Originariamente inviato da Pirelli72
Si blocca cosa, dove e quando?
si blocca quando premo il tasto e clicco su apri
ho provato in questo modo:
codice:
Dim oDocument as Object
Private Sub Button1_Click(ByVal sender As System.Object, _
   ByVal e As System.EventArgs) Handles Button1.Click

    Dim strFileName As String

    'Find the Office document.
    With OpenFileDialog1
        .FileName = ""
        .ShowDialog()
        strFileName = .FileName
    End With

    'If the user does not cancel, open the document.
    If strFileName.Length Then
        oDocument = Nothing
        AxWebBrowser1.Navigate(strFileName)
    End If

End Sub

Private Sub Form1_Load(ByVal sender As Object, ByVal e As _
   System.EventArgs) Handles MyBase.Load

    Button1.Text = "Browse"

    With OpenFileDialog1
        .Filter = "Office Documents " & _
        "(*.doc, *.xls, *.ppt)|*.doc;*.xls;*.ppt"
        .FilterIndex = 1
    End With

End Sub

Private Sub Form1_Closing(ByVal sender As Object, ByVal e As _
   System.ComponentModel.CancelEventArgs) Handles MyBase.Closing

    oDocument = Nothing

End Sub
e in questo... ma si blocca ugualmente:
codice:
Public Class Form4
    Dim oDocument As Object
    Private Sub Button1_Click(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles Button1.Click
        WebBrowser1.Navigate("C:\ciao.xls")
    End Sub
End Class