动态编译执行c#代码

 

动态编译执行c#代码

Microsoft.CSharp.CSharpCodeProvider provider = new Microsoft.CSharp.CSharpCodeProvider();
            System.CodeDom.Compiler.ICodeCompiler comp = provider.CreateCompiler();
            System.CodeDom.Compiler.CompilerParameters cp = new System.CodeDom.Compiler.CompilerParameters();
            cp.ReferencedAssemblies.Add("system.dll") ;
            cp.ReferencedAssemblies.Add("system.data.dll") ;
            cp.ReferencedAssemblies.Add("system.xml.dll") ;
            cp.GenerateExecutable = false ;
            cp.GenerateInMemory = true ;
            string code = @"using System;
                            using System.Data;   
                            using System.Xml;      
                            public class Judgement
                            {        
                                 public object GetJude()
                                 {   
                                      return (" + expression + @");   
                                 }   
                            }" ;
            System.CodeDom.Compiler.CompilerResults cr = comp.CompileAssemblyFromSource(cp,code);
            System.Diagnostics.Debug.Write(code);
            if(cr.Errors.HasErrors)
            {
                System.Text.StringBuilder errorMsg = new System.Text.StringBuilder();
              
                foreach(System.CodeDom.Compiler.CompilerError err in cr.Errors)
                {
                    errorMsg.Append(err.ErrorText );
                }
                System.Diagnostics.Debug.WriteLine(errorMsg.ToString());
              
                throw new System.Exception("编译错误: " + errorMsg.ToString());
                //return false;
            }
            else
            {
                System.Reflection.Assembly tmp = cr.CompiledAssembly;
                object _Compiled = tmp.CreateInstance("Judgement");
                System.Reflection.MethodInfo mi = _Compiled.GetType().GetMethod("GetJude");
               
                return mi.Invoke(_Compiled,null);
            }

 

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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);