Question

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How do I tell if a win32 application uses the .NET runtime

I have a file name, and I check this file exist in current directory, my problem is I want to know this file( the file is executable) is .Net exe or regular exe.

Answer 1

You could use the Assembly.LoadFrom method. This will throw an exception if the assembly is not a .NET assembly, or relies on a newer version of the framework. As long as you are using the latest version of the framework, the following sample will only return false when the path is not a .NET assembly.

public bool IsNetAssembly (string path)
{
    try
    {
         Assembly assembly = Assembly.LoadFrom(path);
         return true;
    }
    catch (BadImageFormatException e)
    {
         Console.WriteLine("This is either not a .NET assembly, or is " + 
                           "later than the current .NET framework");
         return false;
    }
}