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(nullnull);
                
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
posted @ 2007-08-25 04:00  小y  阅读(4803)  评论(7编辑  收藏  举报