c# get first or default value in generic method

GET_FIRST_OR_DEFAULT.cs

public T GET_FIRST_OR_DEFAULT<T>(DataSet dataset)
        {
            return GET_FIRST_OR_DEFAULT<T>(dataset, default(T));
        }
        public T GET_FIRST_OR_DEFAULT<T>(DataSet dataset, T defaultValue)
        {
            bool status = true;
            if (dataset.Tables.Count == 0)
            {
                status = false;
            }
            if (status && dataset.Tables[0].Rows.Count == 0)
            {
                status = false;
            }
            if (status)
            {
                return (T)Convert.ChangeType(
                    dataset.Tables[0].Rows[0][0].ToString()
                    , typeof(T));
            }
            else
            {
                return defaultValue;
            }
        }