Visual Basic

Private Sub btnNewFolder_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnNewFolder.Click
    If Not SelectedPath Is Nothing Then
        Dim NewPath As String = InputBox("New Folder:", "Create Folder")
        If NewPath <> "" Then
            'Dummy
            MsgBox(String.Format("Folder {0} has been created", NewPath))
        End If
    Else
        MsgBox("A path has to be marked!", MsgBoxStyle.Exclamation, "Error")
    End If
End Sub

Private Sub btnCancel_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnCancel.Click
    DlgResult = False
    Me.Close()    'supposed to close frmFolderBrowser
End Sub

Private Sub frmFolderBrowser_FormClosed(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosedEventArgs) Handles Me.FormClosed
    frmCenter.Refresh()
End Sub

Michael Schäuble wrote:

How can I change this behaviour?

captainmogo wrote:

If the database in unreachable - I want to wait and then try again but if there is a problem with the retrieved data, I want to send it up to the calling code

Luc Pattyn wrote:

. when you want retries, you can but the try-catch inside the loop and swallow exceptions in all but the last iteration. Don't retry forever.

3. background threads typically need to report back to their parent thread, whether success or failure. You shouldn't have a background thread retry forever, or just fail or give up without telling.

for (int tryCount=1; ; tryCount++) {
    try {
        ...
    } catch(Exception exc) (
        if (tryCount< maxTry) continue;
        log(exc.ToString());
        throw new ApplicationException("Operation XXX failed after "+maxTry+" tries", exc);
    }
}
// getting here on success only