C#讀取匿名對象的屬性值的方法總結

目錄

• 1、通過反射的方式獲取屬性值
• 2、新建個擴展方法，將object轉成對應的匿名對象

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通過new出匿名對象，可以直接調用該匿名對象的屬性名，獲取屬性值。

var objUser = new {Name="Lilei",Age=18 };
//此時可直接讀取匿名類屬性
Console.WriteLine("Name:" + objUser.Name);// Name:Lilei

但當將匿名對象轉換成object后，就無法直接讀取屬性值了；

static object GetObj()
{
    var obj = new { Name = "Lilei", Age = 18 };
    return obj;
}
static void Main(string[] args)
{
	var obj = GetObj();//此時已無法通過obj.Name的方式獲取屬性值了
}

1、通過反射的方式獲取屬性值

static object GetObj()
{
    var obj = new { Name = "Lilei", Age = 18 };
    return obj;
}
static void Main(string[] args)
{
	var obj = GetObj();
	//此時可通過反射的方式獲取屬性值
	string objName = obj.GetType().GetProperty("Name").GetValue(obj).ToString();
	Console.WriteLine(objName);// Lilei
}

2、新建個擴展方法，將object轉成對應的匿名對象

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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