C# 访问路径被拒绝异常在 Documents 中创建文件

Question

我正在尝试编写一个 windows 表单应用程序，它将日志写入一个 .txt 文件，位于：

Documents/subfolder/name.txt

我可以使用

创建子文件夹目录

        string documentsPath = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
        string dirPath = Path.Combine(documentsPath, appFolderName, logFolderSubpath);

        if (!Directory.Exists(dirPath))
        {
            Directory.CreateDirectory(dirPath);
        }

        string fileName = "log" + DateTime.Now.ToString("_yyyy-MM-dd_hh-mm-ss") + ".txt";

        string path = Path.Combine(dirPath, fileName);

但是当我尝试创建 StreamWriter 时：

StreamWriter writer = new StreamWriter(Path.Combine(path, filename));

其中文件名只是 .txt 文件的名称，我得到异常：

System.UnauthorizedAccessException
  HResult=0x80070005
  Message=Access to the path 'C:\Users\milos_qhhen\Documents\DNDice\logs\log_2021-04-30_10-30-33.txt' is denied.
  Source=mscorlib
  StackTrace:
   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
   at System.IO.StreamWriter.CreateFile(String path, Boolean append, Boolean checkHost)
   at System.IO.StreamWriter..ctor(String path, Boolean append, Encoding encoding, Int32 bufferSize, Boolean checkHost)
   at System.IO.StreamWriter..ctor(String path)
   at Character_Sheet.Logger..ctor() in D:\Milos\DND\Character Sheet\Character Sheet\Logger.cs:line 35
   at Character_Sheet.MainForm.MainForm_Load(Object sender, EventArgs e) in D:\Milos\DND\Character Sheet\Character Sheet\MainForm.cs:line 57
   at System.Windows.Forms.Form.OnLoad(EventArgs e)
   at System.Windows.Forms.Form.OnCreateControl()
   at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
   at System.Windows.Forms.Control.CreateControl()
   at System.Windows.Forms.Control.WmShowWindow(Message& m)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
   at System.Windows.Forms.Form.WmShowWindow(Message& m)
   at System.Windows.Forms.Form.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

  This exception was originally thrown at this call stack:
    [External Code]
    Character_Sheet.Logger.Logger() in Logger.cs
    Character_Sheet.MainForm.MainForm_Load(object, System.EventArgs) in MainForm.cs
    [External Code]

我试图让我的应用程序将日志文件写入 Documents 目录，因为这是一个将由多人使用的程序，我想要一个可以写入日志的固定位置。所以我需要我的程序能够创建目录，在其中创建文件，然后写入该文件！我不想在 .exe 所在的同一目录中执行此操作。

Answer 1

可能您使用的用户对该文件夹没有写权限。尝试为您的用户添加写入权限，或者只是运行以管理员身份添加 VS。它应该有效

C# 访问路径被拒绝异常在 Documents 中创建文件

C# Access to the path is denied exception creating a file in Documents

c#

streamwriter

access-denied