原文地址：https://my.oschina.net/Tsybius2014/blog/643909
场景1：C#程序调用JS函数刷新网页，输出再见两字；测试目标：C#调用JS函数
场景2：C#程序调用JS函数刷新网页，输出文字为用户输入的文字；测试目标：C#调用带参数的JS函数
场景3：C#程序调用JS函数获取今日的年月日信息（yyyy-MM-dd）；测试目标：C#能否正确接收JS函数返回值
场景4：JS调用C#函数，输出上面↑↑↑（指bulletin）的文字内容；测试目标：JS调用C#应用程序中带参数的函数
场景5：JS调用C#函数，将左侧输入框中的内容转大写后放到右侧输入框中；测试目标：JS调用C#应用程序中带参数的函数并接收返回值
winform程序
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace WebBrowserJsTest
{
[System.Runtime.InteropServices.ComVisible(true)]
public partial class FormMain : Form
{
public FormMain()
{
InitializeComponent();
}
/// <summary>Load函数</summary>
///<param name="sender"></param>
///<param name="e"></param>
private void FormMain_Load(object sender, EventArgs e)
{
try {
string path = Environment.CurrentDirectory + "\\WebBrowserJsTest.html";
webBrowser.Navigate(path);
webBrowser.ObjectForScripting = this;
} catch(Exception ex) {
MessageBox.Show(ex.ToString());
}
}
/// <summary>测试1</summary>
/// /// <param name="sender"></param>
/// /// <param name="e"></param>
private void btn4Test1_Click(object sender, EventArgs e)
{
webBrowser.Document.InvokeScript("sayGoodBye", null);
}
/// <summary>测试2</summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btn4Test2_Click(object sender, EventArgs e)
{
webBrowser.Document.InvokeScript("changeBulletin", new object[] {
txt4Test2.Text
});
}
/// <summary>测试3</summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btn4Test3_Click(object sender, EventArgs e)
{
object obj = webBrowser.Document.InvokeScript("getTodaysDate", null);
MessageBox.Show(obj.ToString());
}
/// <summary>测试4</summary>
/// <param name="word"></param>
public void ShowBulletin(string word)
{
MessageBox.Show(word);
}
/// <summary>测试5</summary>
/// <param name="word"></param>
/// <returns></returns>
public string ToUpper(string word)
{
return word.ToUpper();
}
}
}
html代码
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta charset="utf-8" />
<title></title>
</head>
<body>
这是一个测试用的页面
<hr /> ========输出都写在这里========
<div id="bulletin">
你好
</div>
<hr /> 测试4：JS调用C#函数，输出上面↑↑↑的文字内容
<br /> 测试目标：JS调用C#应用程序中带参数的函数
<br />
<input type="button" id="showBulletin" value="调用C#1" onclick="showBulletin();" />
<hr /> 测试5：JS调用C#函数，将左侧输入框中的内容转大写后放到右侧输入框中
<br /> 测试目标：JS调用C#应用程序中带参数的函数并接收返回值
<br />
<input type="text" id="inputValue" />
<input type="button" id="toUpper" value="调用C#2" onclick="toUpper();" />
<input type="text" id="returnValue" />
<script>
//测试1
function sayGoodBye() {
document.getElementById("bulletin").innerHTML = "再见";
}
//测试2
function changeBulletin(word) {
document.getElementById("bulletin").innerHTML = word;
}
//测试3
function prefixInteger(num, n) {
return (Array(n).join(0) + num).slice(-n);
}
function getTodaysDate() {
var dateNow = new Date();
var year = dateNow.getFullYear();
var month = (dateNow.getMonth() + 1);
var day = dateNow.getDate();
return year + "-" + prefixInteger(month, 2) + "-" + prefixInteger(day, 2);
}
//测试4
function showBulletin() {
var word = document.getElementById("bulletin").innerHTML;
window.external.ShowBulletin(word);
}
//测试5
function toUpper() {
var word = document.getElementById("inputValue").value;
var ret = window.external.ToUpper(word);
document.getElementById("returnValue").value = ret;
}
</script>
</body>
</html>