I'm reporting this error when I try to execute in debug the application:
The application you are trying to debug uses a version of the Microsoft .NET Framework that is not supported by the debugger.
The debugger has made an incorrect assumption about the Microsoft .NET Framework version your application is going to use.
The Microsoft .NET Framework version specified by you for debugging is incorrect.
I'm using Visual Studio 2008 and .NET Framework 3.5.
I've got this problem with a particular project. Another project with the same framework and visual studio version works perfectly.
This suggests me that this is a problem of the project.
Any idea of why? Which property to set?
Thank you very much
Check to ensure that the application pool you are running the site under is set for the correct .Net runtime version. In IIS you can set that up in IIS Manager site configuration. With IISExpress you just need to modify the applicationhost.config file to set the site to use the correct app pool, or configure the app pool to use the proper version.
Related
I have one web application in C# which is developed using Visual Studio 2010 and I want to convert or Migrate that web application in Visual Studio 2013 (C#).
Note:- Below listed things I used in my current Web Application using VS2010 (C#)
Asp.Net Server Controls.
ClassLibrary (.dll).
Web services.
Above Listed things I used in my current Web application which is in VS2010.
Now, My Question Is- What would be the major changes I would be facing if I am using all above listed Microsoft Technologies using C# and Migrate it to VS2013.
The biggest change for us was that Visual Studio Setup Project was depreciated in VS 2012, so we had to build new installers.
http://blogs.msdn.com/b/visualstudio/archive/2013/08/15/what-s-new-in-visual-studio-2013-and-installshield-limited-edition.aspx
Also, which version of .NET is you application? Keep in mind framework targeting for Visual Studios (basically if your application is .NET 3.5 SP 1 or newer you should be fine):
https://msdn.microsoft.com/en-us/vstudio/dn250998.aspx
The Web Services should also be okay, if you intend to keep creating web services instead of switching to WCF, you may want to look at this:
Create a asmx web service in C# using visual studio 2013
The thing we first noticed is VS2013 uses IIS Express 8.0, at the time our production web server was IIS 6 - we encountered, on numerous occasions a web.config setting working fine locally but forgot to add the IIS 6 equivalent.
For our web apps we kept targeting the same .Net framework and I can't recall any issues. For your reference our stack was Asp.Net MVC 4, EF 5 WebApi plus numerous NuGet packages. So we didn't have any asp.net server controls.
You may also want to ensure all your VS2010 plugins have a 2013 equivalent.
You shouldn't have any problem at all with the types of proyects you are using.
You could even open the solution with VS2013 and then open it back with VS2010 SP1 without any problem (as long as you don't switch the .NET framework to 4.5).
Starting from VS2012, Microsoft made changes to allow developers open a solution with older versions of VS (VS2010 SP1 being the oldest version that supports this). There ARE some proyect types that won't be compatible, but from the things you listed, you won't have any problems.
When you open the Solution with newest VS, it WILL make some changes, but you still will be able to open it with VS2010 SP1 (again, with some exceptions).
https://msdn.microsoft.com/en-us/library/hh266747.aspx
http://blogs.msdn.com/b/webdev/archive/2012/08/22/visual-studio-project-compatability-and-visualstudioversion.aspx
Anyway, my suggestion is, install VS2013 in a test machine and try it out. You can even create an Azure VM with VS2013 PreInstalled in minutes to try it out.
There is already available VS2015 preview, why not wait until it is released? (or use the preview)
https://www.visualstudio.com/en-us/downloads/visual-studio-2015-downloads-vs.aspx
as other said, it should not brake much
I am using Visual Studio 2012. I have been developing on a legacy web site that uses .NET 2.0. It is configured on my local machine using IIS with an application pool set for .NET 2.0. I am able to open this web site from Visual Studio using File-Open-Web Site....no problem. This is a web site, not a compiled web application.
I just changed my application pool to .NET 4.0. My web site runs fine.
