[C#]通过反射访问类私有成员

参考链接：

https://www.cnblogs.com/adodo1/p/4328198.html

代码如下：

 using System;
 using System.Reflection;
 using UnityEngine;

 public static class ObjectExtension
 {
     //获取私有字段的值
     public static T GetPrivateField<T>(this object instance, string fieldName)
     {
         BindingFlags flags = BindingFlags.Instance | BindingFlags.NonPublic;
         Type type = instance.GetType();
         FieldInfo info = type.GetField(fieldName, flags);
         return (T)info.GetValue(instance);
     }

     //设置私有字段的值
     public static void SetPrivateField(this object instance, string fieldName, object value)
     {
         BindingFlags flags = BindingFlags.Instance | BindingFlags.NonPublic;
         Type type = instance.GetType();
         FieldInfo info = type.GetField(fieldName, flags);
         info.SetValue(instance, value);
     }

     //获取私有属性的值
     public static T GetPrivateProperty<T>(this object instance, string propertyName)
     {
         BindingFlags flags = BindingFlags.Instance | BindingFlags.NonPublic;
         Type type = instance.GetType();
         PropertyInfo info = type.GetProperty(propertyName, flags);
         return (T)info.GetValue(instance, null);
     }

     //设置私有属性的值
     public static void SetPrivateProperty<T>(this object instance, string propertyName, object value)
     {
         BindingFlags flags = BindingFlags.Instance | BindingFlags.NonPublic;
         Type type = instance.GetType();
         PropertyInfo info = type.GetProperty(propertyName, flags);
         info.SetValue(instance, value, null);
     }

     //调用私有方法
     public static object CallPrivateMethod(this object instance, string methodName, params object[] param)
     {
         BindingFlags flags = BindingFlags.Instance | BindingFlags.NonPublic;
         Type type = instance.GetType();
         MethodInfo info = type.GetMethod(methodName, flags);
         return info.Invoke(instance, param);
     }
 }

 public class TestReflectionClass {
     private int field;
     private string Property { get; set; }

     public TestReflectionClass()
     {
         field = ;
         Property = "a";
     }

     private void SetValue(int field, string property)
     {
         this.field = field;
         this.Property = property;
     }
 }

 public class TestReflection : MonoBehaviour {

     void Start ()
     {
         TestReflectionClass testClass = new TestReflectionClass();

         print(testClass.GetPrivateField<int>("field"));//
         print(testClass.GetPrivateProperty<string>("Property"));//a

         testClass.CallPrivateMethod("SetValue", , "b");

         testClass.SetPrivateProperty<string>("Property", "c");
         print(testClass.GetPrivateField<int>("field"));//
         print(testClass.GetPrivateProperty<string>("Property"));//c
     }
 }