cmd=conn.CreateCommand();
cmd.CommandText="select * from
MyTable";//在这儿写sql语句
OracleDataReader
odr=cmd.ExecuteReader();//创建一个OracleDateReader对象
while(odr.Read())//读取数据，如果odr.Read()返回为false的话，就说明到记录集的尾部了
{
Response.Write(odr.GetOracleString(1).ToString());//输出字段1，这个数是字段索引，具体怎么使用字段名还有待研究
}
odr.Close();
}
catch(Exception ee)
{
Response.Write(ee.Message); //如果有错误，输出错误信息
}
finally
{
conn.Close(); //关闭连接
}
}
4.C#连接MySQL
程序代码:
using MySQLDriverCS;
// 建立数据库连接
MySQLConnection DBConn;
DBConn = new MySQLConnection(new
MySQLConnectionString("localhost","mysql","root","",3306).AsString);
DBConn.Open();
// 执行查询语句
MySQLCommand DBComm;
DBComm = new MySQLCommand("select Host,User from
user",DBConn);
// 读取数据
MySQLDataReader DBReader
= DBComm.ExecuteReaderEx();
// 显示数据
try
{
while (DBReader.Read())
{
Console.WriteLine("Host =
{0} and User = {1}", DBReader.GetString(0),DBReader.GetString(1));
}
}
finally
{
DBReader.Close();
DBConn.Close();
}
//关闭数据库连接
DBConn.Close();
5.C#连接IBM DB2
程序代码:
