using System;
using System.Windows.Forms;
using Microsoft.Web.WebView2.Core;
namespace WebView2Demo
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
InitializeWebView();
}
async void InitializeWebView()
{
await webView.EnsureCoreWebView2Async(null);
webView.CoreWebView2.WebMessageReceived += CoreWebView2_WebMessageReceived;
webView.CoreWebView2.Settings.IsWebMessageEnabled = true;
// Load the webpage
webView.Source = new Uri("https://yourwebsite.com");
// Inject JavaScript when page finishes loading
webView.CoreWebView2.NavigationCompleted += (sender, args) =>
{
webView.CoreWebView2.ExecuteScriptAsync(@"
document.getElementById('idt').addEventListener('input', function() {
window.chrome.webview.postMessage(this.value);
});
");
};
}
private void CoreWebView2_WebMessageReceived(object sender, CoreWebView2WebMessageReceivedEventArgs e)
{
string inputValue = e.WebMessageAsJson.Trim('"'); // Extract JSON value
MessageBox.Show("Received Date: " + inputValue);
}
private void buttonTest_Click(object sender, EventArgs e)
{
// Test JavaScript messaging manually
webView.CoreWebView2.ExecuteScriptAsync("window.chrome.webview.postMessage('Test Message');");
}
}
}
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