将DataRow[]转换成DataTable

public DataTable ToDataTable(DataRow[] rows)
        {
            if (rows == null || rows.Length == 0) return null;
            DataTable tmp = rows[0].Table.Clone();  // 复制DataRow的表结构
            foreach (DataRow row in rows)
                tmp.Rows.Add(row.ItemArray);  // 将DataRow添加到DataTable中
            return tmp;
        }