public List <string> ScanOPCDa(string host, bool isClean = false)
{
if (isClean)
{
hostCollection.Clear();
}
List <string> retValue = new List <string>();
try
{
OpcServerDescription[] opcServers = serverEnumerator.Enumerate(host, OpcServerCategory.OpcDaServer10,
OpcServerCategory.OpcDaServer20,
OpcServerCategory.OpcDaServer30);
string[] serviceList = opcServers.Select(a => a.ProgId).ToArray();
if (serviceList.Any())
{
if (hostCollection.Any(a => { return(a.Host == host); }))
{
HostCollection item = hostCollection.Where(a => { return(a.Host == host); })
.FirstOrDefault();
var exceptList = item.ServiceIds.Except(serviceList);
if (exceptList.Any())
{
item.ServiceIds.AddRange(exceptList);
}
}
else
{
hostCollection.Add(new HostCollection()
{
Host = host, ServiceIds = serviceList.ToList()
});
}
TreeNode opcdaNode = OPCDAViewHelper.GetRootNode();
TreeNode hostNode = OPCDAViewHelper.AddNode(opcdaNode, host, host);
foreach (string progId in serviceList)
{
OPCDAViewHelper.AddNode(hostNode, progId, progId);
}
}
return(opcServers.Select(a => a.ProgId).ToList());
}
catch (Exception)
{
return(retValue);
}
}
private bool CheckServiceExisted(HostCollection service, string serviceProgId)
{
return(opcDaServices.Any(item => { return item.Host == service.Host && item.ServiceId == serviceProgId; }));
}