Can we decompile a C# dll to VB.NET

Question

I have developed a dll in C#.net. Can we decompile the same in VB.net. If yes, how to do that?

Answer 1

Use a tool like Reflector to convert a compiled C# assembly (IL) into decompiled VB.NET source code (might lose some meaning with certain variable names). Another post mentions some free alternatives to Reflector.

Or convert the C# code using an online resource such as this one (1 code file at a time though).

Answer 2

I agree with Mitch, but as a free alternative to Reflector:

• ILSpy
• dotPeek

Answer 3

Assuming you have the source, you can use sharpdevelop to convert whole solutions back and forth between c#.net and vb.net

The same group also developed a plugin for visual studio: Code Converter C# to/from VB.NET

Answer 4

Sometimes C# cannot be converted (or decompiled) into VB.Net because there are some elements of C# that have no equivalent in VB. Eg iterators ( yield ) and unsafe code. Furthermore some of the free converters fail badly even when there are direct equivalents.

Why do you want to do this anyway? It's probably easy to just use the C# DLL from VB.Net code: you can call it, you can inherit from it. " CLS compliance " will help with this.

For what it's worth, it's also true that there are some elements of VB that have no equivalent in C#, eg exception filters.

Answer 5

If you've developed it your self I assume you have access to the source? If so you can just convert it all though here:

http://www.developerfusion.com/tools/convert/csharp-to-vb/