C#修改文件或文件夹的权限，为指定用户、用户组添加完全控制权限

本文介绍如何使用C#为指定的Excel文件及其所在目录添加Everyone和Users用户组的完全控制权限。通过具体代码示例展示了如何操作文件和目录的安全属性。

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转自：http://blog.youkuaiyun.com/testcs_dn/article/details/25513747

            //给Excel文件添加"Everyone,Users"用户组的完全控制权限
            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文件所在目录添加"Everyone,Users"用户组的完全控制权限
            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);