/// <summary>
/// Edits items in the specified subscription.
/// </summary>
private void EditItem(TreeNode node, TsCDaSubscription subscription, TsCDaItem item)
{
try
{
// save existing item id.
OpcItem itemId = new OpcItem(item);
TsCDaItem[] items = new ItemListEditDlg().ShowDialog(new TsCDaItem[] { item }, false, false);
if (items == null)
{
return;
}
// modify an existing item.
if (itemId.Key == items[0].Key)
{
subscription.ModifyItems((int)TsCDaStateMask.All, items);
}
// add/remove item because the item id changed.
else
{
items = subscription.AddItems(items);
subscription.RemoveItems(new OpcItem[] { itemId });
}
node.Text = items[0].ItemName;
node.Tag = items[0];
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
}
/// <summary>
/// Toggles the active state of a subscription.
/// </summary>
private void SetActive(TreeNode node, TsCDaSubscription subscription, TsCDaItem item, bool active)
{
try
{
item.Active = active;
item.ActiveSpecified = true;
TsCDaItem[] items = subscription.ModifyItems((int)TsCDaStateMask.Active, new TsCDaItem[] { item });
if (items != null)
{
node.Tag = items[0];
}
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
}
/// <summary>
/// Edits items in the specified subscription.
/// </summary>
private void EditItems(TreeNode node, TsCDaSubscription subscription)
{
try
{
// save item ids to detect item id changes.
OpcItem[] itemIDs = new OpcItem[subscription.Items.Length];
for (int ii = 0; ii < itemIDs.Length; ii++)
{
itemIDs[ii] = new OpcItem(subscription.Items[ii]);
}
// edit the items.
TsCDaItem[] items = new ItemListEditDlg().ShowDialog(subscription.Items, false, false);
if (items == null)
{
return;
}
// separate the items in lists depending on whether item id changed.
ArrayList insertItems = new ArrayList();
ArrayList updateItems = new ArrayList();
ArrayList deleteItems = new ArrayList();
for (int ii = 0; ii < itemIDs.Length; ii++)
{
if (items[ii].Key != itemIDs[ii].Key)
{
insertItems.Add(items[ii]);
deleteItems.Add(itemIDs[ii]);
}
else
{
updateItems.Add(items[ii]);
}
}
// update existing items.
if (updateItems.Count > 0)
{
subscription.ModifyItems((int)TsCDaStateMask.All, (TsCDaItem[])updateItems.ToArray(typeof(TsCDaItem)));
}
// insert new items.
if (insertItems.Count > 0)
{
subscription.AddItems((TsCDaItem[])insertItems.ToArray(typeof(TsCDaItem)));
}
// delete old items.
if (deleteItems.Count > 0)
{
subscription.RemoveItems((OpcItem[])deleteItems.ToArray(typeof(OpcItem)));
}
// update tree.
node.Nodes.Clear();
foreach (TsCDaItem item in subscription.Items)
{
AddItem(node, item);
}
node.Expand();
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
}
