slarny4/Demo1/Data/Exceptions/RepositoryException.cs

// C:\Users\adm\Source\Repos\presence1\Demo\Data\Exceptions\RepositoryException.cs
using System;

namespace Demo.Data.Exceptions
{
    public class RepositoryException : Exception
    {
        public RepositoryException(string message)
            : base(message)
        {
        }
    }
}