在运行时加载托管dll并调用方法 [英] Loading managed dll at runtime and calling a method

问题描述

我想知道如何调用dll中定义的类的方法. dll中定义的类使用以下接口:

I would like to know, how I can call the methods of the class defined in my dll. The class defined in the dll uses this interface:

interface class ILightControl{
            void Settings();
};

这是我需要调用该方法的部分.

This is the part, where I need to call the method.

System::Reflection::Assembly^ x = System::Reflection::Assembly::LoadFile("C:\\LightControl.dll");
             array<Type^>^t = x->GetTypes();
             Type^InterfaceType;
             Object^obj;
             for(int i = 0; i < t->Length; i++){
                 InterfaceType = t[i]->GetInterface("ILightControl");
                 if(InterfaceType){
                     obj = Activator::CreateInstance(t[i]);
                     //I need to call Settings(); here
                 }
}

现在如何调用该方法?非常感谢您的帮助！

How call I now call the method? Thank you very much for your help!

推荐答案

在这种情况下，我认为您可能必须使用反射调用该方法

In that case I think you may have to call the method using reflection

System::Reflection::MethodInfo^ mi = interfaceType->GetMethod("Settings");
cli::array<System::Object> parameters = gcnew cli::array<System::Object>();
// add any parameter here
System::Object^ retVal = mi->Invoke(obj, parameters)

((ILightControl)obj)->Settings();

尝试一下作为测试

Try this as a test

<br />
<br />
  LightControl^ lc = (LightControl^)Activator::CreateInstance(LightControl::typeid));<br />
((ILightControl^)lc)->Settings(); <br />

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