关于动态编译的问题（为啥生成的文件最后删除不掉）

angeldgz 2013-05-19 11:10:43

上代码：

 public static T Eval<T>(string code)

        {

            //get the code to compile  

            string strSourceCode = GetComplainCode(typeof(T).Name,code);  

            //1. Create an addtional AppDomain  

            AppDomainSetup objSetup = new AppDomainSetup();  

            objSetup.ApplicationBase = AppDomain.CurrentDomain.BaseDirectory;  

            AppDomain objAppDomain = AppDomain.CreateDomain("MyAppDomain", null, objSetup);  

            // 1.Create a new CSharpCodePrivoder instance  

            CSharpCodeProvider objCSharpCodePrivoder = new CSharpCodeProvider();  

            // 2.Sets the runtime compiling parameters by crating a new CompilerParameters instance  

            CompilerParameters objCompilerParameters = new CompilerParameters();  

            objCompilerParameters.ReferencedAssemblies.Add("system.dll");

            objCompilerParameters.ReferencedAssemblies.Add("gzLib.dll");  

            // Load the remote loader interface  

            //objCompilerParameters.ReferencedAssemblies.Add("RemoteAccess.dll");  

            // Load the resulting assembly into memory  

            objCompilerParameters.GenerateInMemory = false;

            string outFileName = "TempCompilerResult" + new Random().Next() + ".dll";

            objCompilerParameters.OutputAssembly = outFileName;

            // 3.CompilerResults: Complile the code snippet by calling a method from the provider  

            CompilerResults cr = objCSharpCodePrivoder.CompileAssemblyFromSource(objCompilerParameters, strSourceCode);  

            if (cr.Errors.HasErrors)  {

                StringBuilder error = new StringBuilder();

                error.Append("Error Compiling Expression: ");

                foreach (CompilerError err in cr.Errors)

                {

                    error.AppendFormat("{0}\n", err.ErrorText);

                }

                throw new Exception("Error Compiling Expression: " + error.ToString());

            } 

            // 4. Invoke the method by using Reflection  

            object evalObj=objAppDomain.CreateInstance(cr.CompiledAssembly.FullName, "GzAutoEval._GzEvalClass").Unwrap();

            // with help of factory, create a real 'LiveClass' instance  

            MethodInfo mi = evalObj.GetType().GetMethod("Eval");

            T value = (T)mi.Invoke(evalObj, null);

            AppDomain.Unload(objAppDomain);  

            System.IO.File.Delete(outFileName);

            return value;

        }