“/”应用程序中的服务器错误。

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行 38:         }
行 39: 
行 40:         string path = System.Web.HttpContext.Current.Server.MapPath("" + multiLanguage.Dir + "/productimage/Download/big/" + filepath);//path为服务器存放文件的路径
行 41: 
行 42:         filedownload(path, fileshowname);

[ArgumentException: 路径中具有非法字符。]
   System.IO.Path.LegacyNormalizePath(String path, Boolean fullCheck, Int32 maxPathLength, Boolean expandShortPaths) +12940676
   System.IO.Path.NormalizePath(String path, Boolean fullCheck, Int32 maxPathLength, Boolean expandShortPaths) +110
   System.IO.Path.GetFullPathInternal(String path) +119
   System.Security.Util.StringExpressionSet.CanonicalizePath(String path, Boolean needFullPath) +36
   System.Security.Util.StringExpressionSet.CreateListFromExpressions(String[] str, Boolean needFullPath) +304
   System.Security.Permissions.FileIOPermission.AddPathList(FileIOPermissionAccess access, AccessControlActions control, String[] pathListOrig, Boolean checkForDuplicates, Boolean needFullPath, Boolean copyPathList) +92
   System.Security.Permissions.FileIOPermission..ctor(FileIOPermissionAccess access, String path) +67
   System.Web.InternalSecurityPermissions.PathDiscovery(String path) +34
   System.Web.HttpRequest.MapPath(VirtualPath virtualPath, VirtualPath baseVirtualDir, Boolean allowCrossAppMapping) +157
   System.Web.HttpServerUtility.MapPath(String path) +108
   cn_controls_downloading.Page_Load(Object sender, EventArgs e) in d:\wwwroot\siweishsiwi\wwwroot\controls\downloading.ascx.cs:40
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +52
   System.EventHandler.Invoke(Object sender, EventArgs e) +0
   System.Web.UI.Control.OnLoad(EventArgs e) +97
   System.Web.UI.Control.LoadRecursive() +61
   System.Web.UI.Control.LoadRecursive() +134
   System.Web.UI.Control.LoadRecursive() +134
   System.Web.UI.Control.LoadRecursive() +134
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +693