Sample Code - How to call eachother between WinForm and WebView2

[C#] How to call eachother between WinForm and WebView2

//C# -----------------------------------------------

	[System.Security.Permissions.PermissionSet(System.Security.Permissions.SecurityAction.Demand, Name = "FullTrust")]
	[System.Runtime.InteropServices.ComVisibleAttribute(true)]
	public partial class Form1 : Form
	{
		public Form1()
		{
			InitializeComponent();
			webView.CoreWebView2Ready += WebView_CoreWebView2Ready;
		}

		private void WebView_CoreWebView2Ready(object sender, EventArgs e)
		{
			webView.CoreWebView2.NavigationCompleted += CoreWebView2_NavigationCompleted;
			webView.CoreWebView2.AddHostObjectToScript("MyWinForm", this);

			string url = string.Format("file://{0}", Path.Combine(Application.StartupPath, "../../sample.html"));
			webView.Source = new Uri(url);
		}

		private void CoreWebView2_NavigationCompleted(object sender, Microsoft.Web.WebView2.Core.CoreWebView2NavigationCompletedEventArgs e)
		{
		}

		// // Javascript -> WinForm
		public void FunctionFromHTML(string s)
		{
			MessageBox.Show(s);
		}

		// Winform -> Javascript
		private void CallJavascriptFunction()
		{
			webView.CoreWebView2.ExecuteScriptAsync("FunctionFromWinForm('Called From WinForm');");
		}
		private void button_call_javascript_function_Click(object sender, EventArgs e)
		{
			CallJavascriptFunction();
		}
	}



//HTML -----------------------------------------

<!DOCTYPE html>

<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="utf-8" />
    <title></title>
    <script>

		// Winform -> Javascript
		function FunctionFromWinForm(v) {
			alert(v);
		}

		//Javascript -> WinForm
		function CallWinFormFunction() {
			window.chrome.webview.hostObjects.sync.MyWinForm.FunctionFromHTML('Called From WebView2');
		}
    </script>
</head>
<body>
     <button onclick="CallWinFormFunction()">Call WinForm's Function</button>
</body>
</html>