一、建立网页
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二、建立Windows应用程序
1. 创建Windows应用程序项目
2. 在Form1窗体中添加WebBrowser控件
3. 在Form1类的上方添加
[System.Runtime.InteropServices.ComVisibleAttribute(true)]
这是为了将该类设置为com可访问。如果不进行该声明将会出错。出错信息如下图所示:
如:
[System.Runtime.InteropServices.ComVisibleAttribute(true)]
public partial class Form1 : Form
4.初始化WebBrowser的Url与ObjectForScripting两个属性。
Url属性:WebBrowser控件显示的网页路径
ObjectForScripting属性:该对象可由显示在WebBrowser控件中的网页所包含的脚本代码访问。
将Url属性设置为需要进行操作的页的URL路径。
JavaScript通过window.external调用C#公开的方法。即由ObjectForScripting属性设置的类的实例中所包含的公共方法。具体设置例子如下:
System.IO.FileInfo file = new System.IO.FileInfo("index.htm");
// WebBrowser控件显示的网页路径
webBrowser1.Url = new Uri(file.FullName);
// 将当前类设置为可由脚本访问
webBrowser1.ObjectForScripting = this;
5.C#调用JavaScript方法
通过WebBrowser类的Document属性中的InvokeScript方法调用当前网页的Javascript方法。如:
// 调用JavaScript的messageBox方法,并传入参数
object[] objects = new object[1];
objects[0] = "C#访问JavaScript脚本";
webBrowser1.Document.InvokeScript("messageBox", objects);
完整代码如下:
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