However, when I select File-Open-Web Site in Visual Studio, I get an error that says:
The site "...." is currently configured for use with a newer version of ASP.NET (4.0). This project is targeting ASP.NET 2.0; if not configured some features with the tool may not render correctly. Would you like the site to be configured for user with ASP.NET 2.0?
I can click "No" and attach to and debug the application no problem.
I have no SLN, SUO, CSPROJ, or USER files anywhere in the web site or in My Documents. I have deleted the contents of my web.config file so that it is empty. I still continue to get this message every time I open the web site.
Where is this message coming from?
Why does Visual Studio think that the web site is configured for .NET 2.0?
This is something local to my machine.
Other developers in the company have upgraded their application pool to 4.0 and do not see this message when opening the web site from Visual Studio.
While you may have upgraded your solution to be opened by Visual Studio 2012, you haven't changed the targeted .NET runtime.
To target something other then the .NET 2.0 runtime you need to change the target in the project properties.
See the following for a complete explanation.
I'm trying to debug a problem which shows up under IIS7 using an application pool configured for .NET 4. My Visual Studio ASP.NET Development Server says it is using 2.0.50727.5456.
I'd like to debug this out of VS so I'd like the .NET versions to match. I've found info on setting ports but there was no version setting nearby. And I couldn't find anything under the the Website.ASP Configuration menu item in VS either.
Is there any way to configure the ASP.NET Development Server's .NET version?
Check the targetFramework attribute of your compilation element in your web.config. If it's missing, add the attribute, and try setting it to 4.0.
If you're using a web application project (not a web site), try checking the project settings and look for Target Framework.
A better solution would be to make sure you have installed VS 2010 SP1, then install IIS Express which is a stand-alone version of IIS used for development. This uses the exact same code as is in the full IIS, this way your environment is the same.
http://learn.iis.net/page.aspx/868/iis-express-overview/
I'm trying to migrate an ASP.NET 2.0 app (WebForms) to ASP.NET 3.5. I've finally fixed a 500.19 IIS 7.5 error I was having. Now it will run, so long as I don't attempt to debug it. If I do attempt to debug it I get an error message. I've searched for help on this error and there's precious little out there. Here's the text of the error message:
Unable to start debugging on the web server. Check for one of the following.
The application you are trying to debug uses a version of the Microsoft .NET Framework that is not supported by the debugger.
The debugger has made an incorrect assumption about the Microsoft .NET Framework version your application is going to use.
The Microsoft .NET Framework version specified by you for debugging is incorrect.
Please see the Visual Studio .NET debugger documentation for correctly specifying the Microsoft .NET Framework version your application is going to use for debugging.
Well, as far as I know, I'm using the correct version of the .NET Framework (3.5) for this app. Although I am not as familiar with IIS 7.5 on Windows 7.
I found that I had to get into IIS and change the application pool that my upgraded ASP.NET app was using. It had been assigned to an application pool that's associated with .NET 4.0. I changed it to one related to .NET Framework 2.0.
I'm getting the following error when I attempt to debug a web site I've created with Visual Studio 8, and ASP.NET 3.5 Framework.
Anyone know how I can fix this issue?
Thanks,
Greg
...
Auto-attach to process '[8036] aspnet_wp.exe' on machine 'S418-B-XA2A' failed. Check for one of the following.
The application you are trying to debug uses a version of the Microsoft .NET Framework that is not supported by the debugger.
The debugger has made an incorrect assumption about the Microsoft .NET Framework version your application is going to use.
The Microsoft .NET Framework version specified by you for debugging is incorrect.
Please see the Visual Studio .NET debugger documentation for correctly specifying the Microsoft .NET Framework version your application is going to use for debugging.
I think your IDE is defaulting to a different .NET framework version, you need to set it properly in the debugger, see for example : http://msdn.microsoft.com/en-us/library/ms241897(v=VS.90).aspx