Question

我有问题......

我在运行时开发了用于创建动态DLL的代理类，并通过在我的项目中添加“references”在另一个项目中使用它。我写道：VC 2010，.NET 4.0，C＃。

public DynamicProxy(
        string nameModule,
        System.Reflection.Emit.AssemblyBuilderAccess accessModule,
        string assemblyFileName = null,
        IEnumerable<System.Reflection.Emit.CustomAttributeBuilder> customAttributes = null)
{
    try
    {
        // module name
        m_AssemblyFileName = assemblyFileName;
        // try doing something
        AppDomain domain = AppDomain.CurrentDomain;
        // create assembly
        m_MainBuilder = (customAttributes != null) ?
            domain.DefineDynamicAssembly(
            new System.Reflection.AssemblyName(nameModule) { Version = new Version("6.11.395.0610") },
            accessModule,
            customAttributes.ToArray()) :
            domain.DefineDynamicAssembly(
            new System.Reflection.AssemblyName(nameModule),
            accessModule);
        // create module
        m_MainModule = (!string.IsNullOrEmpty(m_AssemblyFileName)) ?
            m_MainBuilder.DefineDynamicModule(m_MainBuilder.GetName().Name, m_AssemblyFileName, true) :
            m_MainBuilder.DefineDynamicModule(m_MainBuilder.GetName().Name, true);
        // create properties storage
        Properties = new Dictionary<string, PropertyTypeInfo>();
    }
        catch (Exception ex)
        {
            throw (new Exception(ex.Message));
        }
}

public Type CreateInstance(string className, System.Reflection.TypeAttributes typeAccess)
{
    Type result = null;
    try
    {
        // create class
        System.Reflection.Emit.TypeBuilder typeBuilder = m_MainModule.DefineType("System.Spyrytus.DynamicBuilder." + className, typeAccess);
        // create constructor
        System.Reflection.Emit.ConstructorBuilder cBuilder = typeBuilder.DefineConstructor(System.Reflection.MethodAttributes.Public, System.Reflection.CallingConventions.Standard, Type.EmptyTypes);
        // create event
        System.Reflection.Emit.FieldBuilder eventField =
            typeBuilder.DefineField("PropertyChanged",
            (!UsePropertyChangedEventHandler) ? typeof(PropertyChangedValueEventHandler) : typeof(System.ComponentModel.PropertyChangedEventHandler),
            System.Reflection.FieldAttributes.Private);
        // create event :D
        System.Reflection.Emit.EventBuilder eventBuilder = typeBuilder.DefineEvent(
            "PropertyChanged",
            System.Reflection.EventAttributes.None,
typeof(System.ComponentModel.PropertyChangedEventHandler));
        // add event handler
        eventBuilder.SetAddOnMethod(CreateAddRemoveMethodsEvent(typeBuilder, eventField, true));
        // remove handler
        eventBuilder.SetRemoveOnMethod(CreateAddRemoveMethodsEvent(typeBuilder, eventField, false));
        // handler
        System.Reflection.Emit.MethodBuilder raise = CreateRaisePropertyChanged(typeBuilder, eventField);
        eventBuilder.SetRaiseMethod(raise);

        // create property
        List<System.Reflection.Emit.PropertyBuilder> fields = CreatePropery(ref typeBuilder, cBuilder.GetILGenerator(), raise);

        System.Reflection.Emit.MethodBuilder toStrMethod = typeBuilder.DefineMethod(
            "ToString",
            System.Reflection.MethodAttributes.Public | System.Reflection.MethodAttributes.Virtual | System.Reflection.MethodAttributes.HideBySig | System.Reflection.MethodAttributes.ReuseSlot,
            typeof(string),
            Type.EmptyTypes);
        typeBuilder.DefineMethodOverride(toStrMethod, typeof(object).GetMethod("ToString"));
        System.Reflection.Emit.ILGenerator toStr = toStrMethod.GetILGenerator();
        // create StringBuilder in string
        System.Reflection.Emit.LocalBuilder retValue = toStr.DeclareLocal(typeof(StringBuilder));
        toStr.Emit(System.Reflection.Emit.OpCodes.Newobj, retValue.LocalType.GetConstructor(Type.EmptyTypes));
        toStr.Emit(System.Reflection.Emit.OpCodes.Stloc_S, retValue);
        System.Reflection.Emit.Label exception = toStr.BeginExceptionBlock();
        // read all property
        foreach (System.Reflection.Emit.PropertyBuilder piItem in fields)
        {
            // local variable
            System.Reflection.Emit.LocalBuilder local = toStr.DeclareLocal(piItem.PropertyType);
            // read value
            toStr.Emit(System.Reflection.Emit.OpCodes.Ldarg_0);
            toStr.Emit(System.Reflection.Emit.OpCodes.Call, piItem.GetGetMethod());
            toStr.Emit(System.Reflection.Emit.OpCodes.Stloc_S, local);
            // create Format
            toStr.Emit(System.Reflection.Emit.OpCodes.Ldloc_S, retValue);
            toStr.Emit(System.Reflection.Emit.OpCodes.Ldstr, piItem.Name + ": {0}\r\n");
            toStr.Emit(System.Reflection.Emit.OpCodes.Ldloc_S, local);
            toStr.Emit(System.Reflection.Emit.OpCodes.Box, piItem.PropertyType);
            toStr.Emit(System.Reflection.Emit.OpCodes.Callvirt, retValue.LocalType.GetMethod("AppendFormat", new Type[] { typeof(string), piItem.PropertyType }));
            toStr.Emit(System.Reflection.Emit.OpCodes.Pop);
        }
        toStr.BeginCatchBlock(typeof(Exception));
        toStr.EndExceptionBlock();
        // exit from method
        toStr.Emit(System.Reflection.Emit.OpCodes.Ldloc_S, retValue);
        toStr.Emit(System.Reflection.Emit.OpCodes.Callvirt, retValue.LocalType.GetMethod("ToString", Type.EmptyTypes));
        toStr.Emit(System.Reflection.Emit.OpCodes.Ret);

        // create type
        result = typeBuilder.CreateType();
    }
    catch (Exception ex)
    {
        throw (new Exception(ex.Message));
    }
    return result;
}

创建动态对象：

using (Spyrytus.Windows.MSSQL.DynamicProxy proxy = new Spyrytus.Windows.MSSQL.DynamicProxy("module", System.Reflection.Emit.AssemblyBuilderAccess.Save, "object.dll", attrs))
{
    proxy.CreateInstance("Foo", System.Reflection.TypeAttributes.Public);
    proxy.Save();
}

通过右键单击鼠标在参考中添加此DLL，并尝试使用它：

System.Spyrytus.DynamicBuilder.Foo t = new System.Spyrytus.DynamicBuilder.Foo()

错误：

An unhandled exception of type 'System.IO.FileNotFoundException' occurred in mscorlib.dll Additional information: Could not load file or assembly 'module, Version=6.11.395.610, Culture=neutral, PublicKeyToken=null' or one of its dependencies. Could not found special file.

这是什么意思？

先谢谢。

问候：尤金。

Answer 1

使用Dependency Walker实用程序http://www.dependencywalker.com

调查您的EXE非常值得

它会告诉您哪些模块实际导入EXE（因此它们必须可用于运行您的EXE）。你能说明Dependency Walker找到哪些导入？

为什么我无法使用DynamicAssembly DLL启动EXE？

先谢谢。

1 个答案: