protected void Button1_Click(object sender, EventArgs 
e)
        
{
            string a 
= 
Page.Request["ID"];
           
Response.Redirect("dy.ascx?name=a");
           
        }
接收
 protected void Page_Load(object sender, EventArgs 
e)
        
{
            
Label1.Text = Request.QueryString["name"];
}
或者
    protected void Button1_Click(object sender, EventArgs 
e)
        
{
           Session["id"] 
= 
Page.Request["ID"];
           
Response.Redirect("dy.ascx");
           
        }
接收
  protected void Page_Load(object sender, EventArgs 
e)
        
{
                       
            
Session["id"] = 
Label1.Text.ToString();
        
}
原文:http://www.cnblogs.com/914556495wxkj/p/3600426.html