EventInstance.cs

using System.ComponentModel;

namespace System.Diagnostics
{
    public class EventInstance
    {
        private int _categoryNumber;

        private EventLogEntryType _entryType = EventLogEntryType.Information;

        private long _instanceId;

        public int CategoryId
        {
            get
            {
                return _categoryNumber;
            }
            set
            {
                if (value > 65535 || value < 0)
                {
                    throw new ArgumentOutOfRangeException("value");
                }
                _categoryNumber = value;
            }
        }

        public EventLogEntryType EntryType
        {
            get
            {
                return _entryType;
            }
            set
            {
                if (!Enum.IsDefined(typeof(EventLogEntryType), value))
                {
                    throw new InvalidEnumArgumentException("value", (int)value, typeof(EventLogEntryType));
                }
                _entryType = value;
            }
        }

        public long InstanceId
        {
            get
            {
                return _instanceId;
            }
            set
            {
                if (value > uint.MaxValue || value < 0)
                {
                    throw new ArgumentOutOfRangeException("value");
                }
                _instanceId = value;
            }
        }

        public EventInstance(long instanceId, int categoryId)
        {
            CategoryId = categoryId;
            InstanceId = instanceId;
        }

        public EventInstance(long instanceId, int categoryId, EventLogEntryType entryType)
            : this(instanceId, categoryId)
        {
            EntryType = entryType;
        }
    }
}