/// <summary>
/// Browses for children of the element at the current node.
/// </summary>
protected void Browse(AddressSpaceDataBase.TagsTableRow itemID, OpcDa::BrowseFilters filters)
{
try
{
// begin a browse.
OpcDa::BrowsePosition position = null;
foreach (var element in m_Dictionary.Browse(itemID, filters, out position))
{
AddBrowseElement(element);
}
// loop until all elements have been fetched.
while (position != null)
{
DialogResult result = MessageBox.Show(
"More items meeting search criteria exist. Continue browse?",
"Browse Items",
MessageBoxButtons.YesNo, MessageBoxIcon.Question
);
if (result != DialogResult.Yes)
{
break;
}
// fetch next batch of elements, add children.
foreach (var element in m_Dictionary.BrowseNext(ref position))
{
AddBrowseElement(element);
}
}
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
}
/// <summary>
/// Browses for children of the element at the current node.
/// </summary>
protected void Browse(Opc.ItemIdentifier itemID, OpcDa::BrowseFilters filters)
{
try
{
// begin a browse.
OpcDa::BrowsePosition position = null;
OpcDa.BrowseElement[] children = m_Server.Browse(itemID, filters, out position);
if (children == null)
{
return;
}
foreach (var element in m_Server.Browse(itemID, filters, out position))
{
AddBrowseElement(element);
}
// loop until all elements have been fetched.
while (position != null)
{
DialogResult result = MessageBox.Show(
"More items meeting search criteria exist. Continue browse?",
"Browse Items",
MessageBoxButtons.YesNo, MessageBoxIcon.Question
);
if (result != DialogResult.Yes)
{
break;
}
// fetch next batch of elements add children.
foreach (OpcDa::BrowseElement element in m_Server.BrowseNext(ref position))
{
AddBrowseElement(element);
}
}
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
}
