Long story short – you can use SuppressIldasmAttribute attribute. However, please note that it won’t prevent decompilers (such as .NET Reflector, ILSpy or JustDecompile) from reverse engineering your code.
Here are the details:
What is IL?
Intermediate Language (IL) is CPU-independent instructions and any managed (.NET) code is compiled into IL during compile time. This IL code then compiles into CPU-specific code during runtime, mostly by Just InTime (JIT) compiler.
What is ILDASM?
ILDASM is a tool installed by Visual Studio or .NET SDK and it takes a managed DLL or EXE and produces the IL code which is human readeble clear text.
How to get IL code from an assembly
For example, consider the following code:
using System;
using System.Text;
namespace HelloWorld
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Hello world...");
}
}
}
Put this code in a console project and build it, you will have an EXE file.
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