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PreviousPage FindControl (C#)

<%@ Page Language="C#" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server">     <title>Untitled Page</title> </head> <body>     <form id="form1" runat="server">     <div>         <asp:TextBox ID="TextBox1" Runat="server"></asp:TextBox>         <asp:Button ID="Button1" Runat="server" Text="Button"              PostBackUrl="~/NextPage.aspx" />     </div>     </form> </body> </html> File: NextPage.aspx <%@ Page Language="C#" AutoEventWireup="true" CodeFile="NextPage.aspx.cs" Inherits="Step2" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server">     <title>Step 2</title> </head> <body>     <form id="form1" runat="server">     <div>         <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label></div>     </form> </body> </html> File: NextPage.aspx.cs 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 Step2 : System.Web.UI.Page {     protected void Page_Load(object sender, EventArgs e)     {         if (PreviousPage != null && PreviousPage.IsCrossPagePostBack)         {             TextBox text = PreviousPage.FindControl("TextBox1") as TextBox;             if (text != null)             {                 Label1.Text = text.Text;             }         }     } }