Dry data: Final version of the client

Client5.cs

public class Client5
{
    private readonly Database _db;

    public Client5(Database db)
    {
        _db = db;
    }

    public IEnumerable<User> GetCompanyUsers(string company)
    {
        return _db.ExecuteReader(
            "spGetCompanyUsers",
            sp => sp["@companyName", company],
            r => new User
                     {
                         Id = (string) r["id"],
                         UserName = (string) r["user"],
                         Name = (string) r["name"],
                         Email = (string) r["emailAddress"],
                         Phone = (string) r["cellPhone"],
                         ZipCode = (string) r["zip"]
                     });
    }

    public string GetUserEmail(string userId)
    {
        return _db.ExecuteScalar(
            "spGetEmailForUser",
            sp => sp["@userId", userId],
            o => o as string);
    }

    public void StoreUser(User u)
    {
        _db.ExecuteNonQuery(
            "spInsertOrUpdateUser",
            sp => sp["@userId", u.Id]
                    ["@user", u.UserName]
                    ["@name", u.Name]
                    ["@emailAddress", u.Email]
                    ["@cellPhone", u.Phone]
                    ["@zip", u.ZipCode]);
    }
}