Blog-BasicCustomException.md

using System;
using System.Runtime.Serialization;

// ...

[Serializable]
public class EntityNotFoundException : Exception
{
    private const string DefaultMessage = "Entity does not exist.";

    public EntityNotFoundException() : base(DefaultMessage)
    {
    }

    public EntityNotFoundException(string message) : base(message)
    {
    }

    public EntityNotFoundException(string message, Exception innerException) : base(message, innerException)
    {
    }

    protected EntityNotFoundException(SerializationInfo info, StreamingContext context)
        : base(info, context)
    {
    }
}