public bool Disconnect()
{
var flag = false;
try
{
if (mItemIDList != null)
{
var handlesSrv = HandleClients.Keys.ToArray <int>();
if (TheGrp != null)
{
int[] aE;
TheGrp.RemoveItems(handlesSrv, out aE);
TheGrp.DataChanged -= TheGrp_DataChanged;
TheGrp.ReadCompleted -= TheGrp_ReadCompleted;
TheGrp.WriteCompleted -= TheGrp_WriteCompleted;
TheGrp.Remove(false);
TheGrp = null;
}
}
if (TheSrv != null)
{
TheSrv.Disconnect();
flag = true;
TheSrv = null;
}
}
finally
{
TheSrv = null;
TheGrp = null;
}
return(flag);
}
public bool Connect(params string[] ServerProgID)
{
try {
if (TheSrv == null)
{
TheSrv = new OpcServer();
if (ServerProgID.Length == 0)
{
var s = ServerList;
if (s.Count > 0)
{
TheSrv.Connect(s[0]);
}
else
{
return(false);
}
}
else
{
TheSrv.Connect(ServerProgID[0]);
}
}
else
{
var a = new SERVERSTATUS();
TheSrv.GetStatus(out a);
if (a.eServerState != OPCSERVERSTATE.OPC_STATUS_RUNNING)
{
if (ServerProgID.Length == 0)
{
var s = ServerList;
if (s.Count > 0)
{
TheSrv.Connect(s[0]);
}
}
else
{
TheSrv.Connect(ServerProgID[0]);
}
}
}
return(true);
} catch (Exception) {
TheSrv.Disconnect();
throw;
}
}
private OpcGroup AddGroup(string GroupName)
{
if (TheGrp != null)
{
return(TheGrp);
}
TheGrp = TheSrv.AddGroup(GroupName, false, mUpdateRate);
TheGrp.DataChanged += TheGrp_DataChanged;
TheGrp.ReadCompleted += TheGrp_ReadCompleted;
TheGrp.WriteCompleted += TheGrp_WriteCompleted;
TheGrp.SetEnable(true);
TheGrp.Active = false;
return(TheGrp);
}