[PathTooLongException: 指定的(de)路径或(huo)文(wen)件名太长(chang)，或(huo)者两者都(du)太长(chang)。完全限定文(wen)件名必(bi)须少于 260 个字符，并且目录名必(bi)须少于 248 个字符。]
   System.IO.PathHelper.GetFullPathName() +420
   System.IO.Path.LegacyNormalizePath(String path, Boolean fullCheck, Int32 maxPathLength, Boolean expandShortPaths) +1463
   System.IO.Path.NormalizePath(String path, Boolean fullCheck, Int32 maxPathLength, Boolean expandShortPaths) +105
   System.IO.Path.GetFullPathInternal(String path) +110
   System.Security.Util.StringExpressionSet.CanonicalizePath(String path, Boolean needFullPath) +31
   System.Security.Util.StringExpressionSet.CreateListFromExpressions(String[] str, Boolean needFullPath) +245
   System.Security.Permissions.FileIOPermission.AddPathList(FileIOPermissionAccess access, AccessControlActions control, String[] pathListOrig, Boolean checkForDuplicates, Boolean needFullPath, Boolean copyPathList) +89
   System.Security.Permissions.FileIOPermission..ctor(FileIOPermissionAccess access, String path) +63
   System.Web.InternalSecurityPermissions.PathDiscovery(String path) +32
   System.Web.HttpRequest.MapPath(VirtualPath virtualPath, VirtualPath baseVirtualDir, Boolean allowCrossAppMapping) +149
   System.Web.HttpServerUtility.MapPath(String path) +104
   UrlWrite.NIuVukMhL9gEuGyw0e3(Object , Object ) +9
   UrlWrite.ohnN7nND36(Object  , EventArgs  ) +498
   System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +141
   System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +48
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +71