1. 先看下webformviewengine的构造函数：
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public WebFormViewEngine()
{
base.MasterLocationFormats = new string[] { "~/Views/{1}/{0}.master", "~/Views/Shared/{0}.master" };
base.ViewLocationFormats = new string[] { "~/Views/{1}/{0}.aspx", "~/Views/{1}/{0}.ascx", "~/Views/Shared/{0}.aspx", "~/Views/Shared/{0}.ascx" };
base.PartialViewLocationFormats = base.ViewLocationFormats;
}
{
base.MasterLocationFormats = new string[] { "~/Views/{1}/{0}.master", "~/Views/Shared/{0}.master" };
base.ViewLocationFormats = new string[] { "~/Views/{1}/{0}.aspx", "~/Views/{1}/{0}.ascx", "~/Views/Shared/{0}.aspx", "~/Views/Shared/{0}.ascx" };
base.PartialViewLocationFormats = base.ViewLocationFormats;
}