/// <summary>
/// Edits this instance.
/// </summary>
internal void Edit()
{
try
{
// save existing item id.
OpcDa::Item[] modifiedItems;
OpcDa.Item itemID = Tag.GetItem;
using (ItemListEditDlg dial = new ItemListEditDlg())
{
modifiedItems = dial.ShowDialog(new OpcDa.Item[] { itemID }, false, false);
if (dial.DialogResult != DialogResult.OK || modifiedItems == null)
{
return;
}
}
// modify an existing item.
OpcDa::ItemResult[] resItems;
if (itemID.Key == modifiedItems[0].Key)
{
resItems = Parent.ModifyItems(OpcDa::StateMask.All, modifiedItems);
}
else // add/remove item because the item id changed.
{
Parent.RemoveItem(itemID);
resItems = Parent.AddItems(modifiedItems);
}
Text = resItems[0].ItemName;
Tag.SetItemResult = resItems[0];
}
catch (Exception exc)
{
MessageBox.Show(exc.Message);
}
AssignImageIndex();
}
/// <summary>
/// Open a dialog to display and edit a list of the subscription item objects.
/// </summary>
internal void EditItems()
{
try
{
SubscriptionItems myItems = new SubscriptionItems(this);
// edit the items.
OpcDa::Item[] modifiedItems;
using (ItemListEditDlg dial = new ItemListEditDlg())
{
modifiedItems = dial.ShowDialog(myItems.Items, false, false);
if (dial.DialogResult != DialogResult.OK || modifiedItems == null)
{
return;
}
}
if (Tag != null)
{
// separate the items in lists depending on whether item id changed.
ArrayList insertItems = new ArrayList();
ArrayList updateItems = new ArrayList();
ArrayList deleteItems = new ArrayList();
// save item ids to detect item id changes.
Opc.ItemIdentifier[] itemIDs = myItems.CreateIdentifiers;
for (int ii = 0; ii < itemIDs.Length; ii++)
{
if (modifiedItems[ii].Key != itemIDs[ii].Key)
{
insertItems.Add(modifiedItems[ii]);
deleteItems.Add(itemIDs[ii]);
}
else
{
updateItems.Add(modifiedItems[ii]);
}
}
Tag.SetResultFilters((int)OpcDa.ResultFilter.All);
// delete old items.
if (deleteItems.Count > 0)
{
Tag.RemoveItems((Opc.ItemIdentifier[])deleteItems.ToArray(typeof(Opc.ItemIdentifier)));
}
// update existing items.
if (updateItems.Count > 0)
{
myItems.MatchChildren(Tag.ModifyItems((int)OpcDa::StateMask.All, (OpcDa::Item[])updateItems.ToArray(typeof(OpcDa::Item))));
}
// insert new items.
if (insertItems.Count > 0)
{
myItems.MatchChildren(Tag.AddItems((OpcDa::Item[])insertItems.ToArray(typeof(OpcDa::Item))));
}
}
}
catch (Exception exp)
{
MessageBox.Show(exp.Message, "Edit Items", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
