VB.NET LinkLabel.LinkClicked事件代碼示例

' 導入命名空間
Imports System.Drawing
Imports System.Windows.Forms

Public NotInheritable Class Form1
    Inherits System.Windows.Forms.Form

    Friend WithEvents LinkLabel1 As System.Windows.Forms.LinkLabel

    <System.STAThread()> _
    Public Shared Sub Main()
        System.Windows.Forms.Application.Run(New Form1)
    End Sub

    Public Sub New()
        MyBase.New()

        ' Create the LinkLabel.
        Me.LinkLabel1 = New System.Windows.Forms.LinkLabel

        ' Configure the LinkLabel's location.
        Me.LinkLabel1.Location = New System.Drawing.Point(34, 56)
        ' Specify that the size should be automatically determined by the content.
        Me.LinkLabel1.AutoSize = True

        ' Set the text for the LinkLabel.
        Me.LinkLabel1.Text = "Visit Microsoft"

        ' Set up how the form should be displayed and adds the controls to the form.
        Me.ClientSize = New System.Drawing.Size(292, 266)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.LinkLabel1})
        Me.Text = "Simple Link Label Example"
    End Sub

    Private Sub linkLabel1_LinkClicked(ByVal sender As Object, _
        ByVal e As System.Windows.Forms.LinkLabelLinkClickedEventArgs) Handles LinkLabel1.LinkClicked

        ' Specify that the link was visited.
        Me.LinkLabel1.LinkVisited = True

        ' Navigate to a URL.
        System.Diagnostics.Process.Start("http://www.microsoft.com")
    End Sub
End Class

' 導入命名空間
Imports System.Drawing
Imports System.Windows.Forms

Public NotInheritable Class Form1
    Inherits System.Windows.Forms.Form

    Friend WithEvents LinkLabel1 As System.Windows.Forms.LinkLabel

    <System.STAThread()> _
    Public Shared Sub Main()
        System.Windows.Forms.Application.Run(New Form1)
    End Sub

    Public Sub New()
        MyBase.New()


        Me.LinkLabel1 = New System.Windows.Forms.LinkLabel

        ' Configure the LinkLabel's size and location. Specify that the
        ' size should be automatically determined by the content.
        Me.linkLabel1.Location = New System.Drawing.Point(34, 56) 
        Me.linkLabel1.Size = New System.Drawing.Size(224, 16) 
        Me.linkLabel1.AutoSize = True 

        ' Configure the appearance.
        ' Set the DisabledLinkColor so that a disabled link will show up against the form's background.
        Me.linkLabel1.DisabledLinkColor = System.Drawing.Color.Red 
        Me.linkLabel1.VisitedLinkColor = System.Drawing.Color.Blue 
        Me.linkLabel1.LinkBehavior = System.Windows.Forms.LinkBehavior.HoverUnderline 
        Me.linkLabel1.LinkColor = System.Drawing.Color.Navy 
        
        Me.linkLabel1.TabIndex = 0 
        Me.linkLabel1.TabStop = True 
        
        ' Identify what the first Link is.
        Me.linkLabel1.LinkArea = New System.Windows.Forms.LinkArea(0, 8)

        ' Identify that the first link is visited already.
        Me.linkLabel1.Links(0).Visited = true
        
        ' Set the Text property to a string.
        Me.linkLabel1.Text = "Register Online.  Visit Microsoft.  Visit MSN."

        ' Create new links using the Add method of the LinkCollection class.
        ' Underline the appropriate words in the LinkLabel's Text property.
        ' The words 'Register', 'Microsoft', and 'MSN' will 
        ' all be underlined and behave as hyperlinks.

