使用SqlDataReader处理多个结果集
// 使用SqlDataReader处理多个结果集
// MultipleResults.cs
using System;
using System.Data;
using System.Data.SqlClient;
namespace Ch12
{
class MultipleResults
{
static void Main( string[] args)
{
string strConn = "server=.\\MSSQL2012;integrated security=true;database=Northwind;";
string sqla = "select firstname, lastname from employees;" ;
string sqlb = "select RegionID, RegionDescription from Region;";
string sql = sqla + sqlb;
SqlConnection conn = new SqlConnection(strConn);
try
{
conn.Open();
SqlCommand cmd = new SqlCommand(sql, conn);
SqlDataReader rdr = cmd.ExecuteReader();
// 循环处理结果集
do
{
while (rdr.Read())
{
Console.WriteLine( "{0} : {1}", rdr[0], rdr[1]);
}
Console.WriteLine( "".PadLeft(20,'-' ));
}
while (rdr.NextResult());
rdr.Close();
}
catch ( Exception ex)
{
Console.WriteLine( "发生错误:" + ex);
}
finally
{
conn.Close();
Console.ReadLine();
}
}
}
}
--------------------
Nancy : Davolio
Andrew : Fuller
Janet : Leverling
Margaret : Peacock
Steven : Buchanan
Michael : Suyama
Robert : King
Laura : Callahan
Anne : Dodsworth
--------------------
1 : Eastern
2 : Western
3 : Northern
4 : Southern
--------------------
