C# 反射的用法
首先我们建立一个类库,将它生成为HelloWorld.dll,
using System;
namespace Webtest
{
public interface interface1
{
int add();
}
public class ReflectTest:interface1
{
public String Write;
private String Writec;
public String Writea
{
get
{
return Write;
}
set
{
Write = value;
}
}
private String Writeb
{
get
{
return Writec;
}
set
{
Writec = value;
}
}
public ReflectTest()
{
this.Write = "Write";
this.Writec = "Writec";
}
public ReflectTest(string str1,string str2)
{
this.Write = str1;
this.Writec = str2;
}
public string WriteString(string s,int b)
{
return "欢迎您，" + s + "---" + b; ;
}
public static string WriteName(string s)
{
return "欢迎您光临，" + s;
}
public string WriteNoPara()
{
return "您使用的是无参数方法";
}
private string WritePrivate()
{
return "私有类型的方法";
}
public int add()
{
return 5;
}
}
}
然后,建立再建立一个项目引入该HelloWorld.dll,
using System;
using System.Threading;
using System.Reflection;
class Test
{
delegate string TestDelegate(string value,int value1);
static void Main()
{
//Assembly t = Assembly.LoadFrom("HelloWorld.dll"); 与下面相同的效果
Assembly t = Assembly.Load("HelloWorld");
//**********************************************************************
foreach (Type aaa in t.GetTypes())
{
//Console.Write(aaa.Name); //显示该dll下所有的类
}
//**********************************************************************
Module[] modules = t.GetModules();
foreach (Module module in modules)
{
//Console.WriteLine("module name:" + module.Name);//显示模块的名字本例为"HelloWorld.dll"
}
//**********************************************************************
Type a = typeof(Webtest.ReflectTest);//得到具体的类的类型,和下面一个效果
//Type a = t.GetType("Webtest.ReflectTest");//
//Console.Write(a.Name);
//**********************************************************************
string[] bb =...{ "aaaa", "bbbbb" };
object obj = Activator.CreateInstance(a,bb); //创建该类的实例,后面的bb为有参构造函数的参数
//object obj = t.CreateInstance("Webtest.ReflectTest");//与上面方法相同
//**********************************************************************
MethodInfo[] miArr = a.GetMethods();
foreach (MethodInfo mi0 in miArr)
{
//Console.Write(mi0.Name); //显示所有的共有方法
}
//**********************************************************************
MethodInfo mi = a.GetMethod("WriteString");//显示具体的方法
object[] aa=...{"使用的是带有参数的非静态方法",2};
string s = (string)mi.Invoke(obj,aa); //带参数方法的调用
MethodInfo mi1 = a.GetMethod("WriteName");
String[] aa1 =...{"使用的是静态方法"};
string s1 = (string)mi1.Invoke(null, aa1); //静态方法的调用
MethodInfo mi2 = a.GetMethod("WriteNoPara");
string s2 = (string)mi2.Invoke(obj, null); //不带参数的方法调用
MethodInfo mi3 = a.GetMethod("WritePrivate",BindingFlags.Instance | BindingFlags.NonPublic);
string s3 = (string)mi3.Invoke(obj, null); //私有类型方法调用
//Console.Write(s3);
//**********************************************************************
PropertyInfo[] piArr = a.GetProperties(BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public);
foreach (PropertyInfo pi in piArr)
{
//Console.Write(pi.Name); //显示所有的属性
}
//**********************************************************************
PropertyInfo pi1=a.GetProperty("Writea");
//pi1.SetValue(obj, "Writea", null);
//Console.Write(pi1.GetValue(obj,null));
PropertyInfo pi2 = a.GetProperty("Writeb", BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public);
pi2.SetValue(obj, "Writeb", null);
//Console.Write(pi2.GetValue(obj, null));
FieldInfo fi1 = a.GetField("Write");
//Console.Write(fi1.GetValue(obj));
//**********************************************************************
ConstructorInfo[] ci1 = a.GetConstructors();
foreach (ConstructorInfo ci in ci1)
{
//Console.Write(ci.ToString()); //获得构造函数的形式
}
ConstructorInfo asCI = a.GetConstructor(new Type[] ...{ typeof(string), typeof(string) });
//Console.Write(asCI.ToString());
//**********************************************************************
Webtest.interface1 obj1 = (Webtest.interface1)t.CreateInstance("Webtest.ReflectTest");
Webtest.ReflectTest obj2 = (Webtest.ReflectTest)t.CreateInstance("Webtest.ReflectTest");
//Console.Write(obj1.add());典型的工厂模式
//**********************************************************************
foreach (Type tt in t.GetTypes())
{
if (tt.GetInterface("interface1")!=null)
{
Webtest.interface1 obj3 = (Webtest.interface1)Activator.CreateInstance(a);
//Console.Write(obj3.add());
}
}
//**********************************************************************
TestDelegate method = (TestDelegate)Delegate.CreateDelegate(typeof(TestDelegate), obj, "WriteString");
//动态创建委托的简单例子
//Console.Write(method("str1", 2));
//**********************************************************************
ConstructorInfo asCI1 = a.GetConstructor(new Type[0]);
Webtest.ReflectTest obj5 = (Webtest.ReflectTest)asCI1.Invoke(null);
//通过无参构造函数实例化的方法
//Console.Write(obj5.Writea);
ConstructorInfo asCI2 = a.GetConstructor(new Type[] ...{ typeof(string), typeof(string) });
//通过有参构造函数实例化的方法
Webtest.ReflectTest obj6 = (Webtest.ReflectTest)asCI2.Invoke(bb);
Console.Write(obj6.Writea);
//**********************************************************************
Console.Read();
}
}
http://blog.csdn.net/xiaolei1982/archive/2008/04/15/2294364.aspx
