WebBrowser and CanGoForward

  • Thread starter Thread starter Fla
  • Start date Start date
F

Fla

Hy!

I've developed a small browser for navigate into an HTML manual inside
a form, but I found the following problem when I browse through links
in the same HTML doc: I can't use the GoForward button 'cause
CanGoForward boolean value switches from true to false when I go back
in the link history (i.e. I go to the previous page link)...
but it shouldn't go false 'cause when I browse back there's at least
one page accesible in forward....

I post the following VB.NET code:

Public Class Form_Help2

#Region "Form"

Private Sub Form_Help2_Load(ByVal sender As Object, ByVal e As
System.EventArgs) Handles Me.Load

Me.WebBrowser1.Url = New Uri(Application.StartupPath & "\manual.html"
& "#Figura_8")
Me.WebBrowser1.AllowNavigation = True
Me.browserBackButton.Enabled = False
Me.browserForwardButton.Enabled = False

End Sub

Private Sub Form_Help2_PreviewKeyDown(ByVal sender As Object, ByVal e
As System.Windows.Forms.PreviewKeyDownEventArgs) Handles
Me.PreviewKeyDown,
WebBrowser1.PreviewKeyDown, simpleBrowserToolStrip.PreviewKeyDown,
ToolStripContainer1.PreviewKeyDown

Select Case e.KeyCode
Case Keys.F12
Me.Close
case Keys.F4
if(Keys.Modifiers = Keys.Shift)
Me.Close
End If
End Select

End Sub

#End Region

#Region "WebBrowser"

Private Sub WebBrowser1_CanGoBackChanged(ByVal sender As Object, ByVal
e As System.EventArgs) Handles WebBrowser1.CanGoBackChanged

Me.browserBackButton.Enabled = Me.WebBrowser1.CanGoBack
End Sub
Private Sub WebBrowser1_CanGoForwardChanged(ByVal sender As Object,
ByVal e As System.EventArgs) Handles WebBrowser1.CanGoForwardChanged
Me.browserForwardButton.Enabled = Me.WebBrowser1.CanGoForward

End Sub

Private Sub WebBrowser1_Navigated(ByVal sender As Object, ByVal e As
System.Windows.Forms.WebBrowserNavigatedEventArgs) Handles
WebBrowser1.Navigated

Me.browserAddressTextBox.Text = Me.WebBrowser1.Url.ToString
Me.ToolStripStatusLabel1.Text = Me.WebBrowser1.Url.ToString
Me.ToolStripProgressBar1.Value = Me.ToolStripProgressBar1.Maximum

End Sub

Private Sub WebBrowser1_Navigating(ByVal sender As Object, ByVal e As
System.Windows.Forms.WebBrowserNavigatingEventArgs) Handles
WebBrowser1.Navigating

Me.ToolStripStatusLabel1.Text = "Navigating to " &
Me.WebBrowser1.Url.ToString & " ..."
Me.ToolStripProgressBar1.Value += 1

End Sub

#End Region

Private Sub browserBackButton_Click(ByVal sender As Object, ByVal e As
System.EventArgs) Handles browserBackButton.Click

Me.WebBrowser1.GoBack

End Sub

Private Sub browserForwardButton_Click(ByVal sender As Object, ByVal e
As System.EventArgs) Handles browserForwardButton.Click

Me.WebBrowser1.GoForward

End Sub

Private Sub browserRefreshButton_Click(ByVal sender As Object, ByVal e
As System.EventArgs) Handles browserRefreshButton.Click

Me.WebBrowser1.Refresh

End Sub

Private Sub browserGoButton_Click(ByVal sender As Object, ByVal e As
System.EventArgs) Handles browserGoButton.Click

Me.WebBrowser1.Navigate(Me.browserAddressTextBox.Text)

End Sub

End Class


The HTML code for internal link is like the following one:

....

<a href="#Figura_8">figura 8</a>.
<br /><br />
<div style="text-align: center;">
<a name="Figura_8"></a>
<img style="width: 640px; height: 487px;" alt="Figura 8 non
visualizzata" title="Figura 8: etichetta" src="Images/
Acq_TollLab.png" />
<br />Figura 8: etichetta<br /><div style="text-align: left;"><br />
....

What am I doing wrong?
Any suggestion?
 
Fla,

Mostly it is easier to make a simple program for yourself, that is only
doing the most needed things.

People active in this newgroup are always want to help, the problem has than
however to be short described.

Cor
 
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