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.NET Developer who is now exploring the world of react.


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As a VB.NET programmer i only really use C# for XNA and other projects when i don't have a say on the matter. Recently i have begun to think about making a full blooded transition to C# after having some great success with it (specifically in XNA) and its not because VB.NET doesn't cut it. It is great but C# is also fantastic in my opinion, as it took features from some of the more distinguished languages avaliable, C++, Java and Object Pascal to name a few. Feature wise they are perfect for me no issues at all so before making any sort of decision i thought i would do a bit of research. So i decided to take a look at the MSIL of two simple applications in C# and VB.NET.

After comparing the MSIL of both this is what i realised:
  • VB.NET contained 4 extra opcodes which were NOP (No Operation)
  • VB.NET generated two extra variables (types Int32[] and Bool)
  • VB.NET certainly used more OpCodes
The code was a simple for each loop like so:

        Dim intArr() As Integer = {1, 2, 3, 4}
        For Each i As Integer In intArr


        int[] intArr = {1,2,3,4};
        foreach (int i in intArr)

I am yet to test the execution speed of either application which will be one of my next tasks after a little more research. On a side note the C# code compiled was of size 5.0 kb and the VB.NET code compiled to 11.0 kb. I'll be sure to post more after i conduct some more research. Also note i am in no way trying to change peoples mind on what language to use, i don't believe the execution difference would be that noticeable anyway.

And here is another article which sort of explains the same thing as me but in a little more detail: VB.NET vs C#: Performance
posted on Wednesday, April 23, 2008 9:40 PM