如何删除C#中另一个进程锁定的文件？

using (FileStream fs = new FileStream("file.txt", FileMode.Open, FileAccess.ReadWrite, FileShare.None))
{
    // 在这里操作文件
}

using System;
using System.IO;
using System.Runtime.InteropServices;

class FileLocker
{
    [DllImport("kernel32.dll", SetLastError = true)]
    static extern bool LockFileEx(IntPtr hFile, uint dwFlags, uint dwReserved, uint nNumberOfBytesToLockLow, uint nNumberOfBytesToLockHigh, ref System.Threading.NativeOverlapped lpOverlapped);

    [DllImport("kernel32.dll", SetLastError = true)]
    static extern bool UnlockFileEx(IntPtr hFile, uint dwReserved, uint nNumberOfBytesToUnlockLow, uint nNumberOfBytesToUnlockHigh, ref System.Threading.NativeOverlapped lpOverlapped);

    const uint LOCKFILE_EXCLUSIVE_LOCK = 2;
    const uint LOCKFILE_FAIL_IMMEDIATELY = 1;

    public static void Main()
    {
        FileStream fs = new FileStream("file.txt", FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite);

        System.Threading.NativeOverlapped overlapped = new System.Threading.NativeOverlapped();

        if (LockFileEx(fs.SafeFileHandle.DangerousGetHandle(), LOCKFILE_EXCLUSIVE_LOCK | LOCKFILE_FAIL_IMMEDIATELY, 0, 0, 0, ref overlapped))
        {
            // 在这里操作文件

            UnlockFileEx(fs.SafeFileHandle.DangerousGetHandle(), 0, 0, 0, ref overlapped);
        }

        fs.Close();
    }
}