本文整理匯總了VB.NET中System.Windows.Forms.BindingSource.MoveFirst方法的典型用法代碼示例。如果您正苦於以下問題：VB.NET BindingSource.MoveFirst方法的具體用法？VB.NET BindingSource.MoveFirst怎麽用？VB.NET BindingSource.MoveFirst使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類System.Windows.Forms.BindingSource的用法示例。
在下文中一共展示了BindingSource.MoveFirst方法的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: Form1_Load
Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs) _
Handles Me.Load
' Set the data source to the Brush type and populate
' BindingSource1 with some brushes.
BindingSource1.DataSource = GetType(System.Drawing.Brush)
BindingSource1.Add(New TextureBrush(New Bitmap(GetType(Button), _
"Button.bmp")))
BindingSource1.Add(New HatchBrush(HatchStyle.Cross, Color.Red))
BindingSource1.Add(New SolidBrush(Color.Blue))
End Sub
Private Sub button1_Click(ByVal sender As Object, ByVal e As EventArgs) _
Handles button1.Click
' If you are not at the end of the list, move to the next item
' in the BindingSource.
If BindingSource1.Position + 1 < BindingSource1.Count Then
BindingSource1.MoveNext()
' Otherwise, move back to the first item.
Else
BindingSource1.MoveFirst()
End If
' Force the form to repaint.
Me.Invalidate()
End Sub
Sub Form1_Paint(ByVal sender As Object, ByVal e As PaintEventArgs)
' Get the current item in the BindingSource.
Dim item As Brush = CType(BindingSource1.Current, Brush)
' If the current type is a TextureBrush, fill an ellipse.
If item.GetType().Equals(GetType(TextureBrush)) Then
e.Graphics.FillEllipse(item, _
e.ClipRectangle)
' If the current type is a HatchBrush, fill a triangle.
ElseIf item.GetType().Equals(GetType(HatchBrush)) Then
e.Graphics.FillPolygon(item, New Point() _
{New Point(0, 0), New Point(0, 200), New Point(200, 0)})
' Otherwise, fill a rectangle.
Else
e.Graphics.FillRectangle(item, e.ClipRectangle)
End If
End Sub