web程式設計(4)….頁面間參數傳遞

一:用過的:

(1)通過URL連結地址傳遞 (加?..多個參數時加&para2=value中間不能有空格如href="receive.aspx?username=honge&pwd=123")

send.aspx:
        //或者頁面<a href="receive.aspx?username=honge"></a>
        protected void Button1_Click(object sender, EventArgs e)
        {     Request.Redirect("receive.aspx?username=honge"); }
receive.aspx:
            string username = Request.QueryString["username"];這樣可以得到參數值。
ps1:傳遞的參數預設都是string類型,所以不必加引號,也不必類型轉換後傳遞,在接收方為string類型.<漢字除外>

ps2:當傳遞多個參數時,用&隔開,注意不能有空格

ps3:當傳遞漢字時,常常先進行類型轉換, System.Web.HttpUtility.UrlEncode("你好!");

(2) 通過session
send.aspx:
        protected void Button1_Click(object sender, EventArgs e)
        { Session["username"] = "honge"; Request.Redirect("Default2.aspx"); }
receive.aspx:
         string username = Session["username"];     這樣可以得到參數值。

(3)通過cook:

send:
    Request.Cookies.Add(new HttpCookie("cookie_stop2_class","education"));
receive:
    HttpCookie myCook = Request.Cookies["cookie_stop2_class"];
    if(myCook!= null){
        string str =myCook.Value;  //str = education;

    }

 

 

(4)通過Application
send.aspx:
         protected void Button1_Click(object sender, EventArgs e)
         { Application["username"] = "honge"; Request.Redirect("Default2.aspx"); }
receive.aspx: string username = Application["username"];這樣可以得到參數值。

(5)通過Server.Transfer
send.aspx:
         public string Name { get { return "honge"; } }
         protected void Button1_Click(object sender, EventArgs e)
         { Server.Transfer("Default2.aspx"); }
 receive.aspx:
         send d = Context.Handler as send ;
         if (d != null) { Response.Write(d.Name);}