unit-of-work.cs

public class UnitOfWork
{
    private readonly MongoDataContext _dataContext;

    public UserRepository Users { get; private set; }

    public UnitOfWork(MongoDataContext dataContext)
    {
        _dataContext = dataContext;

        Users = new UserRepository(dataContext);
    }

    public bool CheckConnection()
    {
        try
        {
            _dataContext.Database.ListCollections();
        }
        catch (System.Exception)
        {
            return false;
        }

        return true;
    }
}