一个Reflection 反射的例子

//新建一个类库项目，增加一个GetSum方法。 using System; namespace ClassLibrary1 { public class Class1 { public Class1() { } public int GetSum(int x, int y) { return x + y; } } } //再另建一个项目，在项目中引用上面生成的ClassLibrary1.DLL System.Reflection.Assembly a = System.Reflection.Assembly.LoadFrom( "ClassLibrary1.DLL "); System.Type t = a.GetType( "ClassLibrary1.Class1 "); //动态生成ClassLibrary1.Class类的实例 Object theObj = System.Activator.CreateInstance(t); //参数信息，GetSum需要两个int参数 System.Type[] paramTypes = new System.Type[2]; paramTypes[0] = System.Type.GetType( "System.Int32 "); paramTypes[1] = System.Type.GetType( "System.Int32 "); System.Reflection.MethodInfo mi = t.GetMethod( "GetSum ", paramTypes); //参数值 Object[] parameters = new Object[2]; parameters[0] = 3; parameters[1] = 4; Object returnValue = mi.Invoke(theObj, parameters); Console.WriteLine( "ClassLibrary1.Class1.GetSum(3, 4) returns: {0} ", returnValue.ToString());