C#修正文件或文件夹的权限，为指定用户、用户组增加完整掌握权限的详细代码引见【C#.Net教程】,C#，控制权限，修改文件

C#修正文件或文件夹的权限，为指定用户、用户组增加完整掌握权限的细致代码引见

//给Excel文件增加"Everyone,Users"用户组的完整掌握权限  
FileInfo fi = new FileInfo(excelPath);  
System.Security.AccessControl.FileSecurity fileSecurity = fi.GetAccessControl();  
fileSecurity.AddAccessRule(new FileSystemAccessRule("Everyone", FileSystemRights.FullControl, AccessControlType.Allow));  
fileSecurity.AddAccessRule(new FileSystemAccessRule("Users", FileSystemRights.FullControl, AccessControlType.Allow));  
fi.SetAccessControl(fileSecurity);  
  
//给Excel文件地点目次增加"Everyone,Users"用户组的完整掌握权限  
DirectoryInfo di = new DirectoryInfo(Path.GetDirectoryName(excelPath));  
System.Security.AccessControl.DirectorySecurity dirSecurity = di.GetAccessControl();  
dirSecurity.AddAccessRule(new FileSystemAccessRule("Everyone", FileSystemRights.FullControl, AccessControlType.Allow));  
dirSecurity.AddAccessRule(new FileSystemAccessRule("Users", FileSystemRights.FullControl, AccessControlType.Allow));  
di.SetAccessControl(dirSecurity);

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