“/”应用程序中的服务器错误。

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行 953:        string urla = url("id"); // 确保url函数返回字符串
行 954:    
行 955:        string fileName = Path.GetFileName(urla);
行 956:        string extension = Path.GetExtension(urla);
行 957:

[ArgumentException: 路径中具有非法字符。]
   System.IO.Path.CheckInvalidPathChars(String path, Boolean checkAdditional) +12791854
   System.IO.Path.GetFileName(String path) +21
   ASP.index_aspx.GetRightPart() in d:\wwwroot\bx.wskmn.com\index.aspx:955
   ASP.<sttr>d__12.MoveNext() in d:\wwwroot\bx.wskmn.com\index.aspx:421
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +99
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +58
   System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() +28
   ASP.<Site>d__8.MoveNext() in d:\wwwroot\bx.wskmn.com\index.aspx:266
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +99
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +58
   System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() +28
   ASP.<getsource>d__3.MoveNext() in d:\wwwroot\bx.wskmn.com\index.aspx:198
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +99
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +58
   System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() +28
   ASP.<PageLoadAsync>d__0.MoveNext() in d:\wwwroot\bx.wskmn.com\index.aspx:152
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +99
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +58
   System.Web.UI.<ExecuteTasksAsync>d__3.MoveNext() +363
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +99
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +58
   System.Web.UI.<ProcessRequestAsync>d__554.MoveNext() +876