.net framework

Question

I am facing a strange problem in one of our system. The system.data.dll is 0 kb in C:\Windows\Microsoft.NET\Framework\v2.0.50727 folder. The system is running windows 7 and is a 64 bit machine. When I try to connect to database[sql server 2005] it gaives me the error:

System.BadImageFormatException: could not load file or assembly System.data.

I am clueless. How can the dll be of 0kb. Moreover If I try to rename or delete the 0kb system.data.dll it won't let me do so.[Access Denied.]

Answer 1

go to windows explorer exe in system director. Right click and click on "Run as administrator". select you file from newly opened windows explorer and delete it. By default windows 7 does not allow you to do so. But i strongly recommend no to do this. Alternative for that  is re-run your .net setup with proper access rights (may be with admin acess if possible).

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Regards, Ashwin. Shetty

Answer 2

Do not look for your System.dll in C:\Windows\Microsoft.NET\Framework\v2.0.50727 folder. Though properties window shows System.dll is referenced from this path, at runtime, the DLL is actually refernced from C:\Windows\Microsoft.NET\Assembly\GAC_MSIL\System\<version>\ folder.

Then coming to your BadImageFormat exception, it should be coming from some other DLL. I guess, one of your DLL is a 32Bit DLL which cannot run under 64 bit process. To solve the issue build your project in x86 mode (you can do that in project properties window).

I hope this helps.

 

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Please mark this post as answer if it solved your problem. Happy Programming!

Answer 3

Hello Sanjay,

Any updates on this?

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Please mark this post as answer if it solved your problem. Happy Programming!

Answer 4

Hi,

I noticed that there is a remarkable difference in the size of C:\Windows\Microsoft.NET\Framework\v2.0.50727 folder. In the machine where the exception occurs its 64 mb[291 files and 37 folder] while on other machine where no exception occurs its 160 mb[558 files 48 folders]. Can there be any chance that the os was not installed properly. and since framework is a part of the os in windows 7 I think I have to format the system and reinstall the OS.

BTW whats the size of C:\Windows\Microsoft.NET\Framework\v2.0.50727 folder in fresh machine.?

 

Answer 5

You need not re-install OS. Just install .net framework. You can download .NET Framework V2.0 from here.

I hope this helps.

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Please mark this post as answer if it solved your problem. Happy Programming!

Answer 6

I think you can't install .net framework separately. Its a part of the operating system.

Answer 7

Try it

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Please mark this post as answer if it solved your problem. Happy Programming!

Answer 8

You cannot install .net framework in windows 7.

Answer 9

Yes, it is a part of Windows OS. You can follow steps in the link below to repair it:

http://blogs.msdn.com/b/astebner/archive/2007/03/26/how-to-repair-the-net-framework-2-0-and-3-0-on-windows-vista.aspx

I hope this can help you.

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Paul Zhou [MSFT]
MSDN Community Support | Feedback to us

Answer 10

Dear All,

Ultimately I had to format and install the OS again. And now I am not facing any problem. BTW thanks you all for sharing your thoughts.