// This example shows how to write a value into a single item.

using System;
using OpcLabs.EasyOpc.DataAccess;
using OpcLabs.EasyOpc.OperationModel;

namespace DocExamples.DataAccess._EasyDAClient
{
    partial class WriteItemValue
    {
        public static void Main1()
        {
            // Instantiate the client object.
            var client = new EasyDAClient();

            try
            {
                client.WriteItemValue("", "OPCLabs.KitServer.2", "Simulation.Register_I4", 12345);
            }
            catch (OpcException opcException)
            {
                Console.WriteLine("*** Failure: {0}", opcException.GetBaseException().Message);
                return;
            }
            Console.WriteLine("Success");
        }
    }
}

// This example shows how to write a value into a single OPC XML-DA item.

using System;
using OpcLabs.EasyOpc.DataAccess;
using OpcLabs.EasyOpc.OperationModel;

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

            try
            {
                client.WriteItemValue(
                    "http://opcxml.demo-this.com/XmlDaSampleServer/Service.asmx", 
                    "Static/Analog Types/Int", 
                    12345);
            }
            catch (OpcException opcException)
            {
                Console.WriteLine("*** Failure: {0}", opcException.GetBaseException().Message);
            }
        }
    }
}

// Shows how to write into multiple OPC items using a single method call, and read multiple item values back.

using System;
using System.Diagnostics;
using OpcLabs.BaseLib.OperationModel;
using OpcLabs.EasyOpc.DataAccess;
using OpcLabs.EasyOpc.DataAccess.OperationModel;

namespace DocExamples.DataAccess._EasyDAClient
{
    partial class WriteMultipleItemValues
    {
        public static void Main1()
        {
            // Instantiate the client object.
            var client = new EasyDAClient();

            Console.WriteLine("Writing multiple item values...");
            OperationResult[] resultArray = client.WriteMultipleItemValues(
                new[] { 
                    new DAItemValueArguments("", "OPCLabs.KitServer.2", "Simulation.Register_I4", 12345),
                    new DAItemValueArguments("", "OPCLabs.KitServer.2", "Simulation.Register_BOOL", true),
                    new DAItemValueArguments("", "OPCLabs.KitServer.2", "Simulation.Register_R4", 234.56)
                });
            
            for (int i = 0; i < resultArray.Length; i++)
            {
                Debug.Assert(resultArray[i] != null);
                if (resultArray[i].Succeeded)
                    Console.WriteLine($"Result {i}: success");
                else
                {
                    Debug.Assert(!(resultArray[i].Exception is null));
                    Console.WriteLine($"Result {i} *** Failure: {resultArray[i].ErrorMessageBrief}");
                }
            }

            Console.WriteLine();
            Console.WriteLine("Reading multiple item values...");
            ValueResult[] valueResultArray = client.ReadMultipleItemValues("OPCLabs.KitServer.2",
                new DAItemDescriptor[] { 
                        "Simulation.Register_I4", 
                        "Simulation.Register_BOOL", 
                        "Simulation.Register_R4" });

            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...
            //Result 0: success
            //Result 1: success
            //Result 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}
        }
    }
}

// This example shows how to write values into 3 items at once, test for success of each write and display the exception 
// message in case of failure.

using System;
using System.Diagnostics;
using OpcLabs.BaseLib.OperationModel;
using OpcLabs.EasyOpc.DataAccess;
using OpcLabs.EasyOpc.DataAccess.OperationModel;

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

            Console.WriteLine("Writing multiple item values...");
            OperationResult[] resultArray = client.WriteMultipleItemValues(
                new[] { 
                    new DAItemValueArguments("", "OPCLabs.KitServer.2", "Simulation.Register_I4", 23456),
                    new DAItemValueArguments("", "OPCLabs.KitServer.2", "Simulation.Register_R8", 
                        "This string cannot be converted to VT_R8"),
                    new DAItemValueArguments("", "OPCLabs.KitServer.2", "UnknownItem", "ABC")
                });


            for (int i = 0; i < resultArray.Length; i++)
            {
                Debug.Assert(resultArray[i] != null);
                if (resultArray[i].Succeeded)
                    Console.WriteLine("Result {0}: success", i);
                else
                {
                    Debug.Assert(!(resultArray[i].Exception is null));
                    Console.WriteLine("Result {0} *** Failure: {1}", i, resultArray[i].ErrorMessageBrief);
                }
            }
        }


        // Example output:
        //
        //Writing multiple item values...
        //Result 0: success
        //Result 1 *** Failure: Type mismatch.  [...]
        //Result 2 *** Failure: The item is no longer available in the server address space. [...]
    }
}