C#代码执行者1.0

动态生成代码程序收集NO1：

using  System;
using  System.Collections.Generic;
using  System.Reflection;
using  System.Text;
using  System.CodeDom;
using  System.CodeDom.Compiler;

 

namespace  csrepl {
     class  Program {

 

         static   string  funcprefix  =   " using System;  "
             +   " public delegate void Proc();  "
             +   " public class Wrapper {   "
             +   "   public static object Set(string name, object value) {   "
             +   "     AppDomain.CurrentDomain.SetData(name, value);  "
             +   "     return value;   "
             +   "   }  "
             +   "   public static object Get(string name) {   "
             +   "     return AppDomain.CurrentDomain.GetData(name);  "
             +   "   }  "
             +   "   public static object Invoke(Proc proc) {   "
             +   "     proc();  "
             +   "     return null;   "
             +   "   }  "
             +   "   public static object Eval() { return   " ;
         static   string  funcsuffix  =   " ;  } } " ;

 


         static   string  StringEval( string  expr) {
             string  program  =  funcprefix  +  expr  +  funcsuffix;

 

            ICodeCompiler compiler  =  CodeDomProvider.CreateProvider( " C# " ).CreateCompiler();
            CompilerParameters cp  =   new  CompilerParameters();
            cp.GenerateExecutable  =   false ;
            cp.GenerateInMemory  =   true ;

 

            CompilerResults results  =  compiler.CompileAssemblyFromSource(cp, program);
             if  (results.Errors.HasErrors) {
                 if  (results.Errors[ 0 ].ErrorNumber  ==   " CS0029 " )
                     return  StringEval( " Invoke(delegate {  "   +  expr  +   " ; }) " );
                 return  results.Errors[ 0 ].ErrorText;
            }
             else  {
                Assembly assm  =  results.CompiledAssembly;
                Type target  =  assm.GetType( " Wrapper " );
                MethodInfo method  =  target.GetMethod( " Eval " );
                 object  result  =  method.Invoke( null ,  null );
                 return  result  ==   null   ?   null  : result.ToString();
            }
        }

 

         static   void  Main( string [] args) {

 

             while  ( true  ) {
                Console.Write( " >  " );
                Console.Out.Flush();
                 string  expr  =  Console.ReadLine();
                 if  (expr  ==   null )
                     break ;
                 try  {
                     string  result  =  StringEval(expr);
                    Console.WriteLine(result);
                }
                 catch  (TargetInvocationException ex) {
                    Console.WriteLine(ex.InnerException.GetType().Name  +   " :  "   +  ex.InnerException.Message);
                }
                 catch  (Exception ex) {
                    Console.WriteLine(ex.GetType().Name  +   " :  "   +  ex.Message);
                }
            }

        }
    }
}

代码2：

private   void  Compiler( string  code)
        {
            CompilerParameters vCompilerParameters  =   new  CompilerParameters();
            vCompilerParameters.GenerateExecutable  =   false ;
            vCompilerParameters.GenerateInMemory  =   true ;
            vCompilerParameters.ReferencedAssemblies.Add( " System.Windows.Forms.dll " );
             string  vSource  =
                 " using System.Windows.Forms;\n "   +
                 " public class Temp\n "   +
                 " {\n "   +
                 "     public void Test()\n "   +
                 "     {\n "   +
                 "           "   +  code  +   " \n "   +
                 "     }\n "   +
                 " }\n " ;
            CompilerResults vCompilerResults  =
                CodeDomProvider.CreateProvider( " CSharp " ).CompileAssemblyFromSource(vCompilerParameters, vSource);

            Assembly vAssembly  =  vCompilerResults.CompiledAssembly;
             object  vTemp  =  vAssembly.CreateInstance( " Temp " );
            MethodInfo vTest  =  vTemp.GetType().GetMethod( " Test " );
            vTest.Invoke(vTemp,  null );
        }

 

string  code  =   " int sum = 0;\nfor(int i = 0; i < 100; i++)\n{\nsum += i;\n}\nMessageBox.Show(sum.ToString()); " ;
            Compiler(code);

代码执行者1.0

功能：

       在TextBox中输入一段C#代码，点击按钮即可运行该代码。

界面预览：

本程序源码参见上面动态编译的例子。

演示程序下载 ： Demo