/// <summary>
/// Prompts the user to view the values of a trend.
/// </summary>
public bool ShowDialog(TsCHdaServer server, TsCHdaItemValueCollection values, bool readOnly)
{
if (server == null)
{
throw new ArgumentNullException("server");
}
if (values == null)
{
throw new ArgumentNullException("values");
}
// initialize controls.
TrendCTRL.Initialize(server, values);
TrendCTRL.ReadOnly = readOnly;
// show the dialog.
if (ShowDialog() != DialogResult.OK)
{
return(false);
}
// update collection if not read only.
if (!readOnly)
{
values.Clear();
foreach (TsCHdaItemValue value in TrendCTRL.GetValues())
{
values.Add(value);
}
}
return(true);
}
/// <summary>
/// Updates the values of the item.
/// </summary>
private void DoInsert()
{
// get the values to insert/replace.
m_values = new TsCHdaItemValueCollection[] { ValuesCTRL.GetValues() };
// check if there is nothing to do.
if (m_values[0] == null || m_values[0].Count == 0)
{
return;
}
// create item (if necessary).
TsCHdaItem item = m_trend.Items[m_item];
if (item == null)
{
item = m_trend.AddItem(m_item);
}
// add the item identifier information to the collection.
m_values[0].ItemName = item.ItemName;
m_values[0].ItemPath = item.ItemPath;
m_values[0].ServerHandle = item.ServerHandle;
m_values[0].ClientHandle = item.ClientHandle;
if (m_synchronous)
{
// insert data.
TsCHdaResultCollection[] results = m_server.Insert(m_values, m_replace);
if (results == null || results.Length != 1)
{
////throw new InvalidResponseException();
}
// display results.
ResultsCTRL.Initialize(m_server, m_values, results);
// save results.
m_results = results;
}
else
{
// check if already waiting for results.
if (m_asyncSent)
{
return;
}
// begin insert data.
OpcItemResult[] results = m_server.Insert(
m_values,
m_replace,
null,
new TsCHdaUpdateCompleteEventHandler(OnUpdateComplete),
out m_request);
if (results == null || results.Length != 1)
{
////throw new InvalidResponseException();
}
// display initial results.
AsyncResultsCTRL.Initialize(m_server, results);
m_asyncSent = true;
}
}
