关于aspx.cs中应该用字段还是属性

namespace NameSpace1 {     
public partial class MyClass : System.Web.UI.Page     
{          
private int age = 5;
protected string name = "xiaoMing";
protected string Location {get; set;}         
protected void Page_Load(object sender, EventArgs e)         
{     

	Location = "beijing";     
}     
}
 } 

个人的理解，应该用属性。即protected string Location {get; set;}，不用 protected strng Location = "beijing"。

目前的理由：

1，protected string location = "beijing"会被默认构造函数初始化为string location = ""然后再赋值location = "beijing"。

而属性只被初始化一次，例如调用Set方法Location = "beijing";

2，属性体现了封装。可以添加判断，限制Location被随意地改变。