        ' First check that the Text property is long enough to accommodate
        ' the desired hyperlinked areas.  If it's not, don't add hyperlinks.
        If Me.LinkLabel1.Text.Length >= 45 Then
            Me.LinkLabel1.Links(0).LinkData = "Register"
            Me.LinkLabel1.Links.Add(24, 9, "www.microsoft.com")
            Me.LinkLabel1.Links.Add(42, 3, "www.msn.com")
            ' The second link is disabled and will appear as red.
            Me.linkLabel1.Links(1).Enabled = False
        End If

        ' Set up how the form should be displayed and adds the controls to the form.
        Me.ClientSize = New System.Drawing.Size(292, 266)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.LinkLabel1})
        Me.Text = "Link Label Example"
    End Sub

    Private Sub linkLabel1_LinkClicked(ByVal sender As Object, _
                ByVal e As System.Windows.Forms.LinkLabelLinkClickedEventArgs) Handles LinkLabel1.LinkClicked

        ' Determine which link was clicked within the LinkLabel.
        Me.LinkLabel1.Links(LinkLabel1.Links.IndexOf(e.Link)).Visited = True

        ' Displays the appropriate link based on the value of the LinkData property of the Link object.
        Dim target As String = CType(e.Link.LinkData, String)

        ' If the value looks like a URL, navigate to it.
        ' Otherwise, display it in a message box.
        If (target IsNot Nothing) AndAlso (target.StartsWith("www")) Then
            System.Diagnostics.Process.Start(target)
        Else
            MessageBox.Show(("Item clicked: " + target))
        End If

    End Sub

End Class

' 導入命名空間
Imports System
Imports System.Windows.Forms


Public Class MainClass
    
    Shared Sub Main()
        Dim form1 As Form = New Form1

        Application.Run(form1)


    End Sub
End Class

Public Class Form1
    Inherits System.Windows.Forms.Form

#Region " Windows Form Designer generated code "

    Public Sub New()
        MyBase.New()

        'This call is required by the Windows Form Designer.
        InitializeComponent()

        'Add any initialization after the InitializeComponent() call

    End Sub

    'Form overrides dispose to clean up the component list.
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub

    'Required by the Windows Form Designer
    Private components As System.ComponentModel.IContainer

    'NOTE: The following procedure is required by the Windows Form Designer
    'It can be modified using the Windows Form Designer.  
    'Do not modify it using the code editor.
    Friend WithEvents lnkBuy As System.Windows.Forms.LinkLabel
    Friend WithEvents lnkWebSite As System.Windows.Forms.LinkLabel
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.lnkBuy = New System.Windows.Forms.LinkLabel()
        Me.lnkWebSite = New System.Windows.Forms.LinkLabel()
        Me.SuspendLayout()
        '
        'lnkBuy
        '
        Me.lnkBuy.Font = New System.Drawing.Font("Tahoma", 8.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.lnkBuy.LinkArea = New System.Windows.Forms.LinkArea(0, 0)
        Me.lnkBuy.Location = New System.Drawing.Point(16, 60)
        Me.lnkBuy.Name = "lnkBuy"
        Me.lnkBuy.Size = New System.Drawing.Size(244, 48)
        Me.lnkBuy.TabIndex = 3
        Me.lnkBuy.Text = "www.java2s.com"
        '
        'lnkWebSite
        '
        Me.lnkWebSite.Font = New System.Drawing.Font("Tahoma", 8.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.lnkWebSite.LinkArea = New System.Windows.Forms.LinkArea(0, 0)
        Me.lnkWebSite.Location = New System.Drawing.Point(16, 16)
        Me.lnkWebSite.Name = "lnkWebSite"
        Me.lnkWebSite.Size = New System.Drawing.Size(248, 36)
        Me.lnkWebSite.TabIndex = 2
        Me.lnkWebSite.Text = "The whole line is a LinkLabel"
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(292, 150)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.lnkBuy, Me.lnkWebSite})
        Me.Name = "Form1"
        Me.Text = "Link Examples"
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private Sub lnkBuy_LinkClicked(ByVal sender As Object, _
      ByVal e As LinkLabelLinkClickedEventArgs) Handles lnkBuy.LinkClicked, _
      lnkWebSite.LinkClicked

        e.Link.Visited = True
        System.Diagnostics.Process.Start(CType(e.Link.LinkData, String))
    End Sub

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        lnkBuy.Links.Add(0, 2, "http://www.java2s.com")
        lnkBuy.Links.Add(6, 10, "http://www.java2s.com")
        lnkWebSite.Links.Add(0, 10, "http://www.java2s.com")
    End Sub
End Class