// 写入 protected void Button2_Click( object sender, EventArgs e) { HttpCookie cookie = new HttpCookie( " MyCook " ); // 初使化并设置Cookie的名称 DateTime dt = DateTime.Now; TimeSpan ts = new TimeSpan( 0 , 0 , 1 , 0 , 0 ); // 过期时间为1分钟 cookie.Expires = dt.Add(ts); // 设置过期时间 cookie.Values.Add( " userid " , " userid_value " ); cookie.Values.Add( " userid2 " , " userid2_value2 " ); Response.AppendCookie(cookie); // 输出该Cookie的所有内容 // Response.Write(cookie.Value); // 输出为：userid=userid_value&userid2=userid2_value2 } // 读取 protected void Button1_Click( object sender, EventArgs e) { // HttpCookie cokie = new HttpCookie("MyCook"); // 初使化 if (Request.Cookies[ " MyCook " ] != null ) { // Response.Write("Cookie中键值为userid的值:" + Request.Cookies["MyCook"]["userid"]); // 整行 // Response.Write("Cookie中键值为userid2的值" + Request.Cookies["MyCook"]["userid2"]); Response.Write(Request.Cookies[ " MyCook " ].Value); // 输出全部的值 } } // 修改Cookie protected void Button3_Click( object sender, EventArgs e) { // 获取客户端的Cookie对象 HttpCookie cok = Request.Cookies[ " MyCook " ]; if (cok != null ) { // 修改Cookie的两种方法 cok.Values[ " userid " ] = " alter-value " ; cok.Values.Set( " userid " , " alter-value " ); // 往Cookie里加入新的内容 cok.Values.Set( " newid " , " newValue " ); Response.AppendCookie(cok); } } // 删除Cookie protected void Button4_Click( object sender, EventArgs e) { HttpCookie cok = Request.Cookies[ " MyCook " ]; if (cok != null ) { if ( ! CheckBox1.Checked) { cok.Values.Remove( " userid " ); // 移除键值为userid的值 } else { TimeSpan ts = new TimeSpan( - 1 , 0 , 0 , 0 ); cok.Expires = DateTime.Now.Add(ts); // 删除整个Cookie，只要把过期时间设置为现在 } Response.AppendCookie(cok); } }
