页面之间9种数据传递

  1 Session
  2 Application
  3 QueryString
  4 Cache    前4个传递方法一样
  5 Server.Transfer
  6 HttpConetext
  7 Cookie
  8 文件传输
  9 数据库
 10 
 11 using System;
 12 using System.Collections.Generic;
 13 using System.IO;
 14 using System.Linq;
 15 using System.Web;
 16 using System.Web.UI;
 17 using System.Web.UI.WebControls;
 18 namespace WebApp
 19 {
 20     public partial class WebForm2 : System.Web.UI.Page
 21     {
 22         protected void Page_Load(object sender, EventArgs e)
 23         {
 24         }
 25 
 26         internal int Addparm { get; set; }
 27 
 28         protected void Button1_Click(object sender, EventArgs e)
 29         {
 30             Addparm = 1;
 31             Server.Transfer("WebForm1.aspx");
 32         }
 33 
 34         protected void Button2_Click(object sender, EventArgs e)
 35         {
 36             Context.Items["Id"] = 2;
 37             Server.Transfer("WebForm1.aspx");
 38         }
 39 
 40         protected void Button4_Click(object sender, EventArgs e)
 41         {
 42             Response.Cookies.Add(new HttpCookie("Id", "3"));
 43             Response.Redirect("WebForm1.aspx");
 44         }
 45 
 46         protected void Button5_Click(object sender, EventArgs e)
 47         {
 48             Cache["Id"] = 4;
 49             Response.Redirect("WebForm1.aspx");
 50         }
 51 
 52         protected void Button3_Click(object sender, EventArgs e)
 53         {
 54             using (var _writer = new StreamWriter(Server.MapPath("a.txt")))
 55             {
 56                 _writer.Write("5");
 57                 _writer.Close();
 58             }
 59             Response.Redirect("WebForm1.aspx");
 60         }
 61     }
 62 }
 63 
 64 取数据:
 65 
 66 using System;
 67 using System.Collections.Generic;
 68 using System.IO;
 69 using System.Linq;
 70 using System.Web;
 71 using System.Web.UI;
 72 using System.Web.UI.WebControls;
 73 
 74 namespace WebApp
 75 {
 76     public partial class WebForm1 : System.Web.UI.Page
 77     {
 78         protected void Page_Load(object sender, EventArgs e)
 79         {
 80             /*
 81             // Services.Transfer
 82             var id = ((WebForm2) PreviousPage).Addparm;
 83             */
 84 
 85             /*
 86             //HttpContext
 87             var id = Context.Items["Id"];
 88             */
 89 
 90             /*
 91             //Cookies
 92             var id = Request.Cookies["Id"].Value;
 93             */
 94 
 95             /*
 96             //Cache
 97             var id = Cache["Id"];
 98              */
 99             string id = null;
100             using (var _reader = new StreamReader(Server.MapPath("a.txt")))
101             {
102                 id = _reader.ReadToEnd();
103                 _reader.Close();
104             }
105             Response.Write(id);
106         }
107     }
108 }