在.NET（VB）中删除字体文件

Question

有谁知道如何删除C：\ Windows \ Font中的字体文件？ 我将当前用户设置为所有者，并将访问规则设置为FullControl，但仍然遇到System.UnauthorizedAccessException异常

        Dim fileS As FileSecurity = touninstall(ui).GetAccessControl
        Dim idref As SecurityIdentifier = fileS.GetOwner(GetType(SecurityIdentifier))
        Dim NTAccount As NTAccount = idref.Translate(GetType(NTAccount))
        Console.WriteLine(NTAccount)

        'Update it, Grant Current User Full Control
        Dim cu As SecurityIdentifier = WindowsIdentity.GetCurrent().User
        NTAccount = cu.Translate(GetType(NTAccount))
        Console.WriteLine(NTAccount)
        fileS.SetOwner(cu)
        fileS.SetAccessRule(New FileSystemAccessRule(cu, FileSystemRights.FullControl, AccessControlType.Allow))

        'Update the Access Control on the File
        touninstall(ui).SetAccessControl(fileS)

        'Delete the file            
        touninstall(ui).Delete()

我正在以管理员身份运行该应用。我认为它与文件夹/文件权限和继承有关，但不是很确定。

由于