/// <summary>
/// 添加项
/// </summary>
/// <param name="lstOpcItem"></param>
public void AddItems(List <OpcItem> lstOpcItem)
{
OPCITEMDEF[] itemArray = new OPCITEMDEF[lstOpcItem.Count];
for (int i = 0; i < itemArray.Length; i++)
{
itemArray[i].szAccessPath = lstOpcItem[i].AccessPath;
itemArray[i].szItemID = lstOpcItem[i].PlcAddress;
itemArray[i].bActive = lstOpcItem[i].IsActive;
itemArray[i].hClient = lstOpcItem[i].ClientItemHandle;
itemArray[i].dwBlobSize = lstOpcItem[i].dwBlobSize;
itemArray[i].pBlob = lstOpcItem[i].pBlob;
itemArray[i].vtRequestedDataType = lstOpcItem[i].RequestedDataType;
}
IntPtr pAddResults = IntPtr.Zero;
IntPtr pErrors = IntPtr.Zero;
try
{
OPCItemMgt.AddItems(itemArray.Length, itemArray, out pAddResults, out pErrors);
//获取ServerItemrHandles
int[] errors = new int[itemArray.Length];
Marshal.Copy(pErrors, errors, 0, itemArray.Length);
IntPtr pos = pAddResults;
for (int i = 0; i < errors.Length; i++)
{
if (errors[i] == 0)
{
if (i != 0)
{
pos = new IntPtr(pos.ToInt32() + Marshal.SizeOf(typeof(OPCITEMRESULT)));
}
OPCITEMRESULT result = (OPCITEMRESULT)Marshal.PtrToStructure(pos, typeof(OPCITEMRESULT));
lstOpcItem[i].ServerItemHandle = result.hServer;
OpcItems.Add(lstOpcItem[i].ClientItemHandle, lstOpcItem[i]);
}
else
{
throw new ApplicationException($"添加组[{GroupName}]时，添加项[{itemArray[i].szItemID}]失败！");
}
}
}
catch (Exception ex)
{
throw ex;
}
finally
{
if (pAddResults != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(pAddResults);
pAddResults = IntPtr.Zero;
}
if (pErrors != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(pErrors);
pErrors = IntPtr.Zero;
}
}
}
/// <summary>
/// 添加一项
/// </summary>
/// <param name="opcItem"></param>
public void AddItem(OpcItem opcItem)
{
OPCITEMDEF item = new OPCITEMDEF();
item.szAccessPath = opcItem.AccessPath;
item.szItemID = opcItem.PlcAddress;
item.bActive = opcItem.IsActive;
item.hClient = opcItem.ClientItemHandle;
item.dwBlobSize = opcItem.dwBlobSize;
item.pBlob = opcItem.pBlob;
item.vtRequestedDataType = opcItem.RequestedDataType;
IntPtr pAddResults = IntPtr.Zero;
IntPtr pErrors = IntPtr.Zero;
try
{
OPCItemMgt.AddItems(1, new OPCITEMDEF[] { item }, out pAddResults, out pErrors);
//获取ServerItemrHandles
int[] errors = new int[1];
Marshal.Copy(pErrors, errors, 0, 1);
IntPtr pos = pAddResults;
if (errors[0] == 0)
{
OPCITEMRESULT result = (OPCITEMRESULT)Marshal.PtrToStructure(pos, typeof(OPCITEMRESULT));
opcItem.ServerItemHandle = result.hServer;
OpcItems.Add(opcItem.ClientItemHandle, opcItem);
}
else
{
throw new ApplicationException($"添加组[{GroupName}]时，添加项[{item.szItemID}]失败！");
}
}
catch (Exception ex)
{
throw ex;
}
finally
{
if (pAddResults != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(pAddResults);
pAddResults = IntPtr.Zero;
}
if (pErrors != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(pErrors);
pErrors = IntPtr.Zero;
}
}
}