奇怪的现象！！！！

[longling520]

今天我做了一个页面传值的网页，如下
Default.aspx页面：

当按下前四个按钮时会报错：无法将类型为“ASP.receive__aspx”的对象强制转换为类型“_Default”。
只按第五个按钮时不会报错，或者注释掉第五按钮的内容，再按前面四个按钮也不会报错，不知道为什么？希望各位帮我看看，谢谢！

Default.aspx代码：

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        // Value sent using HttpResponse
        Response.Redirect("receive .aspx?Name=" + txtName.Text);

    }

    protected void Button2_Click(object sender, EventArgs e)
    {
        HttpCookie cName = new HttpCookie("Name");
        cName.Value = txtName.Text;
        Response.Cookies.Add(cName);
        Response.Redirect("receive .aspx");
    }
   
    protected void Button3_Click(object sender, EventArgs e)
    {
        Session["Name"] = txtName.Text;
        Response.Redirect("receive .aspx");
    }

    protected void Button4_Click(object sender, EventArgs e)
    {
        Application["Name"] = txtName.Text;
        Response.Redirect("receive .aspx");
    }
    protected void Button5_Click(object sender, EventArgs e)
    {
     
        Server.Transfer("receive .aspx");
    }

    public string GetName
    {
        get
        {
            return txtName.Text;
        }
    }

}

receive.aspx页面代码：

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class receive_ : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (Request.QueryString["Name"] != null)
         Label1.Text = Request.QueryString["Name"];
       
        if (Request.Cookies["Name"] != null)
         Label4.Text = Request.Cookies["Name"].Value;

        // The code below shows how to get the session value.
        // This code must be placed in other page.
        if (Session["Name"] != null)
          Label6.Text = Session["Name"].ToString();

        if (Application["Name"] != null)
          Label8.Text = Application["Name"].ToString();

       // You can declare this Globally or in any event you like
       _Default w;
       // Gets the Page.Context which is Associated with this page 
       w = (_Default)Context.Handler;
       // Assign the Label control with the property "GetName" which returns string
        Label10.Text = w.GetName;
       
    }
}

[我姓区不姓区]

        protected void Page_Load(object sender, EventArgs e)
        {
            if (Request.QueryString["Name"] != null)
                Label1.Text = Request.QueryString["Name"];

            else if (Request.Cookies["Name"] != null)
                Label4.Text = Request.Cookies["Name"].Value;

            // The code below shows how to get the session value.
            // This code must be placed in other page.
            else if (Session["Name"] != null)
                Label6.Text = Session["Name"].ToString();

            else if (Application["Name"] != null)
                Label8.Text = Application["Name"].ToString();

            else if(Context.Handler is _Default)
            {
                // You can declare this Globally or in any event you like
                _Default w;
                // Gets the Page.Context which is Associated with this page 
                w = (_Default)Context.Handler;
                // Assign the Label control with the property "GetName" which returns string
                Label10.Text = w.GetName;
            }
        }

[wndsc]

lu guo

[海倍娜楽]

楼主传参，对参数进行一下URL编码...