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# How do I find my DLL's PublicKeyToken if the project / assembly was not strongly named?

Posted on 2011-09-12
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I'm having trouble with finding the PublicKeyToken of my project, created in VS 2010 ASP .NET 3.5 (C#). I've run some tools to find the publickeytoken but now i find out that the project / assembly was not strongly named. i didn't know i was goin to need to strongly name it. is there a way to strongly name it or is there a way to find the publickeytoken for it. It is causing my web.config to fail / error out.
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Question by:mikesExpertExchange
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käµfm³d   👽 earned 500 total points
If the assembly is not strongly named, then there is no public key token! You can create a new key file to sign the assembly. This won't be a key file in the sense of one attained from the likes of Verisign, et. al., but it will allow you to strongly name the file. You'll find the option to create a key file on the "Signing" tab of your project's properties:

Once you check the box, you can click the dropdown and there will be an option for "<New...>". If you select this, a new dialog will open which allows you to name the key file. You can optionally specify a password for that file as well:

Once you click "OK", your assembly should be strongly named at that point. You can use the Strong Name utility "sn.exe" to inspect the value of the public key token. Open a VS Command Prompt and enter the following command:

sn.exe -T C:\path\to\your\compiled.dll


The PKT should print to the console window.
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thank you
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Expert Comment

NP. Glad to help  = )
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