System.InvalidOperationException: 未能映射路径“/file/5.24.rar”。未能映射路径“/file/5.24.rar”。 
说明: 执行当前 Web 请求期间,出现未处理的异常。请检查堆栈跟踪信息,以了解有关该错误以及代码中导致错误的出处的详细信息。 异常详细信息: System.InvalidOperationException: 未能映射路径“/file/5.24.rar”。源错误: 
行 52:             return;
行 53:         }
行 54:         this.FileUpload1.PostedFile.SaveAs(Server.MapPath(path));
行 55: 
行 56:     }
 源文件: e:\网站练习\llwg\Default.aspx.cs    行: 54 堆栈跟踪: 
[InvalidOperationException: 未能映射路径“/file/5.24.rar”。]
   System.Web.Hosting.HostingEnvironment.MapPathActual(VirtualPath virtualPath, Boolean permitNull) +8870298
   System.Web.Hosting.HostingEnvironment.MapPathInternal(VirtualPath virtualPath) +42
   System.Web.VirtualPath.MapPathInternal() +4
   System.Web.HttpRequest.MapPath(VirtualPath virtualPath, VirtualPath baseVirtualDir, Boolean allowCrossAppMapping) +107
   System.Web.HttpRequest.MapPath(VirtualPath virtualPath) +37
   System.Web.HttpServerUtility.MapPath(String path) +99
   _Default.btnSend_Click(Object sender, EventArgs e) in e:\网站练习\llwg\Default.aspx.cs:54
   System.Web.UI.WebControls.Button.OnClick(EventArgs e) +111
   System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +110
   System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint