當前位置: 首頁>>代碼示例>>VB.NET>>正文


VB.NET HtmlElement.GotFocus事件代碼示例

本文整理匯總了VB.NET中System.Windows.Forms.HtmlElement.GotFocus事件的典型用法代碼示例。如果您正苦於以下問題:VB.NET HtmlElement.GotFocus事件的具體用法?VB.NET HtmlElement.GotFocus怎麽用?VB.NET HtmlElement.GotFocus使用的例子?那麽, 這裏精選的事件代碼示例或許可以為您提供幫助。您也可以進一步了解該事件所在System.Windows.Forms.HtmlElement的用法示例。


在下文中一共展示了HtmlElement.GotFocus事件的1個代碼示例,這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚,您的評價將有助於係統推薦出更棒的VB.NET代碼示例。

示例1: HandleFormFocus

Dim WithEvents TargetFormElement As HtmlElement

Private Sub HandleFormFocus()
    If (WebBrowser1.Document IsNot Nothing) Then
        With WebBrowser1.Document
            If (.Forms.Count > 0) Then
                Dim TargetForm As HtmlElement = .Forms(0)
                Dim SearchCollection As HtmlElementCollection = TargetForm.All.GetElementsByName("text1")
                If (SearchCollection.Count = 1) Then
                    TargetFormElement = SearchCollection(0)
                End If
            End If
        End With
    End If
End Sub

Private Sub TargetFormElement_Focus(ByVal sender As Object, ByVal e As HtmlElementEventArgs)
    Dim TextElement As HtmlElement = e.FromElement
    Dim ElementText As String = TextElement.GetAttribute("value")

    ' Check that this value is at least five characters long.
    If (ElementText.Length < 5) Then
        e.ReturnValue = True
        MessageBox.Show("The entry in the current field must be at least five characters long.")
    End If
End Sub
開發者ID:VB.NET開發者,項目名稱:System.Windows.Forms,代碼行數:26,代碼來源:HtmlElement.GotFocus


注:本文中的System.Windows.Forms.HtmlElement.GotFocus事件示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台,相關代碼片段篩選自各路編程大神貢獻的開源項目,源碼版權歸原作者所有,傳播和使用請參考對應項目的License;未經允許,請勿轉載。