VB.NET WebBrowser.GoBack方法代码示例

' Navigates webBrowser1 to the previous page in the history.
Private Sub backButton_Click( _
    ByVal sender As Object, ByVal e As EventArgs) _
    Handles backButton.Click

    webBrowser1.GoBack()

End Sub

' Disables the Back button at the beginning of the navigation history.
Private Sub webBrowser1_CanGoBackChanged( _
    ByVal sender As Object, ByVal e As EventArgs) _
    Handles webBrowser1.CanGoBackChanged

    backButton.Enabled = webBrowser1.CanGoBack

End Sub

' 导入命名空间
Imports System.Windows.Forms

public class WebBrowserDemo
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class
Public Class Form1

    Private Sub txtURL_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles txtURL.KeyDown
        If (e.KeyCode = Keys.Enter) Then
            WebBrowser1.Navigate(txtURL.Text)
        End If
    End Sub

    Private Sub btnBack_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnBack.Click
        WebBrowser1.GoBack()
    End Sub

    Private Sub btnForward_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnForward.Click
        WebBrowser1.GoForward()
    End Sub

    Private Sub btnHome_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnHome.Click
        WebBrowser1.GoHome()
    End Sub
End Class
<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
Partial Class Form1
    Inherits System.Windows.Forms.Form
    <System.Diagnostics.DebuggerStepThrough()> _
    Private Sub InitializeComponent()
        Me.ToolStrip1 = New System.Windows.Forms.ToolStrip
        Me.ToolStripLabel1 = New System.Windows.Forms.ToolStripLabel
        Me.txtURL = New System.Windows.Forms.ToolStripTextBox
        Me.btnBack = New System.Windows.Forms.ToolStripButton
        Me.btnForward = New System.Windows.Forms.ToolStripButton
        Me.btnHome = New System.Windows.Forms.ToolStripButton
        Me.WebBrowser1 = New System.Windows.Forms.WebBrowser
        Me.ToolStrip1.SuspendLayout()
        Me.SuspendLayout()

        Me.ToolStrip1.Items.AddRange(New System.Windows.Forms.ToolStripItem() {Me.ToolStripLabel1, Me.txtURL, Me.btnBack, Me.btnForward, Me.btnHome})
        Me.ToolStrip1.Location = New System.Drawing.Point(0, 0)
        Me.ToolStrip1.Size = New System.Drawing.Size(703, 25)

        Me.ToolStripLabel1.Size = New System.Drawing.Size(50, 22)
        Me.ToolStripLabel1.Text = "Address:"

        Me.txtURL.Size = New System.Drawing.Size(200, 25)

        Me.btnBack.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Text
        Me.btnBack.ImageTransparentColor = System.Drawing.Color.Magenta
        Me.btnBack.Name = "btnBack"
        Me.btnBack.Size = New System.Drawing.Size(33, 22)
        Me.btnBack.Text = "Back"
        '
        'btnForward
        '
        Me.btnForward.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Text
        Me.btnForward.ImageTransparentColor = System.Drawing.Color.Magenta
        Me.btnForward.Name = "btnForward"
        Me.btnForward.Size = New System.Drawing.Size(51, 22)
        Me.btnForward.Text = "Forward"
        '
        'btnHome
        '
        Me.btnHome.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Text
        Me.btnHome.ImageTransparentColor = System.Drawing.Color.Magenta
        Me.btnHome.Name = "btnHome"
        Me.btnHome.Size = New System.Drawing.Size(38, 22)
        Me.btnHome.Text = "Home"
        '
        'WebBrowser1
        '
        Me.WebBrowser1.Dock = System.Windows.Forms.DockStyle.Fill
        Me.WebBrowser1.Location = New System.Drawing.Point(0, 25)
        Me.WebBrowser1.MinimumSize = New System.Drawing.Size(20, 20)
        Me.WebBrowser1.Name = "WebBrowser1"
        Me.WebBrowser1.Size = New System.Drawing.Size(703, 429)
        Me.WebBrowser1.TabIndex = 1
        '
        'Form1
        '
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(703, 454)
        Me.Controls.Add(Me.WebBrowser1)
        Me.Controls.Add(Me.ToolStrip1)
        Me.Name = "Form1"
        Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
        Me.Text = "MyBrowser"
        Me.ToolStrip1.ResumeLayout(False)
        Me.ToolStrip1.PerformLayout()
        Me.ResumeLayout(False)
        Me.PerformLayout()

    End Sub
    Friend WithEvents ToolStrip1 As System.Windows.Forms.ToolStrip
    Friend WithEvents WebBrowser1 As System.Windows.Forms.WebBrowser
    Friend WithEvents ToolStripLabel1 As System.Windows.Forms.ToolStripLabel
    Friend WithEvents txtURL As System.Windows.Forms.ToolStripTextBox
    Friend WithEvents btnBack As System.Windows.Forms.ToolStripButton
    Friend WithEvents btnForward As System.Windows.Forms.ToolStripButton
    Friend WithEvents btnHome As System.Windows.Forms.ToolStripButton

End Class