@using (Html.BeginForm())动态传参

 @using (Html.BeginForm("Register", "Account", new { sourceType = Request.QueryString["sourceType"] },FormMethod.Post))

http://localhost:7294/ccount/Register?sourceType=1

则获取sourceType=1

视图页面直接获取url get传值，

1.@Request.QueryString["look"]

2.@ViewContext.RequestContext.HttpContext.Request.Params["look"]

参考：https://www.cnblogs.com/firstcsharp/p/3238321.html

https://www.cnblogs.com/zinan/p/6479417.html