如何以编程方式获取.net中的应用程序的GUID

using System;
using System.Diagnostics;
using System.Runtime.InteropServices;

public class Program
{
    [DllImport("kernel32.dll")]
    public static extern IntPtr OpenProcess(int dwDesiredAccess, bool bInheritHandle, int dwProcessId);

    [DllImport("psapi.dll")]
    public static extern int GetModuleFileNameEx(IntPtr hProcess, IntPtr hModule, StringBuilder lpBaseName, int nSize);

    static void Main(string[] args)
    {
        Process currentProcess = Process.GetCurrentProcess();
        IntPtr processHandle = OpenProcess(0x0400 | 0x0010, false, currentProcess.Id);

        StringBuilder path = new StringBuilder(1024);
        GetModuleFileNameEx(processHandle, IntPtr.Zero, path, path.Capacity);

        FileVersionInfo versionInfo = FileVersionInfo.GetVersionInfo(path.ToString());
        string guid = versionInfo.ProductGuid;

        Console.WriteLine("应用程序的GUID：" + guid);
    }
}