Session：在服务器的内存中;
Cookie：在客户端的浏览器中;
一般在使用Session的时候，都会有一个实体类，用于存储用户名等数据，所以在这里我们定义一个类；
里面就放两个字段：用户名，和密码;
public
class
UserTest
{
public string UserName { get ; set ; }
public string UserPwd { get ; set ; }
}
{
public string UserName { get ; set ; }
public string UserPwd { get ; set ; }
}
然后我们要获取存数据来源
string
userName
=
this
.txtLoginId.Text.Trim();
string userPwd = this .txtLoginPwd.Text.Trim();
string userPwd = this .txtLoginPwd.Text.Trim();
接着就是把数据放到Session中了。
UserTest user
=
new
UserTest();
user.UserName = userName;
user.UserPwd = userPwd;
Session[ " UserName " ] = user;
user.UserName = userName;
user.UserPwd = userPwd;
Session[ " UserName " ] = user;
现在我们存是存好了，那我们该怎么取呢？在页面加载的时候加上如下代码！
if
(
!
IsPostBack)
{
if (Session[ " UserName " ] != null )
{
UserTest user = Session[ " UserName " ] as UserTest;
Response.Write("<script>alert('欢迎您"+user.UserName+"会员');</script>");
{
if (Session[ " UserName " ] != null )
{
UserTest user = Session[ " UserName " ] as UserTest;
Response.Write("<script>alert('欢迎您"+user.UserName+"会员');</script>");
}
}
}
以上就是Session的用法；
下面说一下Cookie的用法；需要用到HttpCookie类;
存值:
string
LoginId
=
this
.txtLogin.Text.Trim();
HttpCookie cookie = new HttpCookie( " UserName " , LoginId);
Response.Cookies.Add(cookie);
HttpCookie cookie = new HttpCookie( " UserName " , LoginId);
Response.Cookies.Add(cookie);
这样就将数据存放到Cookie中了，当然这只是Asp.net的存放方式，你也可以使用JQuery的Cookie存放。
取值：
if
(
!
IsPostBack)
{
if (Request.Cookies[ " UserName " ] != null )
{
this .txtLogin.Text = Request.Cookies[ " UserName " ].Value;
}
}
{
if (Request.Cookies[ " UserName " ] != null )
{
this .txtLogin.Text = Request.Cookies[ " UserName " ].Value;
}
}
