ASP.NET2.0 的跨页面提交是专门用来向别的页面传值的,例如:
原页面:
<TextBox runat=server id="txtBox1" Text="Testtext">
<asp:button runat=server PostBackUrl="tar.aspx" text="OK">
目标页面:
TextBox tb=(textBox)PreviousePage.FindControl(txtBox1)
valTB = tb.Text;  

ASP.NET1.0方法链接http://www.cnblogs.com/robber/archive/2007/05/03/734955.html