl> >Subject: RE: ascx is ambiguous in the namespace ASP >Date: Mon, 21 Apr 2008 10:33:00 -0700 >I tried the suggestion to put in a ClassName= in the <%@ Control section of >the ascx file. This seemed to work. But when I deployed it then the next ascx [quoted text clipped - 37 lines] >> ================================================== >> Get notification to my posts through email? Please refer to http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#notif >> ications. >> [quoted text clipped - 31 lines] >> > >> >Thank you Here is another post about the temp dir. These users have the same problem. It is not duplicate files My understanding of what you mean by duplicate files is a two files aaabbb.ascx aaabbb.aspx I do not have this problem. The files in my app are in alpha order so it would be easy to see if it existed. There are no other directories in the app that contain that type of file. Thank you, SignatureJerry > I have a machine Windows Server 2003 using IIS 6.0 and I am getting the error > [quoted text clipped - 7 lines] > > Thank you Duplicate could also mean here that you have same ascx file in multiple subfolders. subfolder1\myuc.ascx subfolder2\myuc.ascx If ASP.NET thinks for some reason that they might end up in same assembly(for example pages in same directory, referencing UC's from different directories --> pages are compiled into same assembly), end result is that they would be ambiguous. In practise you woukldn't really duplicate UCs like this, without a good reason... I've seen this starting in ASP.NET 1.x and using ClassName attribute helps with no exception as it forces ASP.NET to compile the dynamic UC type with different name. SignatureTeemu Keiski AspInsider, ASP.NET MVP http://blogs.aspadvice.com/joteke http://teemukeiski.net > Here is another post about the temp dir. > These users have the same problem. It is not duplicate files [quoted text clipped - 20 lines] >> >> Thank you TeemU, Steven Thank you for your replys. So far the ClassName has worked. But, I do not have subfolders there are no duplicate names in page/control files in the application. I can search the directory structure and get only one hit per file name without the extention. This is some other problem. There are a lot of posts about this problem and everybody with the problem can't be mistaken about this. There are some theories about the compiler renaming the control xxxxx_ascx and also the class xxxxx_ascx and causing this problem, the ClassName solves this. Any way the ClassName solved the problem and I will put it in all controls I create. Thank you for your help SignatureJerry > Duplicate could also mean here that you have same ascx file in multiple > subfolders. [quoted text clipped - 36 lines] > >> > >> Thank you The problem is back: This time the ambiguous is now xxxxxx without the _ascx. I found another post: http://personalinertia.blogspot.com/2007/06/there-bug-in-compiler.html Notice the word BUG. I hope this works. Thank you SignatureJerry > I have a machine Windows Server 2003 using IIS 6.0 and I am getting the error > [quoted text clipped - 7 lines] > > Thank you Hi Jerry, Is it possible to repro the problem by a simple web project with page and usercontrol? If so, I would suggest you submit this problem to our connect site: http://connect.microsoft.com/feedback/default.aspx?SiteID=210 the dev engineer will try repro it if it is a definite problem. Sincerely, Steven Cheng Microsoft MSDN Online Support Lead Delighting our customers is our #1 priority. We welcome your comments and suggestions about how we can improve the support we provide to you. Please feel free to let my manager know what you think of the level of service provided. You can send feedback directly to my manager at: msdnmg@microsoft.com. ================================================== Get notification to my posts through email? Please refer to http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#notif ications. ================================================== This posting is provided "AS IS" with no warranties, and confers no rights. -------------------- >From: =?Utf-8?B?SmVycnkgQw==?= <jerryed@nospam.nospam> >References: <C696C760-1DE5-4948-92B5-C662831BA1ED@microsoft.com> >Subject: RE: ascx is ambiguous in the namespace ASP >Date: Thu, 24 Apr 2008 09:43:00 -0700 >The problem is back: >This time the ambiguous is now xxxxxx without the _ascx. [quoted text clipped - 17 lines] >> >> Thank you Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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