要求された Web サイトが開かない (またはインターネットが機能していない) 場合に、ユーザーにメッセージを表示しようとしています。伝えたいメッセージは
「サイトが機能していません。管理者に連絡してください。」
これどうやってするの?これが私が持っているものです
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
WebBrowser1.Navigate("google.com")
Dim connectn As Boolean
If connectn = False Then
MsgBox("site not working please contact the developer")
End If
End Sub
Private Sub Back_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Back.Click
WebBrowser1.GoBack()
End Sub
Private Sub Forward_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Forward.Click
WebBrowser1.GoForward()
End Sub
Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
WebBrowser1.Stop()
End Sub
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
WebBrowser1.GoHome()
End Sub
Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click
WebBrowser1.Refresh()
End Sub
Private Sub WebBrowser1_DocumentCompleted(ByVal sender As System.Object, ByVal e As System.Windows.Forms.WebBrowserDocumentCompletedEventArgs)
End Sub
Private Sub Label1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label1.Click
End Sub
Private Sub Label2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label2.Click
End Sub
Private Sub CloseToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CloseToolStripMenuItem.Click
Application.Exit()
End Sub
Private Sub DateTimePicker1_ValueChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DateTimePicker1.ValueChanged
End Sub
Private Sub WebBrowser1_DocumentCompleted_1(ByVal sender As System.Object, ByVal e As System.Windows.Forms.WebBrowserDocumentCompletedEventArgs) Handles WebBrowser1.DocumentCompleted
End Sub
End Class