using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Reflection; namespace MethodInfoInvokeDemo { public class ReflectTest { public void MethodWithNoParaNoReturn() { Console.WriteLine("不带参数且不返回值的方法"); } public string MethodWithNoPara() { Console.WriteLine("不带参数且有返回值的方法"); return "MethodWithNoPara"; } public string Method1(string str) { Console.WriteLine("带参数且有返回值的方法"); return str; } public string Method2(string str, int index) { Console.WriteLine("带参数且有返回值的方法"); return str + index.ToString(); } public string Method3(string str, out string outStr) { outStr = "bbbb"; Console.WriteLine("带参数且有返回值的方法"); return str; } public static string StaticMethod() { Console.WriteLine("静态方法"); return "cccc"; } } class Program { static void Main(string[] args) { Type type = typeof(ReflectTest); object reflectTest = Activator.CreateInstance(type); //不带参数且不返回值的方法的调用 MethodInfo methodInfo = type.GetMethod("MethodWithNoParaNoReturn"); methodInfo.Invoke(reflectTest, null); Console.WriteLine(); //不带参数且有返回值的方法的调用 methodInfo = type.GetMethod("MethodWithNoPara"); Console.WriteLine(methodInfo.Invoke(reflectTest, null).ToString()); Console.WriteLine(); //带参数且有返回值的方法的调用 methodInfo = type.GetMethod("Method1", new Type[]{typeof(string)}); Console.WriteLine(methodInfo.Invoke(reflectTest, new object[]{"测试"}).ToString()); Console.WriteLine(); //带多个参数且有返回值的方法的调用 methodInfo = type.GetMethod("Method2", new Type[] { typeof(string), typeof(int) }); Console.WriteLine(methodInfo.Invoke(reflectTest, new object[] { "测试", 100 }).ToString()); //Console.WriteLine(); //methodInfo = type.GetMethod("Method3", new Type[] { typeof(string), typeof(string) }); //string outStr = ""; //Console.WriteLine(methodInfo.Invoke(reflectTest, new object[] { "测试", outStr }).ToString()); Console.WriteLine(); //静态方法的调用 methodInfo = type.GetMethod("StaticMethod"); Console.WriteLine(methodInfo.Invoke(null, null).ToString()); Console.ReadKey(); } } }