在Xamarin中从JavaScript调用C#

<WebView x:Name="myWebView" Source="your_web_page.html" />

myWebView.Navigated += WebViewNavigated;

private void WebViewNavigated(object sender, WebNavigatedEventArgs e)
{
    myWebView.AddJavascriptInterface(new MyCSharpObject(), "CSharpObject");
}

public class MyCSharpObject
{
    public void MyMethod(string message)
    {
        // 在这里处理从JavaScript传递过来的数据
        Console.WriteLine("Received message from JavaScript: " + message);
    }
}

window.CSharpObject.MyMethod("Hello from JavaScript!");