C#检测并自动注册ocx

using Microsoft.Win32;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WindowsFormsApp4
{
    public partial class Form1 : Form
    {
        [DllImport("st_curve.ocx")]
        public static extern int DllRegisterServer();//注册时用

        [DllImport("st_curve.ocx")]
        public static extern int DllUnregisterServer();//取消注册时用
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            Console.WriteLine(System.IO.Path.GetFullPath(@"st_curve.ocx"));

            RegistryKey rkTest = Registry.ClassesRoot.OpenSubKey(@"CLSID\{315E7F0E-6F9C-41A3-A669-A7E9626D7CA0}\");
            if (rkTest == null)
            {
                int i = DllRegisterServer();
                if (i >= 0)
                {
                    //注册成功!
                    Console.WriteLine("注册成功");
                }
                else
                {
                    //注册失败
                    Console.WriteLine("注册失败");
                }

            }
            else
            {
                Console.WriteLine("已注册");

            }
        }
    }
}