webview2/Form1.cs

namespace LYKNS_Dubnium
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private async void Form1_Load(object sender, EventArgs e)
        {
            await webView21.EnsureCoreWebView2Async(null);
            webView21.CoreWebView2.Navigate("https://www.lykns.com");
        }

        private void button1_Click(object sender, EventArgs e)
        {
        }

        private void button3_Click(object sender, EventArgs e)
        {
            if (webView21 != null && webView21.CoreWebView2 != null)
            {
                webView21.CoreWebView2.Navigate("https://www.lykns.com");
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            webView21.CoreWebView2.Reload();
        }

        private void button4_Click(object sender, EventArgs e)
        {
            webView21.CoreWebView2.GoBack();
        }
    }
}