There are some scenarios where need to check programmatically if the given file is a .NET assembly or not. How do we do that? One way is to use reflection and try to load that file (assembly). If the assembly gets loaded, and doesn’t throw any exception, then yes, it’s a valid .NET assembly. If it’s not a valid file, then it’ll throw a “BadImageFormatExcept... The idea of checking weather a file is assembly or not by loading it and checking if exception is thrown ......

Recently I was working on a utility very similar spy++, but could do more than what we have in spy++ - like besides getting me the window (not Windows :P) class name and its height/width etc, it could also give me the caption of the window. I read couple of articles and all suggested to use global hooks. Using hooks because we are doing all this stuff using mouse – a very similar UI experience like that of spy++ - you click on the bull’s eye icon and drag the mouse to the destination ......