// Shows how to write into multiple OPC XML-DA items using a single method call, and read multiple item values back.
//
// Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html .
// OPC client and subscriber examples in C# on GitHub: https://github.com/OPCLabs/Examples-QuickOPC-CSharp .
// Missing some example? Ask us for it on our Online Forums, https://www.opclabs.com/forum/index ! You do not have to own
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using System;
using System.Diagnostics;
using OpcLabs.BaseLib.OperationModel;
using OpcLabs.EasyOpc.DataAccess;
using OpcLabs.EasyOpc.DataAccess.OperationModel;

namespace DocExamples.DataAccess.Xml
{
    partial class WriteMultipleItemValues
    {
        public static void Main1Xml()
        {
            // Instantiate the client object.
            var client = new EasyDAClient();

            Console.WriteLine("Writing multiple item values...");
            OperationResult[] resultArray = client.WriteMultipleItemValues(
                new[] { 
                    new DAItemValueArguments("http://opcxml.demo-this.com/XmlDaSampleServer/Service.asmx", "Static/Analog Types/Int", 12345),
                    new DAItemValueArguments("http://opcxml.demo-this.com/XmlDaSampleServer/Service.asmx", "Static/Simple Types/Boolean", true),
                    new DAItemValueArguments("http://opcxml.demo-this.com/XmlDaSampleServer/Service.asmx", "Static/Analog Types/Double", 234.56)
                });
            
            for (int i = 0; i < resultArray.Length; i++)
            {
                Debug.Assert(resultArray[i] != null);
                if (resultArray[i].Succeeded)
                    Console.WriteLine($"Results[{i}]: success");
                else
                {
                    Debug.Assert(!(resultArray[i].Exception is null));
                    Console.WriteLine($"Results[{i}] *** Failure: {resultArray[i].ErrorMessageBrief}");
                }
            }

            Console.WriteLine();
            Console.WriteLine("Reading multiple item values...");
            ValueResult[] valueResultArray = client.ReadMultipleItemValues("http://opcxml.demo-this.com/XmlDaSampleServer/Service.asmx",
                new DAItemDescriptor[] {
                        "Static/Analog Types/Int",
                        "Static/Simple Types/Boolean",
                        "Static/Analog Types/Double" });

            for (int i = 0; i < valueResultArray.Length; i++)
            {
                Debug.Assert(valueResultArray[i] != null);
                Console.WriteLine($"valueResultArray[{i}]: {valueResultArray[i]}");
            }


            // Example output:
            //
            //Writing multiple item values...
            //Results[0]: success
            //Results[1]: success
            //Results[2]: success
            //
            //Reading multiple item values...
            //valueResultArray[0]: Success; 12345 {System.Int32}
            //valueResultArray[1]: Success; True {System.Boolean}
            //valueResultArray[2]: Success; 234.56 {System.Single}
        }
    }
}