在ASP.NET中，从一个页面到另一个页面，如何实现跨页数据传递呢？

    例如源页面Default.aspx有一个文本框(txtMsg)和一个按钮(btnOK),要求单击按钮时跳转到目标页面Target.aspx，并在目标页面显示txtMsg的文本。

    主要有以下几种方法：

 1. 设置Default.aspx的按钮btnOK的PostBackUrl属性为目标页；

    Target.aspx添加代码：

    protected void Page_Load(object sender, EventArgs e)

    {

        if (PreviousPage != null)

        {

            if (PreviousPage.IsCrossPagePostBack)

            {

                string msg = ((TextBox)PreviousPage.FindControl("txtMsg")).Text;

                Response.Write("这是跨页回发,传递的信息是：" + msg);

            }

        }

    }

  2. 使用Session

     Default.aspx:

         protected void btnOK_Click(object sender, EventArgs e)

         {

            Session["msg"] = txtMsg.Text.Trim();

            Response.Redirect("Target.aspx");

         }

     Target.aspx:

         protected void Page_Load(object sender, EventArgs e)

         {

            if(Session["msg"]!=null)

                Response.Write("这是Session传值,传递的信息是：" + Session["msg"].ToString());

         }

  3. 使用Cookie

     Default.aspx:

         protected void btnOK_Click(object sender, EventArgs e)

         {

            Response.Cookies["msg"].Value = txtMsg.Text.Trim();

            Response.Redirect("Target.aspx");

         }

     Target.aspx:

         protected void Page_Load(object sender, EventArgs e)

         {

            if(Request.Cookies["msg"]!=null)

                Response.Write("这是Cookie传值,传递的信息是：" + Request.Cookies["msg"].Value);

         }

  4. 使用QueryString

     Default.aspx:

         protected void btnOK_Click(object sender, EventArgs e)

         {

            Response.Redirect("Target.aspx?msg="+txtMsg.Text.Trim());

         }

     Target.aspx:

         protected void Page_Load(object sender, EventArgs e)

         {

            if(Request.QueryString["msg"]!=null)

                Response.Write("这是QueryString传值,传递的信息是：" + Request.QueryString["msg"].ToString());

         }

  5. 使用Transfer

     Default.aspx:

         protected void btnOK_Click(object sender, EventArgs e)

         {

            Server.Transfer("Target.aspx");

         }

         public string Msg

         {

            get {   return txtMsg.Text.Trim(); }

         }

     Target.aspx:

         protected void Page_Load(object sender, EventArgs e)

         {

            if (PreviousPage != null)

            {

                _Default f1 = (_Default)Context.Handler;

                if (f1 != null)

                    Response.Write("这是Transfer传值,传递的信息是：" + f1.Msg);

            }

         }

 原文地址 ：