/// <summary>
/// Prompts the user to specified values to replace.
/// </summary>
public bool ShowDialog(TsCHdaServer server, OpcItem item, bool synchronous)
{
if (server == null)
{
throw new ArgumentNullException("server");
}
m_server = server;
m_synchronous = synchronous;
m_item = item;
m_values = null;
m_results = null;
// create new trend.
m_trend = new TsCHdaTrend(m_server);
// set reasonable defaults.
m_trend.StartTime = new TsCHdaTime("YEAR");
m_trend.EndTime = new TsCHdaTime("YEAR+1H");
BrowseCTRL.Browse(m_server, null);
TrendCTRL.Initialize(m_trend, RequestType.ReadRaw);
ValuesCTRL.Initialize(m_server, null);
AsyncResultsCTRL.Initialize(m_server, null);
ResultsCTRL.Initialize(m_server, null);
// update dialog state.
SetState();
// show dialog.
bool result = (ShowDialog() == DialogResult.OK);
// release item handles.
m_trend.ClearItems();
// return item values.
return(result);
}
/// <summary>
/// Called to disconnect from a server.
/// </summary>
public void OnDisconnect()
{
// disconnect server.
if (m_server != null)
{
try { m_server.Disconnect(); }
catch {}
m_server.Dispose();
m_server = null;
}
// clear cache.
m_cache = new Hashtable();
// initialize controls.
StatusCTRL.Start(null);
TrendsCTRL.Initialize(null);
ValuesCTRL.Initialize(null, null);
OutputCTRL.Text = "";
}
