js调用本地调用

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Threading;

namespace WpfApp1
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            JsCallFun jcf = new JsCallFun();
            this.BrowserControl.ObjectForScripting = jcf;
            this.BrowserControl.Navigate(new Uri(System.Environment.CurrentDirectory + @"/html/test.htm", UriKind.RelativeOrAbsolute));
        }
        
    }

    [System.Runtime.InteropServices.ComVisibleAttribute(true)]
    public class JsCallFun
    {
        public string ClickEvent(string str)
        {
            MessageBox.Show("Welcome " + str);
            Thread.Sleep(5000);
            return "imageURL";
        }
    }
}

<Window x:Class="WpfApp1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WpfApp1"
        mc:Ignorable="d"
        Title="MainWindow" Height="768" Width="1024">
    <Grid>
        <WebBrowser Name="BrowserControl"  />
    </Grid>
</Window>

<input type="button" value="测试" onclick="alert(window.external.ClickEvent('Paul.Zhao'));" />

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