Create Exe On Fly-普克计算机教程

Creating Exe on the Fly

Submitted By	User Level	Date of Submission
Kunal Cheda	Beginner	06/29/2001

This is probably the most wonderful this I have explored in .net. What happens here is a user can actually make the EXE file on the fly. System.Runtime.Emit Namespace provides necessay class to do this.
After compiling this file and running it on the Console a new file is generated in your folder called TestAsm.exe. This Exe file print's a message "Hello World" on the Console.

Source Code:

RuntimeEmit.cs
using System;
using System.Runtime;
using System.Runtime.Emit;
Class RuntimeEmit
{
public static void Main(String [] args)
{
         AppDomain ad = AppDomain.CurrentDomain;
         AssemblyName am = new AssemblyName();
         am.Name = "TestAsm";
        AssemblyBuilder ab = ad.DefineDynamicAssembly(am,AssemblyBuilderAccess.Save);
        ModuleBuilder mb = ab.DefineDynamicModule("testmod","TestAsm.exe");
        TypeBuilder tb = mb.DefineType("mytype",TypeAttributes.Public);
        MethodBuilder metb = tb.DefineMethod("hi",MethodAttributes.Public | MethodAttributes.Static,null,null);
        mb.SetEntryPoint(metb);
        ILGenerator il = metb.GetILGenerator();
        il.EmitWriteLine("Hello World");
        il.Emit(OpCodes.Ret);
        tb.CreateType();
        ab.Save("TestAsm.exe");
}
}

Save this file as RuntimeEmit.cs and Compile C:/>csc RuntimeEmit.cs and run this file C:\>RuntimeEmit
to run the Exe file generated C:\>TestAsm


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