在当前页面.net上提交Web表单后将用户发送回上一页

On a .net site, is there an easy way to send someone back to the last page they were on before they posted back a form on the current page without some sort of overwrought breadcrumb system? I know that sounds a bit confusing, but lets say you're on Page1.aspx. You go to Page2.aspx, which has a web form. You fill out the web form which posts back to itself. After the postback, I want to send them back to whatever page they were on first, in this case : Page1.aspx. Page1.aspx is obviously variable.On a .net site, is there an easy way to send so