public class Utils
    {
        /// <summary>
        /// 获取Post值
        /// </summary>
        /// <typeparam name="T">返回类型</typeparam>
        /// <param name="key">键</param>
        /// <returns></returns>
        public static T Form<T>(string key)
        {
            object obj = HttpContext.Current.Request.Form[key];
            if (obj == null || string.IsNullOrEmpty(obj.ToString()))
                return default(T);
            return (T)Convert.ChangeType(obj, typeof(T));
        }
    }

public class HomeController : Controller
    {
        public ActionResult Index()
        {
           string name =Utils.Form<string>("name");
           return View(name);
        }
    }