VB.NET Label.ImageIndex屬性代碼示例

Public Sub CreateMyLabel()
    ' Create an instance of a Label.
    Dim label1 As New Label()
       
    ' Set the border to a three-dimensional border.
    label1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
    ' Set the ImageList to use for displaying an image.
    label1.ImageList = imageList1
    ' Use the second image in imageList1.
    label1.ImageIndex = 1
    ' Align the image to the top left corner.
    label1.ImageAlign = ContentAlignment.TopLeft
     
    ' Specify that the text can display mnemonic characters.
    label1.UseMnemonic = True
    ' Set the text of the control and specify a mnemonic character.
    label1.Text = "First &Name:"
       
    ' Set the size of the control based on the PreferredHeight and PreferredWidth values. 
    label1.Size = New Size(label1.PreferredWidth, label1.PreferredHeight)

    '...Code to add the control to the form...
End Sub

imports System
imports System.Drawing
imports System.Windows.Forms

public class ImageLists : inherits Form

  dim imgList as ImageList = new ImageList()
    dim lbl as Label 
    dim lnk as LinkLabel
    dim btn as Button
    dim nmbrUpDown as NumericUpDown

  public sub New()
       Size = new Size(300,300)

    dim img as Image
    dim i as integer

    dim arFiles as string() = {"1.ico","2.ico","3.ico","4.ico"}

    for i = 0 to arFiles.Length - 1
      img = Image.FromFile(arFiles(i))
      imgList.Images.Add(img)
    next

    imgList.ImageSize = new Size(32, 32)

    img = Image.FromFile("5.ico")
    imgList.Images(imgList.Images.Count - 1) = img

       lbl = new Label()
       lbl.Parent = me
       lbl.Text = "Label"
       lbl.Location = new Point(0,0)
       lbl.Size = new Size (200,20)
       lbl.BorderStyle = BorderStyle.Fixed3D
    lbl.ImageList = imgList
    lbl.ImageIndex = 0
    lbl.ImageAlign = ContentAlignment.MiddleRight

    '  Create numeric updown to select the image
    nmbrUpDown = new NumericUpDown()
    nmbrUpDown.Parent = me
    nmbrUpDown.Location = new Point(0, 60)
    nmbrUpDown.Value = 0
    nmbrUpDown.Minimum = 0
    nmbrUpDown.Maximum = imgList.Images.Count - 1
    nmbrUpDown.Width = 50
    nmbrUpDown.ReadOnly = true
    AddHandler nmbrUpDown.ValueChanged,AddressOf nmbrUpDown_ValueChanged
    end sub

    public shared sub Main() 
      Application.Run(new ImageLists())
    end sub

    private sub nmbrUpDown_ValueChanged(ByVal sender as object,ByVal e as EventArgs)
      dim n as NumericUpDown  = CType(sender, NumericUpDown)
    lbl.ImageIndex = CType(n.Value, Integer)
    end sub
end class