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);
}
}
}