namespace Model
{
/// <summary>
/// Admin类
/// </summary>
[Serializable]
public class Admin
{ #region fields
private string userName;
private string userPass;
#endregion #region properties
///<summary>
///管理员账号
///</summary>
public string UserName//声明了UserName参数并对其属性予以赋值
{
get { return userName; }
set { userName = value; }
}
///<summary>
///管理员密码
///</summary>
public string UserPass
{
get { return userPass; }
set { userPass = value; }
} #endregion ///<summary>
///constructor
///</summary>
public Admin(string userName, string userPass)//定义了Admin的方法
{
this.userName = userName;
this.userPass = userPass;
} public Admin()
{ }
}}
源码如上,请问下 this.userName = userName;这到底是什么意思啊!!有什么意义呢?
{
/// <summary>
/// Admin类
/// </summary>
[Serializable]
public class Admin
{ #region fields
private string userName;
private string userPass;
#endregion #region properties
///<summary>
///管理员账号
///</summary>
public string UserName//声明了UserName参数并对其属性予以赋值
{
get { return userName; }
set { userName = value; }
}
///<summary>
///管理员密码
///</summary>
public string UserPass
{
get { return userPass; }
set { userPass = value; }
} #endregion ///<summary>
///constructor
///</summary>
public Admin(string userName, string userPass)//定义了Admin的方法
{
this.userName = userName;
this.userPass = userPass;
} public Admin()
{ }
}}
源码如上,请问下 this.userName = userName;这到底是什么意思啊!!有什么意义呢?
this.userName是admin的属性
等号后面的userName是方法传递的形参
#region fields
private string userName;
private string userPass;
#endregion
public Admin(string userName, string userPass)//定义了Admin的方法
{
this.userName = userName;
this.userPass = userPass;
}
它的参数名(userName)和字段名(userName)。构造函数的函数体内的代码本意是想将参数userName的值传给字段userName。由于恰好参数名和字段名相同,如果你在构造函数里这样写userName = userName;就相当于把参数userName的值赋给参数userName。this代表对象本身this.userName表示这个对象的一个叫userName的字段,所以this.userName=userName;这样就能达到我们的目的了。当然我看到你同时也定义了一个叫UserName的属性你也可以像这样写 UserName = userName;
{
this.userName = userName;//this.userName 这里userName 是类的成员变量 this是为了区分这两个userName
this.userPass = userPass;
}
这么写你对比写就理解了
public Admin(string uName, string uPass
{
this.userName = uName;//或userName = uName
this.userPass = uPass;//userPass = uPass
}
//楼主以后可以约定函数的参数以小写字母p开头,以区别与类成员
public Admin(string pUserName, string pUserPass
{
this.userName = pUserName;
this.userPass = pUserPass;
}
public Admin(string pUserName, string pUserPass
{
this.userName = pUserName;
this.userPass = pUserPass;
}