[英]access denied error when writing into a file in appData folder using c#
我在C#中有一個桌面應用程序,它將數據存儲在XML文件中。 當應用程序安裝在“ Program Files”文件夾中時,其XML文件將轉到AppData(CommonApplicationData)文件夾中的文件夾。 從此文件讀取時沒有問題,但是在寫入文件時會進入對拒絕路徑的異常訪問 。 當文件位於除C:以外的其他驅動器中時,讀寫沒有問題。
下面是一個使目標路徑具有完全控制權限的類:
public string ApplicationFolderPath
{
get { return Path.Combine(CompanyFolderPath, applicationFolder); }
}
/// <summary>
/// Gets the path of the company's data folder.
/// </summary>
public string CompanyFolderPath
{
get { return Path.Combine(directory, companyFolder); }
}
private string applicationFolder;
private string companyFolder;
private static readonly string directory =
Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData);
private void CreateFolders(bool allUsers)
{
DirectoryInfo directoryInfo;
DirectorySecurity directorySecurity;
AccessRule rule;
SecurityIdentifier securityIdentifier = new SecurityIdentifier
(WellKnownSidType.BuiltinUsersSid, null);
if (!Directory.Exists(CompanyFolderPath))
{
directoryInfo = Directory.CreateDirectory(CompanyFolderPath);
bool modified;
directorySecurity = directoryInfo.GetAccessControl();
MessageBox.Show(directory.ToString());
rule = new FileSystemAccessRule(
securityIdentifier,
FileSystemRights.FullControl,
AccessControlType.Allow);
directorySecurity.ModifyAccessRule(AccessControlModification.Add, rule, out modified);
directoryInfo.SetAccessControl(directorySecurity);
}
if (!Directory.Exists(ApplicationFolderPath))
{
directoryInfo = Directory.CreateDirectory(ApplicationFolderPath);
if (allUsers)
{
bool modified;
directorySecurity = directoryInfo.GetAccessControl();
rule = new FileSystemAccessRule(
securityIdentifier,
FileSystemRights.Write |
FileSystemRights.ReadAndExecute |
FileSystemRights.Modify,
InheritanceFlags.ContainerInherit |
InheritanceFlags.ObjectInherit,
PropagationFlags.InheritOnly,
AccessControlType.Allow);
directorySecurity.ModifyAccessRule(AccessControlModification.Add, rule, out modified);
directoryInfo.SetAccessControl(directorySecurity);
}
}
}
/// <summary>
/// Returns the path of the application's data folder.
/// </summary>
/// <returns>The path of the application's data folder.</returns>
public override string ToString()
{
return ApplicationFolderPath;
}
現在在這里使用上面的類(CommonApplicationData)創建目標路徑:
string _word, _path = new CommonApplicationData("Katek", "RemindWord", true).ToString() + @"\Words.xml", _description;
用戶如何寫入文件?
問題在於file屬性(hidden) ,我已經將該文件隱藏了,以防止用戶意外刪除它(因為它就像應用程序的數據庫文件一樣,因此是一個至關重要的文件),但是在不隱藏的情況下對文件的讀寫沒有問題。 感謝您的全部貢獻。
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