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VB.NET Web浏览器单击按钮

发布于 2024-10-18 02:38:59 字数 208 浏览 6 评论 0原文

我正在一个小型 VB.NET 项目工作，该项目自动填充雅虎注册页面上的字段。有没有办法点击“检查”按钮来查看输入的ID是否正确？

例如，如果输入的 ID 正确，则继续填写该字段，如果不正确，请尝试另一个 ID，然后再次按“检查”按钮。

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在你怀里撒娇 2024-10-25 02:38:59

Webbrowser 控件允许您访问网页中的元素，并且可以调用它们的方法，因此像这样简单的操作将单击按钮：

webBrowser1.Document.All("yidHelperBtn").InvokeMember("click");

The webbrowser control lets you access elements within the webpage and you can invoke methods on them, so something as simple as this will click the button:

webBrowser1.Document.All("yidHelperBtn").InvokeMember("click");

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薄荷梦 2024-10-25 02:38:59

向您的应用程序添加一个定时器，间隔为 1000 毫秒。下面是代码：

Dim CheckButton, yahooId As HtmlElement
Private Sub WebBrowser1_DocumentCompleted(ByVal sender As System.Object, ByVal e As System.Windows.Forms.WebBrowserDocumentCompletedEventArgs) _

Handles WebBrowser1.DocumentCompleted

    yahooId = WebBrowser1.Document.GetElementById("yahooid")
    CheckButton = WebBrowser1.Document.GetElementById("yidHelperBtn")

    yahooId.InnerText = "testID" 'Replace testID by the ID you want

    Timer1.Start() 'Starts the timer: within 1000 ms (1 s). It will execute the Timer1_Tick sub.

End Sub

Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
    CheckButton.Focus() 'Give the check button the focus
    SendKeys.Send("{ENTER}") 'Causes the validation of the check button
    Timer1.Stop() 'Stops the timer 
End Sub

我添加了一个计时器，因为浏览器在 WebBrowser1_DocumentCompleted 方法中似乎没有验证 Enter 键。

通过这段代码，你可以知道你输入的id是否正确。它并不完整，但它是一个好的开始，尝试理解它并根据您的需求进行调整。

Add a timer to your application, with an interval of 1000 ms. Here is the code:

Dim CheckButton, yahooId As HtmlElement
Private Sub WebBrowser1_DocumentCompleted(ByVal sender As System.Object, ByVal e As System.Windows.Forms.WebBrowserDocumentCompletedEventArgs) _

Handles WebBrowser1.DocumentCompleted

    yahooId = WebBrowser1.Document.GetElementById("yahooid")
    CheckButton = WebBrowser1.Document.GetElementById("yidHelperBtn")

    yahooId.InnerText = "testID" 'Replace testID by the ID you want

    Timer1.Start() 'Starts the timer: within 1000 ms (1 s). It will execute the Timer1_Tick sub.

End Sub

Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
    CheckButton.Focus() 'Give the check button the focus
    SendKeys.Send("{ENTER}") 'Causes the validation of the check button
    Timer1.Stop() 'Stops the timer 
End Sub

I added a timer because the browser doesn't seem to validate the Enter key while in the WebBrowser1_DocumentCompleted method.

With this code, you can know if the id you entered is OK or not. It is not complete, but it's a good beginning, try to understand and adapt it for your needs.

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