如何将特定文件的资源管理器窗口设置为TopMost窗体的子窗口？

using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Windows.Forms;

namespace TopMostFileManager
{
    public partial class TopMostForm : Form
    {
        // 导入user32.dll库中的相关函数
        [DllImport("user32.dll")]
        private static extern IntPtr SetParent(IntPtr hWndChild, IntPtr hWndNewParent);

        [DllImport("user32.dll")]
        private static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int X, int Y, int cx, int cy, uint uFlags);

        private const uint SWP_NOSIZE = 0x0001;
        private const uint SWP_NOZORDER = 0x0004;

        public TopMostForm()
        {
            InitializeComponent();
        }

        private void TopMostForm_Load(object sender, EventArgs e)
        {
            // 启动资源管理器并获取句柄
            Process process = Process.Start("explorer.exe", "C:\\Path\\To\\Specific\\File");
            IntPtr handle = process.MainWindowHandle;

            // 将资源管理器窗口设置为子窗口
            SetParent(handle, this.Handle);

            // 将资源管理器窗口置于其他窗口之上
            SetWindowPos(handle, new IntPtr(-1), 0, 0, 0, 0, SWP_NOSIZE | SWP_NOZORDER);
        }
    }
}