private void Browse(string id_opcclient, OpcNodeInfo node, int level = 0)
{
if (node.Children().Count() == 0)
{
if (repo._context.sys_opcs.Where(t => t.id_opcclient == id_opcclient && t.opcnode == node.NodeId.ToString()).Count() == 0)
{
var db = new DataBase.System.sys_opc_db()
{
create_by = getUserId(),
name = node.Name.ToString(),
id_opcclient = id_opcclient,
opcnode = node.NodeId.ToString(),
id = Guid.NewGuid().ToString(),
status_del = 1,
note = "auto insert",
};
repo._context.sys_opcs.AddAsync(db);
repo._context.SaveChanges();
}
}
level++;
foreach (var childNode in node.Children())
{
Browse(id_opcclient, childNode, level);
}
}
private static void Browse(OpcNodeInfo node, int level)
{
//// In general attributes and children are retrieved from the server on demand. This
//// is done to reduce the amount of traffic and to improve the preformance when
//// searching/browsing for specific attributes or children. After attributes or
//// children of a node were browsed they are stored internally so that subsequent
//// attribute and children requests are processed without any interaction with the
//// OPC UA server.
// Browse the DisplayName attribute of the node. It is also possible to browse
// multiple attributes at once (see the method Attributes(...)).
var displayName = node.Attribute(OpcAttribute.DisplayName);
Console.WriteLine(
"{0}{1} ({2})",
new string(' ', level * 4),
node.NodeId.ToString(OpcNodeIdFormat.Foundation),
displayName.Value);
// Browse the children of the node and continue browsing in preorder.
foreach (var childNode in node.Children())
{
Program.Browse(childNode, level + 1);
}
}
private void Browse(OpcNodeInfo node, int level = 0)
{
Console.WriteLine("{0}{1}({2})",
new string('.', level * 4),
node.Attribute(OpcAttribute.DisplayName).Value,
node.NodeId);
level++;
foreach (var childNode in node.Children())
{
Browse(childNode, level);
}
}
private static int GetLastJob(OpcNodeInfo jobsNode)
{
var readJobs = new List <OpcReadNode>();
foreach (var childNode in jobsNode.Children())
{
if (childNode is OpcVariableNodeInfo jobNode)
{
readJobs.Add(new OpcReadNode(jobNode.NodeId, OpcAttribute.BrowseName));
}
}
var client = jobsNode.Context.Client;
return((from value in client.ReadNodes(readJobs)
where value.Status.IsGood
let jobName = value.As <OpcName>().Value
let jobId = int.Parse(jobName.Substring("JOB".Length))
select jobId).Max());
}
private bool Browse(OpcNodeInfo node, TreeNodeCollection treeNodes)
{
var result = false;
try {
var treeNode = treeNodes.Add(node.DisplayName.Value);
if (node is OpcObjectNodeInfo)
{
treeNode.ImageIndex = 0;
if (node.Reference.TypeDefinitionId == Opc.Ua.ObjectTypeIds.FolderType)
{
treeNode.ImageIndex = 1;
}
}
else if (node is OpcMethodNodeInfo)
{
treeNode.ImageIndex = 2;
}
else if (node is OpcVariableNodeInfo)
{
treeNode.ImageIndex = 3;
if (node.Reference.ReferenceType == OpcReferenceType.HasProperty)
{
treeNode.ImageIndex = 4;
}
}
treeNode.Tag = node;
treeNode.Nodes.Add("Browsing...");
result = true;
}
catch (OpcException ex) {
this.ShowMessage("Browse", "Failed to browse: " + ex.Message);
}
return(result);
}
private static IEnumerable <(OpcNodeId ParentId, OpcMethodNodeInfo Node)> BrowseMethods(OpcNodeInfo node)
{
var parentId = node.NodeId;
foreach (var childNode in node.Children())
{
if (childNode is OpcMethodNodeInfo methodNode)
{
yield return(parentId, methodNode);
}
else
{
foreach (var childMethod in BrowseMethods(childNode))
{
yield return(childMethod);
}
}
}
}
private static void Browse(OpcNodeInfo node)
{
Program.Browse(node, 0);
}
private bool Browse(OpcNodeInfo node)
{
this.nodesTreeView.Nodes.Clear();
return(this.Browse(node, this.nodesTreeView.Nodes));
}
public static void Main()
{
string stringEntered = "";
bool exitSession = false;
List <OpcNodeInfo> listOfNodes;
using (var client = new OpcClient("opc.tcp://localhost:4840"))
{
client.Connect();
while (true)//(!exitSession)
{
Console.WriteLine("Available commands: 'view' 'edit' 'disconnect'");
Console.Write("Enter a command from the above list: ");
stringEntered = Convert.ToString(Console.ReadLine());
switch (stringEntered)
{
case "view":
{
Console.WriteLine("Enter the name(s) of the node(s) separated by whitespace(s):");
string fullString = Console.ReadLine();
List <OpcNodeInfo> nodeInfoList = AddNodesToList(fullString, client);
Console.WriteLine("****************************");
foreach (OpcNodeInfo infoElement in nodeInfoList)
{
//Start here!
}
Console.WriteLine("****************************");
DisplayNodeInfo(nodeInfoList);
break;
}
case "editValue":
{
//EditNodeValue();
break;
}
case "disconnect":
{
client.Disconnect();
Console.WriteLine("Session is exiting...");
exitSession = true;
break;
}
default:
{
Console.WriteLine(stringEntered + " is not an accepted command");
break;
}
}
string[] splittedString = stringEntered.Split(" ");
listOfNodes = new List <OpcNodeInfo>(); //or initialize it when declared and clear the list here?
OpcNodeInfo machineNode;
foreach (string substring in splittedString)
{
machineNode = client.BrowseNode($"ns=2;");
// if(!machineNode.Name.IsNull)
// {
OpcNodeInfo jobnode = machineNode.Child("Job");
listOfNodes.Add(machineNode);
//}
}
OpcBrowseNode test = new OpcBrowseNode("s=Message");
IEnumerable <OpcNodeInfo> infoAboutNodes = client.BrowseNodes(test);
foreach (string element in splittedString)
{
List <OpcReadNode> liste = new List <OpcReadNode>();
liste.Add(new OpcReadNode("s=Message"));
//OpcNodeInfo info = client.BrowseNode($"ns=2;s=Message");
List <OpcBrowseNode> liste2 = new List <OpcBrowseNode>();
//OpcBrowseNode test = new OpcBrowseNode("s=Message");
IEnumerable <OpcNodeInfo> info = client.BrowseNodes(test);
Console.WriteLine("\n**********************************");
Console.WriteLine("Writing the infoElements...");
Console.WriteLine("**********************************\n");
foreach (OpcNodeInfo infoElement in info)
{
Console.WriteLine("NodeID: " + infoElement.NodeId);
Console.WriteLine("InfoElement:: " + infoElement.ToString() + "\n");
}
var nodeOfInterest = client.ReadNode($"ns=2;s={stringEntered}");
if (nodeOfInterest.Value != null)
{
Console.Write($"The value of the node is: {nodeOfInterest.Value}\t");
Console.WriteLine($"The ID of the node is: {nodeOfInterest.DataTypeId}\n");
}
}
if (client.State == OpcClientState.Connected)
{
var temperature = client.ReadNode("ns=2;s=Temperature");
var message = client.ReadNode("ns=2;s=Message");
var level = client.ReadNode("ns=2;s=Level");
Console.WriteLine($"Current Temperature is {temperature} °C");
Console.WriteLine($"Current message is {message}");
Console.WriteLine($"Level: {level}");
}
Thread.Sleep(1000);
}
}
}
