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  • 两种动态创建对象的方法

    1、如果要创建的对象,在一个assembly中,那么方法可以有很多。如这种方式:
                    System.Reflection.Assembly ass = System.Reflection.Assembly.LoadFrom(@"D:Programsvs.netInterfaceCominDebugCom.dll");
                    Type t 
    = ass.GetType("Com.Class1");
                    
                    
    string[] implCtorSig = {"System.String"};
                    Type[] ctorSigArr 
    = Type.GetTypeArray(implCtorSig);
                    System.Reflection.ConstructorInfo ctorInfo 
    = t.GetConstructor(ctorSigArr);            
                    
    object[] ctorArgs = {"1"};
                    
    object obj = ctorInfo.Invoke(ctorArgs);    
                    Com.IDict idict 
    = (Com.IDict)obj;
    2、如果对象在另一个assembly中,那么上述代码最后一行,会抛出一个invalid cast异常。而用下面的方式,是可以的:
                    System.Reflection.Assembly ass = System.Reflection.Assembly.LoadFrom(@"D:Programsvs.netInterfaceCominDebugCom.dll");
                    Type t 
    = ass.GetType("Com.Class1");
                    
    object[] ctorArgs = {"1"};
                System.Runtime.Remoting.ObjectHandle oh 
    = Activator.CreateInstance(ass.FullName,t.FullName,true,System.Reflection.BindingFlags.CreateInstance,null,ctorArgs,System.Globalization.CultureInfo.CurrentCulture,new Object[]{},null);
        Com.IDict dict 
    = (Com.IDict)(oh.Unwrap());

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  • 原文地址:https://www.cnblogs.com/juqiang/p/45430.html
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