在托管WebBrowser控件的应用程序中，如何在由WebBrowser控件查看的页面中调用JavaScript函数？
[英]How might I call a JavaScript Function in a Page Viewed by a WebBrowser Control from the Application Hosting the WebBrowser Control?
问题描述
I've created a C# Desktop Application which depends on web crawler idea. 
我创建了一个C＃桌面应用程序，该应用程序依赖于Web搜寻器的想法。
I made my application using web browser control to open a website and login progmatically and redirect to the specific page which have a gridview with all user's data that I want to collect... 我使用网络浏览器控件制作了我的应用程序，以打开网站并进行编程登录，然后重定向到具有gridview的特定页面，其中包含我要收集的所有用户数据...
But the issue here username in the gridview click fired by JavaScript function. 但是，这里的问题是JavaScript函数触发了gridview中的用户名。 I know its name but not how to call it inside desktop application. 我知道它的名称，但不知道如何在桌面应用程序中调用它。
What are the namespaces or DLLs that would allow me to do so? 什么是允许我这样做的名称空间或DLL？
2 个解决方案
解决方案1
8 2009-06-24 15:44:42
I think this should help you out: 我认为这应该可以帮助您：
http://www.west-wind.com/WebLog/posts/493536.aspx http://www.west-wind.com/WebLog/posts/493536.aspx
EDIT: Based on that link, here's a small sample app. 编辑：基于该链接，这是一个小示例应用程序。 Add a Button and a WebBrowser control to a Windows Form and add this code: 将按钮和WebBrowser控件添加到Windows窗体，并添加以下代码：
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
this.webBrowser1.DocumentText = @"<html>
<body>
<script type = ""text/javascript"">
function ShowMessage(text) {
alert(text);
}
</script>
</body>
<input type=""button"" onclick=""ShowMessage('From JavaScript')"" value=""Click me""/>
</html>";
}
private void button1_Click(object sender, EventArgs e)
{
this.webBrowser1.Document.InvokeScript("ShowMessage",new object[]{"From C#"});
}
}
If you click the button in the browser, it'll show the javascript message, if you click the button in the windows form, it'll show the C# message. 如果单击浏览器中的按钮，它将显示javascript消息，如果单击Windows窗体中的按钮，则将显示C＃消息。
解决方案2
0 2012-02-10 06:33:20
Have you thought of just using the following to run script on page using WebBrowser control? 您是否考虑过仅使用以下内容通过WebBrowser控件在页面上运行脚本？
' In VB - but easy to convert to C# as its pretty much the same thing :).
Dim sScript As String, sLanguage As String
sLanguage = "JScript"
sScript = "MyJavaScriptToRun();" ' you can run many lines by delimiting them with ;
WebBrowser1.Document.parentWindow.execScript sScript, sLanguage
Let me know how you get along. 让我知道你的相处。 In the .NET versions of the WebBrowser control, there are additional methods to run script, I think there is a .RunScript type method (can't recall exact name but you will notice it once you see it in intellisense). 在.NET版本的WebBrowser控件中，还有其他运行脚本的方法，我认为有一种.RunScript类型的方法（无法记住确切的名称，但是一旦在intellisense中看到它，您就会注意到它）。
Let me know if you have any further questions. 如果您还有其他问题，请告诉我。
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