/// <summary>
/// 同步写
/// </summary>
/// <param name="dataPointID"></param>
/// <param name="value"></param>
/// <returns></returns>
public bool Write(int dataPointID, object value)
{
IntPtr pErrors = IntPtr.Zero;
try
{
object[] obj = new object[] { value };
OPCSyncIO.Write(1, new int[] { OpcItems[dataPointID].ServerItemHandle }, obj, out pErrors);
int[] errors = new int[1];
Marshal.Copy(pErrors, errors, 0, 1);
if (errors[0] != 0)
{
throw new ApplicationException($"数据点(ID:{dataPointID})同步写入失败。");
}
return(true);
}
catch (Exception ex)
{
throw ex;
}
finally
{
if (pErrors != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(pErrors);
pErrors = IntPtr.Zero;
}
}
}
/*------------------------------------------------------
* Execute SyncWrite
*
* (ret) True OK
* False NG
* ------------------------------------------------------*/
public bool SyncWrite(int[] ServerHd, object[] Value)
{
int iItemCount = ServerHd.Length;
IOPCSyncIO OPCSyncIO;
IOPCSyncIO2 OPCSyncIO2;
IntPtr ppErrors;
int[] errors = new int[iItemCount];
try
{
switch (m_OpcdaVer)
{
case DEF_OPCDA.VER_30:
OPCSyncIO2 = (IOPCSyncIO2)m_OPCGroup2;
OPCSyncIO2.Write(iItemCount, ServerHd, Value, out ppErrors);
Marshal.Copy(ppErrors, errors, 0, iItemCount);
Marshal.FreeCoTaskMem(ppErrors);
break;
case DEF_OPCDA.VER_10:
case DEF_OPCDA.VER_20:
default:
OPCSyncIO = (IOPCSyncIO)m_OPCGroup;
OPCSyncIO.Write(iItemCount, ServerHd, Value, out ppErrors);
Marshal.Copy(ppErrors, errors, 0, iItemCount);
Marshal.FreeCoTaskMem(ppErrors);
break;
}
}
catch (Exception exc)
{
MessageBox.Show(exc.ToString(), "SyncWrite");
return(false);
}
// erase errors
System.GC.Collect(); //04/12/29 Revised Memory Leak
return(true);
}
