[转]C#反射获取私有字段_poll4491

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[转]C#反射获取私有字段

(2016-02-29 11:47:16)

分类： CSharp

转自：http://blog.csdn.net/liyifei21/article/details/34838375
using System;
using System.Collections.Generic;
using System.Text;
using System.Reflection;
namespace ReflectionDemo
{
class Program
{
static void Main(string[] args)
{
Type t = typeof(ChangeValue);
Type[] types = new Type[0];//为构造函数准备参数类型
ConstructorInfo ci = t.GetConstructor(types); //获得构造函数
object[] objs = new object[0];//为构造函数准备参数值
object obj = ci.Invoke(objs);//调用构造函数创建对象
MethodInfo mi = t.GetMethod("WriteLine");//获得公有的writeline方法
mi.Invoke(obj, null);
FieldInfo fi = t.GetField("myValue", BindingFlags.NonPublic | BindingFlags.Instance);//获得私有字段
FieldInfo[] fis=t.GetFields(BindingFlags.NonPublic | BindingFlags.Instance|BindingFlags.Public);
Console.WriteLine(fis.Length);
foreach (var fieldInfo in fis)
{
Console.WriteLine(fieldInfo.GetValue(obj));
}
fi.SetValue(obj, "new Value"); //改写私有字段
mi.Invoke(obj, null);
MethodInfo mi2 = t.GetMethod("Write", BindingFlags.NonPublic | BindingFlags.Instance);//获得私有的Write方法
mi2.Invoke(obj, null);
Console.ReadLine();
}
}
public class ChangeValue
{
private string myValue = "old Value";
public string firstValue = "values1";
public void WriteLine()
{
Console.WriteLine("MyValue is: " + myValue);
}
private void Write()
{
Console.WriteLine("MyValue is: " + myValue);
}
}
}

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