private void GetItemChildren(List <OPCItem> items, string szNameFilter, IOPCBrowseServerAddressSpace pParent, OPCItem parentItem = null)
{
opcprox.IEnumString pEnum;
uint cnt;
string strName;
string szItemID;
try
{
pParent.BrowseOPCItemIDs(tagOPCBROWSETYPE.OPC_LEAF, szNameFilter, (ushort)VarEnum.VT_EMPTY, 0, out pEnum);
pEnum.RemoteNext(1, out strName, out cnt);
int nLeavesCount = 0;
while (cnt != 0)
{
pParent.GetItemID(strName, out szItemID); // получает полный идентификатор тега
GetItemProperties(szItemID);
items.Add(
new OPCItem()
{
Parent = parentItem,
ItemName = strName,
Enabled = true,
ItemType = OPCItemType.LEAF,
ItemID = szItemID
}
);
pEnum.RemoteNext(1, out strName, out cnt);
nLeavesCount++;
}
pParent.BrowseOPCItemIDs(tagOPCBROWSETYPE.OPC_BRANCH, szNameFilter, (ushort)VarEnum.VT_EMPTY, 0, out pEnum);
pEnum.RemoteNext(1, out strName, out cnt);
int nBranchesCount = 0;
while (cnt != 0)
{
pParent.GetItemID(strName, out szItemID);
OPCItem item = new OPCItem()
{
Parent = parentItem,
ItemName = strName,
Enabled = true,
ItemType = OPCItemType.BRANCH,
ItemID = szItemID
};
items.Add(item);
pParent.ChangeBrowsePosition(tagOPCBROWSEDIRECTION.OPC_BROWSE_TO, szItemID);
GetItemChildren(items, "", pParent, item);
pParent.ChangeBrowsePosition(tagOPCBROWSEDIRECTION.OPC_BROWSE_UP, szItemID);
pEnum.RemoteNext(1, out strName, out cnt);
nBranchesCount++;
}
}
catch (System.Exception ex)
{
Console.Out.WriteLine(ex.Message);
}
}
/// <summary>
/// Looks up the item id for the node relative to the current browse position.
/// </summary>
/// <param name="browseName">Name of the element to lookup.</param>
/// <returns>The item id. Null if an error occurs.</returns>
private string GetItemId(string browseName)
{
string methodName = "IOPCBrowseServerAddressSpace.GetItemID";
try
{
IOPCBrowseServerAddressSpace server = BeginComCall <IOPCBrowseServerAddressSpace>(methodName, true);
string itemId = null;
server.GetItemID(browseName, out itemId);
return(itemId);
}
catch (Exception e)
{
if (ComUtils.IsUnknownError(e, ResultIds.E_FAIL))
{
ComCallError(methodName, e);
}
return(null);
}
finally
{
EndComCall(methodName);
}
}
public string GetItemID(string p_ItemDataID)
{
string l_ItemID;
m_IfBrowse.GetItemID(p_ItemDataID, out l_ItemID);
return(l_ItemID);
}
private void AddTreeNode(IOPCBrowseServerAddressSpace srv, TreeNodeCollection root, string tag)
{
TreeNode item = root.Add(tag);
OPCChannelInfo channel = new OPCChannelInfo();
channel.progId = serversComboBox.Text;
channel.host = localServerButton.Checked ? "localhost" : serverTextBox.Text;
srv.GetItemID(tag, out channel.channel);
item.Tag = channel;
}
private void AddTreeNode(IOPCBrowseServerAddressSpace srv, TreeNodeCollection root, string tag)
{
TreeNode item = root.Add(tag);
OPCChannelInfo channel = new OPCChannelInfo
{
progId = txtOPCServer.Text,
host = txtOPCServerPath.Text
};
srv.GetItemID(tag, out channel.channel);
item.Tag = channel;
}
/// <summary>
/// Получает дерево тегов OPC DA сервера
/// </summary>
/// <param name="parentDirectory">При первом вызове передать null -
/// будеть создана корневая директория</param>
/// <param name="server"></param>
void BuildTreeTags(ref OpcDaDirectory parentDirectory, IOPCBrowseServerAddressSpace server)
{
opcproxy.IEnumString ptrEnum;
uint cnt;
string strName;
string szItemID;
if (parentDirectory == null)
{
parentDirectory = new OpcDaDirectory(); // Создаём корневую директорию
}
// Получаем все теги
server.BrowseOPCItemIDs(tagOPCBROWSETYPE.OPC_LEAF, "", (ushort)VarEnum.VT_EMPTY, 0, out ptrEnum);
ptrEnum.RemoteNext(1, out strName, out cnt);
while (cnt != 0)
{
// получаем полный идентификатор тега
server.GetItemID(strName, out szItemID);
parentDirectory.Items.Add(new OpcDaTag(szItemID, strName, parentDirectory));
ptrEnum.RemoteNext(1, out strName, out cnt);
}
// Получем директории
server.BrowseOPCItemIDs(tagOPCBROWSETYPE.OPC_BRANCH, "", 1, 0, out ptrEnum);
ptrEnum.RemoteNext(1, out strName, out cnt);
while (cnt != 0)
{
server.ChangeBrowsePosition(tagOPCBROWSEDIRECTION.OPC_BROWSE_DOWN, strName);
var childDirectory = new OpcDaDirectory(strName, parentDirectory);
parentDirectory.Items.Add(childDirectory);
BuildTreeTags(ref childDirectory, server);
server.ChangeBrowsePosition(tagOPCBROWSEDIRECTION.OPC_BROWSE_UP, strName);
ptrEnum.RemoteNext(1, out strName, out cnt);
}
}