C#通过html调用WinForm的方法

2019-12-30 12:15:10王冬梅
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本文实例讲述了C#通过html调用WinForm的方法。,具体如下:

完整测试代码:

Form1.cs:


using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace test
{
  [System.Runtime.InteropServices.ComVisibleAttribute(true)]
  public partial class Form1 : Form
  {
    public Form1()
    {
      InitializeComponent();
    }
    private void Form1_Load(object sender, EventArgs e)
    {
      System.IO.FileInfo file = new System.IO.FileInfo(Application.StartupPath+@"test1.htm");
      webBrowser1.Url = new Uri(file.FullName);
      webBrowser1.ObjectForScripting = this;
    }
    private void button1_Click(object sender, EventArgs e)
    {
      object[] objects = new object[1];
      objects[0]="C#访问javascript脚本";
      webBrowser1.Document.InvokeScript("messageBox", objects);
    }
    public void MyMessageBox(string message)
    {
      MessageBox.Show(message);
    }
  }
}

类WinOper:


[System.Runtime.InteropServices.ComVisibleAttribute(true)]
  public class WinOperationClass
  {
    public void MyMessageBox1()
    {
      MessageBox.Show(message);
    }
    public void ShowForm()
    {
      Form2 f2 = new Form2();
      f2.WindowState = FormWindowState.Normal;
      f2.Show();
    }
  }

网页:


<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
  <head>
    <title></title>
    <script language="javascript" type="text/javascript">
      function messageBox(message)
      {
        alert(message);
      }
    </script>
  </head>
  <body>
    <button onclick="window.external.MyMessageBox('javascript访问C#代码')">javascript访问C#代码</button>
      <a href="javascript:window.external.MyMessageBox1()">javascript访问C#代码</a>
    <a href="javascript:window.external.ShowForm()">javascript访问C#代码</a>
  </body>
</html>

补充:


webBrowser1.ObjectForScripting = this;

这句话的意思是webBrowser1的脚本执行的Com绑定的方法是 从Form1 来的,而MyMessageBox1和ShowForm却是在WinOperationClass类里面的,肯定是不行的。