Converting IL to C# code

Question

I need to convert the IL to c# code. I have an assembly and I am reading this assembly. I get MethodBody from MethodInfo and the methodbody has a method GetILAsByteArraY() which returns a byte array now I want to convert this IL to C# code. Please help me out in solving this.

What do you need this for? If you describe your situation in somewhat more detail, maybe we can suggest more than .NET Reflector. — Anton Tykhyy, Mar 15 '09 at 16:14
@Anton We'd probably be better off not understanding this hackery. — BC., Mar 15 '09 at 16:15
ILSPy has the code in github https://github.com/icsharpcode/ILSpy and you can take what you like to use from it — Walter Verhoeven, May 20 '20 at 12:14

score 22 · Accepted Answer · answered Mar 15 '09 at 16:11

22

Don't reinvent the wheel; use Lutz Roeder's .NET Reflector.

answered Mar 15 '09 at 16:11

jason

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I think it is clearly obvious that he is trying to create another wheel like that of .NET Reflector and he wants to know how it's made. Lutz shouldn't necessarily be the only man in the world who knows how to make it. – Muhammad Hasan Khan Mar 15 '09 at 18:39
@HasanKhan given OP's choice of answer he is pretty happy with Lutz being the only man :) – nawfal Jun 30 '16 at 22:58

score 16 · Answer 2 · edited Nov 26 '20 at 21:04

16

The Lutz Roeder reflector was purchased and is no longer available for free download.

There is now a free (once again) tool called ILSpy. I've found it to be very good, and it will not only generate C# code from IL but will also create a .csproj project if decompiling an entire DLL assembly.

edited Nov 26 '20 at 21:04

vulcan raven

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answered Nov 21 '11 at 22:16

DuckMaestro

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Code for getting C# from assembly ? – Oct 03 '21 at 07:13

Javed S · Answer 3 · 2010-07-19T15:58:10.620

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Re-Inventing the wheel surely a better way to learn! you will have to create your own class that would convert iL to C#.This requires the knowledge of Intermediate language.

I assume you have already converted the Byte Array to IL instructions just like we see in ildasm.exe,Using Reflection.Emit.OpCodes,OpCode.OperandType,BitConvertor.ReadByte(),BitConvertor.ReadInt32 etc.

edited Jul 19 '10 at 15:58

answered Jul 19 '10 at 15:22

Javed S

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https://stackoverflow.com/questions/69423090/convert-il-to-c-sharp-programmatically This is my question, How can we get C# from IL ? – Oct 03 '21 at 08:02

Julien Roncaglia · Answer 4 · 2013-03-28T07:57:38.640

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If you want to do it yourself, you could start from the old Cecil.Decompiler and enhance it, see the source code and an old post of Jb. Evain announcing the project (Link down).

edited Mar 28 '13 at 07:57

answered Jul 19 '10 at 15:41

Julien Roncaglia

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Fixed the first one, can't do anything about the second one as I don't know why he put his blog offline even if he still reference it on twitter. – Julien Roncaglia Mar 28 '13 at 07:58

score 1 · Answer 5 · answered Mar 15 '09 at 16:11

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Let's see if I manage to get it in first: .NET Reflector! This really should be a FAQ...

answered Mar 15 '09 at 16:11

Pontus Gagge

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score 1 · Answer 6 · answered Mar 15 '09 at 16:11

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Can't you do this with Reflector?

You can load an assembly and view it as VB.net/C#/IL...

answered Mar 15 '09 at 16:11

Ward Werbrouck

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score 1 · Answer 7 · answered Nov 21 '11 at 21:56

For the search engine people, Reflector ain't free anymore. But a newer and better and not to mention FREE tool is being offered from telerik called JustDecompile. I just downloaded this and its so awesome and its just beta. Apparently telerik promises free forever.

score 0 · Answer 8 · answered May 29 '10 at 14:09

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Maybe you should try Dis# if you don't wanna re-invent the wheel... It's almost the best tool in converting the code NetDASM has a tool that lets you convert C# to IL. maybe you should take a look at that.

answered May 29 '10 at 14:09

Achilles

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score 0 · Answer 9 · answered Mar 15 '09 at 16:12

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You should just use .NET Reflector if you have the assembly. Also try the file gen addon.

answered Mar 15 '09 at 16:12

BC.

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score 0 · Answer 10 · answered Mar 15 '09 at 16:12

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There is no tool in the BCL that will do this; however, there is a great tool called Reflector, which you can write your own add-ins for. So you could probally use this to get the data you want.

answered Mar 15 '09 at 16:12

JoshBerke

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score 0 · Answer 11 · answered Mar 15 '09 at 16:12

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Reflector does this. Perhaps you could use Reflector against Reflector and learn how it handles the problem.

You might also say why you want to do this - there may be a better solution to your overall problem.

answered Mar 15 '09 at 16:12

John Saunders

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Reflectors internals were obfuscated using non-printables (at least lutz did that). While yes you could reflect on itself a better question would is it really worth that... – JoshBerke Mar 15 '09 at 16:14
Yes, that's what I suspected. It's why I asked him why he wants to do it. – John Saunders Mar 15 '09 at 16:53

score 0 · Answer 12 · answered Mar 15 '09 at 17:14

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Let me be the first to suggest you grab a copy of Red Gate's Reflector.

answered Mar 15 '09 at 17:14

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@ck Well, you answer a question and after hitting Submit fifty other people have already answered. O well... – Jul 19 '10 at 18:05

Converting IL to C# code

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