public bool IsNameTaken(string name) { DataTable dt = new DataTable(); if (name.Equals(string.Empty) || name.Equals("")) { throw new ArgumentOutOfRangeException(); } using (SqlCommand command = new SqlCommand()) { dt = GetMultipleQuery(UserStringsSql.IsNameTaken(name)); } int num = 0; foreach (DataRow ms in dt.Rows) { num = int.Parse(ms[0].ToString()); } if (num == 0) { return(false); } else { return(true); } }