C#读取匿名对象的属性值的方法总结

Bertha 。 2021-12-05 05:57 328阅读 0赞

### 文章目录 ###

*   *  1、通过反射的方式获取属性值
     *  2、新建个扩展方法，将object转成对应的匿名对象

--------------------

通过new出匿名对象，可以直接调用该匿名对象的属性名，获取属性值。

var objUser = new { Name="Lilei",Age=18 };
    //此时可直接读取匿名类属性
    Console.WriteLine("Name:" + objUser.Name);// Name:Lilei

但当将匿名对象转换成object后，就无法直接读取属性值了；

static object GetObj()
    { 
        var obj = new {  Name = "Lilei", Age = 18 };
        return obj;
    }
    static void Main(string[] args)
    { 
    	var obj = GetObj();//此时已无法通过obj.Name的方式获取属性值了
    }

## 1、通过反射的方式获取属性值 ##

static object GetObj()
    { 
        var obj = new {  Name = "Lilei", Age = 18 };
        return obj;
    }
    static void Main(string[] args)
    { 
    	var obj = GetObj();
    	//此时可通过反射的方式获取属性值
    	string objName = obj.GetType().GetProperty("Name").GetValue(obj).ToString();
    	Console.WriteLine(objName);// Lilei
    }

## 2、新建个扩展方法，将object转成对应的匿名对象 ##

class Program
    { 
    	static void Main(string[] args)
    	{ 
    		var obj = GetObj();
            var user = obj.ObjCast(new {  Name = "", Age = 0 });
            Console.WriteLine("Name:{0},Age:{1}", user.Name, user.Age);// Name:Lilei,Age:18
    
          	var objList = GetObjList();
          	var userList = objList.Select(p => p.ObjCast(new {  Name = "", Age = 0 })).ToList();
          	userList.ForEach(p =>
          	{ 
            	Console.WriteLine("Name:{0},Age:{1}", p.Name, p.Age);
          	});
          	// Name:Lilei,Age:18
          	// Name:HanMeimei,Age:20
    	}
    	static object GetObj()
    	{ 
        	var obj = new {  Name = "Lilei", Age = 18 };
        	return obj;
    	}
    	static List<object> GetObjList()
        { 
            List<object> objList = new List<object>();
            objList.Add(new {  Name = "Lilei", Age = 18 });
            objList.Add(new {  Name = "HanMeimei", Age = 20 });
            return objList;
        }
    }
    static class Extensions
    { 
    	public static T ObjCast<T>(this object obj, T sample)
    	{ 
    		return (T)obj;
    	}
    }

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博客园同步更新地址：[https://www.cnblogs.com/willingtolove/p/11204018.html][https_www.cnblogs.com_willingtolove_p_11204018.html]  
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[https_www.cnblogs.com_willingtolove_p_11204018.html]: https://www.cnblogs.com/willingtolove/p/11204018.html