// This example shows how to enumerate all event categories provided by the OPC server. For each category, it displays its Id 
// and description.

using System;
using System.Diagnostics;
using OpcLabs.EasyOpc.AlarmsAndEvents;
using OpcLabs.EasyOpc.AlarmsAndEvents.AddressSpace;
using OpcLabs.EasyOpc.OperationModel;

namespace DocExamples.AlarmsAndEvents._EasyAEClient
{
    class QueryEventCategories 
    { 
        public static void Main1()
        {
            // Instantiate the client object.
            var client = new EasyAEClient();

            AECategoryElementCollection categoryElements;
            try
            {
                categoryElements = client.QueryEventCategories("", "OPCLabs.KitEventServer.2");
            }
            catch (OpcException opcException)
            {
                Console.WriteLine("*** Failure: {0}", opcException.GetBaseException().Message);
                return;
            }

            foreach (AECategoryElement categoryElement in categoryElements)
            {
                Debug.Assert(categoryElement != null);
                Console.WriteLine("CategoryElements[\"{0}\"].Description: {1}", categoryElement.CategoryId, categoryElement.Description);
            }
        }
    } 
}

// This example shows information available about OPC event category.

using System;
using System.Diagnostics;
using OpcLabs.EasyOpc.AlarmsAndEvents;
using OpcLabs.EasyOpc.AlarmsAndEvents.AddressSpace;
using OpcLabs.EasyOpc.OperationModel;

namespace DocExamples.AlarmsAndEvents._AECategoryElement 
{ 
    class Properties 
    { 
        public static void Main1()
        {
            // Instantiate the client object.
            var client = new EasyAEClient();

            AECategoryElementCollection categoryElements;
            try
            {
                categoryElements = client.QueryEventCategories("", "OPCLabs.KitEventServer.2");
            }
            catch (OpcException opcException)
            {
                Console.WriteLine("*** Failure: {0}", opcException.GetBaseException().Message);
                return;
            }

            foreach (AECategoryElement categoryElement in categoryElements)
            {
                Debug.Assert(!(categoryElement is null));

                Console.WriteLine("Information about category {0}:", categoryElement);
                Console.WriteLine("    .CategoryId: {0}", categoryElement.CategoryId);
                Console.WriteLine("    .Description: {0}", categoryElement.Description);
                Console.WriteLine("    .ConditionElements:");
                if (!(categoryElement.ConditionElements.Keys is null))
                    foreach (string conditionKey in categoryElement.ConditionElements.Keys)
                        Console.WriteLine("        {0}", conditionKey);
                Console.WriteLine("    .AttributeElements:");
                if (!(categoryElement.AttributeElements.Keys is null))
                    foreach (long attributeKey in categoryElement.AttributeElements.Keys)
                        Console.WriteLine("        {0}", attributeKey);
            }
        }
    } 
}