//----------------------------------------------------------------------------------------------------------------------
// btnConnect_Click
//-----------------------
// This method tries to connect to the specified OPC Server.
// If connected successfully, this method also registers the name of the client with the server and
// adds an OPC Group.
//----------------------------------------------------------------------------------------------------------------------
private void btnConnect_Click(object sender, EventArgs e)
{
TsCDaBrowseElement[] BrowserElement;
TsCDaBrowsePosition BrowserPos;
OpcItem Path = new OpcItem("");
_filter.BrowseFilter = TsCDaBrowseFilter.All;
_filter.ReturnAllProperties = true;
_filter.ReturnPropertyValues = true;
try
{
Cursor = Cursors.WaitCursor;
if (!_myServer.IsConnected)
{
// No connection to server, connect to it
_textBoxServerUrl.Enabled = false;
_myServer.Connect(_textBoxServerUrl.Text); // Connect now with Server
BrowserElement = _myServer.Browse(Path, _filter, out BrowserPos);
/// All succeeded, update buttons and text fields
_textBoxServerUrl.Enabled = false;
_btnConnect.Text = "Disconnect";
BrowseCTRL.ShowSingleServer(_myServer, _filter);
PropertiesCTRL.Initialize(null);
}
else
{
// connection to server exists, disconnect to it
_textBoxServerUrl.Enabled = true;
BrowseCTRL.Clear();
PropertiesCTRL.Initialize(null);
_myServer.Disconnect();
_btnConnect.Text = "Connect";
}
Cursor = Cursors.Default; // Set default cursor
}
catch (OpcResultException exe)
{
Cursor = Cursors.Default; /// Set default cursor
MessageBox.Show(exe.Message, exe.Source, MessageBoxButtons.OK, MessageBoxIcon.Warning);
_textBoxServerUrl.Enabled = true;
_btnConnect.Text = "Connect";
}
catch (Exception ex)
{
Cursor = Cursors.Default; /// Set default cursor
MessageBox.Show(ex.Message, ex.Source, MessageBoxButtons.OK, MessageBoxIcon.Warning);
_textBoxServerUrl.Enabled = true;
_btnConnect.Text = "Connect";
}
}
/// <summary>
/// UI: close current server session, and clear related contents from UI
/// <summary>
public void CloseSessionView_OpcuaClient(bool resetUIButton = true)
{
Opcua_EndpointDisconnect();
if (resetUIButton)
{
var ignored = Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
BrowseCTRL.Clear();
SessionsCTRL.Clear();
gridEndpointSelector.Visibility = Visibility.Collapsed;
EndpointSelectorCTRL.Visibility = Visibility.Visible;
EndpointSelectorCTRL.IsEnabled = true;
EnableSessionOpButtons(true);
});
}
}
async void Window_PageClosing(object sender, RoutedEventArgs e)
{
if (m_masterPage == null && m_pages.Count > 0)
{
MessageDlg dialog = new MessageDlg("Close all sessions?", MessageDlgButton.Yes, MessageDlgButton.No);
MessageDlgButton result = await dialog.ShowAsync();
if (result != MessageDlgButton.Yes)
{
return;
}
}
BrowseCTRL.Clear();
for (int ii = 0; ii < m_pages.Count; ii++)
{
if (Object.ReferenceEquals(m_pages[ii], sender))
{
m_pages.RemoveAt(ii);
break;
}
}
}