private void LoadHistorians()
{
ConfigurationFile configurationFile = ConfigurationFile.Current;
CategorizedSettingsElementCollection systemSettings = configurationFile.Settings["systemSettings"];
string targetHistorianIDValue = systemSettings["TargetHistorianID"]?.Value ?? "0";
TableOperations <Historian> historianTable = new TableOperations <Historian>(ImportParams.Connection);
Dictionary <int, string> historians = historianTable.QueryHistorians().ToDictionary(historian => historian.ID, historian => historian.Acronym);
historians.Add(0, "None");
comboBoxHistorian.DataSource = new BindingSource(historians, null);
comboBoxHistorian.ValueMember = "Key";
comboBoxHistorian.DisplayMember = "Value";
void updateSelectedHistorian()
{
if (!int.TryParse(comboBoxHistorian.SelectedValue.ToString(), out int historianID))
{
historianID = -1;
}
TargetConfigFrame.HistorianID = historianID <= 0 ? null : historianID;
systemSettings["TargetHistorianID", true].Update(historianID, "Target historian ID.", false, SettingScope.User);
}
comboBoxHistorian.SelectedValueChanged += (_, _) => updateSelectedHistorian();
if (!int.TryParse(targetHistorianIDValue, out int targetHistorianID) || !historians.ContainsKey(targetHistorianID))
{
targetHistorianID = -1;
}
if (targetHistorianID == -1)
{
// Attempt to select an ideal initial target historian
if (historians.ContainsValue("PPA"))
{
targetHistorianID = historians.FirstOrDefault(kvp => string.Equals(kvp.Value, "PPA")).Key;
}
else if (historians.Count > 1)
{
targetHistorianID = historians.FirstOrDefault(kvp => kvp.Key > 0 && !string.Equals(kvp.Value, "STAT")).Key;
}
if (targetHistorianID == -1)
{
targetHistorianID = 0;
}
}
comboBoxHistorian.SelectedValue = targetHistorianID;
updateSelectedHistorian();
}
