asp:TextBox runat="server" ID="txtName"

asp:Button runat="server" ID="btnSubmit" 
Text="Cross Post Back" PostBackUrl="~/Default2.aspx"

on pageload event of the otherpage
{
   TextBox txtPrevious;
   txtPrevious =(TextBox)Page.PreviousPage.FindControl("txtName");
   lblView.Text = txtPrevious.Text;    
}