单个cookie和cookie字典在浏览器中的存储格局如下：
可以看到，，单个cookie是以单一键值对的方法存储的，而cookie字典的值则是以多个&标记相连的。
cookie字典用于用单个cookie生存多个值的情况。
下面是单个cookie和cookie字典的操纵示例：
1、单个cookie
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title></title> </head> <body> <form runat="server"> <div> <asp:Label runat="server" Text="Label"></asp:Label> <br /> <asp:Button runat="server" Text="设置单个cookie" /> <asp:Button runat="server" Text="获取单个cookie" /> <asp:Button runat="server" Text="改削单个cookie" /> </div> </form> </body> </html>
.cs
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; namespace WebApplication1 { public partial class CookieSingle : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } protected void Button1_Click(object sender, EventArgs e) { HttpCookie cookie = new HttpCookie("xfk_sid") { Value = "xfk11111111", Expires = DateTime.Now.AddDays(1) }; Response.Cookies.Add(cookie); } protected void Button2_Click(object sender, EventArgs e) { var objCookie = Request.Cookies["xfk_sid"]; if (objCookie != null) { this.Label1.Text += objCookie.Value + "----"; } } protected void Button3_Click(object sender, EventArgs e) { HttpCookie c1 = Request.Cookies["xfk_sid"]; c1.Value = "after1111111111"; Response.Cookies.Add(c1); } } }
2、cookie字典
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <title></title> </head> <body> <form runat="server"> <div> <asp:Label runat="server" Text="Label"></asp:Label> <br /> <asp:Button runat="server" Text="设置cookie字典" /> <asp:Button runat="server" Text="获取cookie字典" /> <asp:Button runat="server" Text="改削cookie字典" /> </div> </form> </body> </html>
.cs
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; namespace WebApplication1 { public partial class CookieDict : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } protected void Button1_Click(object sender, EventArgs e) { HttpCookie cookie = new HttpCookie("xfk_sidDict"); cookie.Values.Add("s1", "ssssssssss"); cookie.Values.Add("s2", "iiiiiiiii"); cookie.Values.Add("s3", "ddddddddddd"); Response.Cookies.Add(cookie); } protected void Button2_Click(object sender, EventArgs e) { HttpCookie cookie = Request.Cookies["xfk_sidDict"]; if (cookie != null && cookie.HasKeys) { foreach (string item in cookie.Values) { this.Label1.Text += "---" + cookie.Values[item]; } } } protected void Button3_Click(object sender, EventArgs e) { HttpCookie cookie = Request.Cookies["xfk_sidDict"]; if (cookie != null && cookie.HasKeys) { cookie.Values.Set("s1", "hahahahahah"); cookie.Values.Set("s3", "heiheiheiheihi"); Response.Cookies.Add(cookie); } } } }
参考：https://www.cnblogs.com/chenlihong-886/articles/6234535.html
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原文地点：https://www.cnblogs.com/zhaow/p/8981744.html