protected void AddItem(string itemName, OPCItem item)
{
this.dictItemName.Add(itemName, item);
}
private bool AddItem(OPCItem item)
{
bool flag = true;
OPCITEMDEF[] pItemArray = new OPCITEMDEF[1];
pItemArray[0].szAccessPath = "";
pItemArray[0].szItemID = item.OPCItemName;
pItemArray[0].bActive = item.IsActive ? 1 : 0;
pItemArray[0].hClient = item.ClientHandler;
pItemArray[0].dwBlobSize = 0;
pItemArray[0].pBlob = IntPtr.Zero;
pItemArray[0].vtRequestedDataType = 0;
IntPtr zero = IntPtr.Zero;
IntPtr ppErrors = IntPtr.Zero;
try
{
((IOPCItemMgt) this.group).AddItems(1, pItemArray, out zero, out ppErrors);
int[] destination = new int[1];
Marshal.Copy(ppErrors, destination, 0, 1);
if (destination[0] == 0)
{
OPCITEMRESULT opcitemresult = (OPCITEMRESULT) Marshal.PtrToStructure(zero, typeof(OPCITEMRESULT));
item.ServerHandler = opcitemresult.hServer;
return flag;
}
flag = false;
throw new Exception("在组中添加项不成功，原因：" + this.parent.GetLastError(destination[0]));
}
finally
{
if (zero != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(zero);
zero = IntPtr.Zero;
}
if (ppErrors != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(ppErrors);
ppErrors = IntPtr.Zero;
}
}
return flag;
}
internal void Add(OPCItem item)
{
this.AddItem(item.ItemName, item);
this.dictItemIndex.Add(item.ClientHandler, item);
}
public OPCItem AddItem(string itemName, string opcItemName, int clientHandler, bool isActive)
{
OPCItem item = new OPCItem(this, itemName, opcItemName, clientHandler, isActive);
this.AddItem(item);
this.items.Add(item);
return item;
}