asp.net页面间传值与跳转的区别

HiddenField hfOrderID = new HiddenField();
HiddenField hfPayMOney= new HiddenField();
if (Page.PreviousPage != null)
{
try
{　　
　　　　//
//查找母版页 ,
MasterPage masterPage = (MasterPage)Page.PreviousPage.Controls[0];
//
//查找容器
ContentPlaceHolder cOntentPlaceHolder= (ContentPlaceHolder)masterPage.FindControl("ContentPlaceHolder3");
System.Web.UI.UserControl userCOntrol= (System.Web.UI.UserControl)contentPlaceHolder.FindControl("MyOrder1");
//
//查找到对应的数据传送HiddenField
hfOrderID = (HiddenField)userControl.FindControl("hfOrderID");
hfPayMOney= (HiddenField)userControl.FindControl("hfPayMoney");
　　　 //
//获取传入的订单号
string strOrderID = hfOrderID.Value;
string strPayMOney= hfPayMoney.value;
　　}
}