確定DataGridView的水平滾動條是否存在？

Question

Visual Basic 2010，.NET 3.5 有沒有一種方法可以務實地確定DataGridView的水平滾動條是活動的還是可見的？我需要移動有關DGV水平滾動條何時開啓的一些項目。

Answer 1

只給你一個想法（我沒有時間，現在，還是在我的面前視覺工作室）：

For Each c In DataGridView1.Controls 
     If c.GetType() Is GetType(VScrollBar) Then 
      Dim vbar as VScrollBar= DirectCast(c, VScrollBar) 
      If vbar.Visible = True Then 
       'Do whatever you like 
      End If 
     End If 
    Next 

Answer 2

試試這個：

dgvYourDataGridView.Controls.OfType(Of HScrollBar).SingleOrDefault.Visible

Answer 3

這裏是VB .Net版提升事件時滾動條的可見性發生變化，從How to detect the vertical scrollbar in a DataGridView control

Public Class MyGrid 
    Inherits DataGridView 

    Public Event ScrollbarVisibleChanged As EventHandler 

    Public Sub New() 
    AddHandler Me.HorizontalScrollBar.VisibleChanged, _ 
       AddressOf HorizontalScrollBar_VisibleChanged 
    End Sub 

    Public ReadOnly Property HorizontalScrollbarVisible() As Boolean 
    Get 
     Return HorizontalScrollBar.Visible 
    End Get 
    End Property 

    Private Sub HorizontalScrollBar_VisibleChanged(sender As Object, e As EventArgs) 
    RaiseEvent ScrollbarVisibleChanged(Me, EventArgs.Empty) 
    End Sub 
End Class 

Answer 4

我拿了Nianios的例子，做了一些調整，並確定滾動條是否可見。謝謝！

Private Function HScrollBarVisible() As Boolean 
    Dim ctrl As New Control 
    For Each ctrl In DataGridView1.Controls 
     If ctrl.GetType() Is GetType(HScrollBar) Then 
      If ctrl.Visible = True Then 
       Return True 
      Else 
       Return False 
      End If 
     End If 
    Next 
    Return Nothing 
End Function