WebBrowser在C#中的应用

最新推荐文章于 2025-08-13 15:08:32 发布

翻译最新推荐文章于 2025-08-13 15:08:32 发布 · 1.7k 阅读

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#webbrowser #c# #object #null #javascript #function

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本文介绍如何使用C#与WebBrowser控件进行交互，包括接收JavaScript返回的数组、读写变量值及调用JavaScript方法。通过具体代码示例展示了如何设置表单值并触发按钮点击事件。

如何接收Javascript返回的数组

this.webBrowser1.DocumentText = @" ";

object values = this.webBrowser1.Document.InvokeScript("GetValues", null);

foreach (object value in (IEnumerable)values)

{

MessageBox.Show(value.ToString());

}

mshtml.IHTMLDocument2 doc = (mshtml.IHTMLDocument2)axWebBrowser1.Document;
mshtml.IHTMLWindow2 win = (mshtml.IHTMLWindow2)doc.parentWindow;
//读变量值
object o = win.GetType().InvokeMember ("var1", BindingFlags.GetProperty, null, win, new Object [] {});
//写变量值
win.GetType().InvokeMember ("var1", BindingFlags.SetProperty, null, win, new Object [] {"新的值"});
//调用方法
win.GetType().InvokeMember("testx",BindingFlags.InvokeMethod,null,win,new object[]{1});

HtmlDocument doc = this.webBrowser1.Document;
doc.GetElementById("kw").InnerText = "test";
doc.GetElementById("btn").InvokeMember("click");

项目中添加Micrsoft.mshtml引用
private void webBrowser1_Navigated(object sender, WebBrowserNavigatedEventArgs e)
{
IHTMLDocument2 vDocument = (IHTMLDocument2)webBrowser1.Document.DomDocument;
vDocument.parentWindow.execScript(
"function alert(str){if(str=='zswang')confirm(str);}", "javaScript");
}

HtmlElement btnSubmit = webBrowser.Document.All["submitbutton"];
HtmlElement tbUserid = webBrowser.Document.All["username"];
tmlElement tbPasswd = webBrowser.Document.All["password"];
if (tbUserid == null || tbPasswd == null || btnSubmit == null)
return;

tbUserid.SetAttribute("value", "smalldust");
tbPasswd.SetAttribute("value", "12345678");
btnSubmit.InvokeMember("click");