如何以编程方式更改.bat文件的图标？

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

public class BatchFileIconChanger
{
    [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    private static extern IntPtr BeginUpdateResource(string pFileName, bool bDeleteExistingResources);

    [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    private static extern bool UpdateResource(IntPtr hUpdate, IntPtr lpType, IntPtr lpName, ushort wLanguage, byte[] lpData, uint cbData);

    [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    private static extern bool EndUpdateResource(IntPtr hUpdate, bool fDiscard);

    private const int RT_ICON = 3;
    private const int RT_GROUP_ICON = 14;

    public static void SetBatchFileIcon(string batchFilePath, string iconFilePath)
    {
        // Load the icon from the icon file
        Icon icon = Icon.ExtractAssociatedIcon(iconFilePath);

        // Convert the icon to a Windows cursor resource
        byte[] cursorData = ConvertIconToCursorData(icon);

        // Begin updating the resources in the batch file
        IntPtr hUpdate = BeginUpdateResource(batchFilePath, false);

        // Update the resources with the new icon data
        UpdateResource(hUpdate, (IntPtr)RT_GROUP_ICON, (IntPtr)1, (ushort)0, cursorData, (uint)cursorData.Length);

        // End the resource update process
        EndUpdateResource(hUpdate, false);
    }

    private static byte[] ConvertIconToCursorData(Icon icon)
    {
        // Convert the icon to a Windows cursor format
        MemoryStream cursorStream = new MemoryStream();
        BinaryWriter cursorWriter = new BinaryWriter(cursorStream);

        // Write the header
        cursorWriter.Write((ushort)0); // Reserved
        cursorWriter.Write((ushort)2); // Resource type (RT_CURSOR)
        cursorWriter.Write((ushort)1); // Number of icons

        // Write the icon data
        icon.Save(cursorWriter);

        // Return the cursor data as a byte array
        return cursorStream.ToArray();
    }
}

BatchFileIconChanger.SetBatchFileIcon("C:\\mybatchfile.bat", "C:\\myicon.ico");