SELECT COUNT(*) from  poster;
select
    t.PosterID,
    t.PostTime,
    t.Title
 from app_us_poster t ORDER BY t.PostTime desc LIMIT startPageNum,endPageNum;

public Task<int> FillAsync(DataTable dataTable, IDataReader dataReader);

public Task<int> FillAsync(DataTable dataTable, IDataReader dataReader, CancellationToken cancellationToken)

/// <summary>
/// 讀取多個返回集，返回List<DataTable>
/// </summary>
/// <param name="StoredName"></param>
/// <param name="Parameters"></param>
/// <returns></returns>
public List<DataTable> StroedGetTableList(string StoredName, List<sqlparameters> Parameters)
{

    MySqlDataAdapter mysqldata = new MySqlDataAdapter();
    MySqlCommand sqlCommand = new MySqlCommand();
    sqlCommand.CommandText = StoredName;//存儲過程名稱
    sqlCommand.CommandType = CommandType.StoredProcedure;
    sqlCommand.Connection = conn;

    for (int i = 0; i < Parameters.Count; i++)
    {
 sqlCommand.Parameters.AddWithValue(Parameters[i].name, Parameters[i].pvalue);
    }
    conn.Open();
    List<DataTable> dts = new List<DataTable>();
    MySqlDataReader mysqlreser = sqlCommand.ExecuteReader();//mysqlreader無構造函數(shù)
    bool re = true;
    System.Threading.CancellationToken _cts;//用于Cancel用的
    while (re)
    {
 DataTable dt = new DataTable();
 mysqldata.FillAsync(dt, mysqlreser).Wait(_cts);//等待線程完成
   dts.Add(dt);
 re = mysqlreser.NextResult();//取下一個結果集
      //  Trace.WriteLine(dt.Rows.Count);       

    }
    conn.Close();
    return dts;
}

mysqldata.FillAsync(dt, mysqlreser).Wait(_cts);//等待線程完成

public struct sqlparameters
{
        public string name;//存儲過程的輸入字符名稱
        public object pvalue;//存儲過程的輸入變量
        public sqlparameters(string names, object pvalues)
        {
            name = names;
            pvalue = pvalues;
        }
}