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{
SqlConnection cnn = new SqlConnection
("context connection=true");
cnn.Open();
SqlCommand cmd = new SqlCommand();
cmd.Connection = cnn;
cmd.CommandText = "select * from customers";
SqlDataReader reader = cmd.ExecuteReader();
SqlContext.Pipe.Send(reader);
reader.Close();
cnn.Close();
}
Õâ¸öGetAllCustomers()·½·¨ÓÃÁËÒ»¸ö[SqlProcedure]ÊôÐÔÀ´ÐÞÊΡ£ ÔÚ·½·¨ÄÚ´´½¨Ò»¸öSqlConnectionºÍÒ»¸öSqlCommand¶ÔÏó¡£ È»ºóʹÓÃExecuteReader()·½·¨À´Ö´ÐÐSELECTÓï¾ä¡£ ½ÓÏÂÀ´ÓÃSend()·½·¨½«È¡µÃµÄSqlDataReaderÊý¾Ý·¢Ë͵½¿Í»§¶Ë¡£ ×îºó¾ÍÊǹرÕSqlDataReaderºÍSqlConnection¡£ ÔÚÕâÖÖ·½·¨ÖУ¬ÊÇÎÒÃÇ×Ô¼º´´½¨µÄSqlDataReader¡£ Æäʵ£¬ÎÒÃÇÒ²Äܹ»°ÑÕâ¸öÈÎÎñ½»¸øSqlContextÀàÈ¥Íê³É£¬´úÂëÈçÏ£º
[SqlProcedure]
public static void GetCustomerByID
(SqlString CustomerID)
{
SqlConnection cnn = new SqlConnection
("context connection=true");
cnn.Open();
SqlCommand cmd = new SqlCommand();
cmd.Connection = cnn;
cmd.CommandText = "select * from customers
where customerid=@p1";
SqlParameter p1 = new SqlParameter("@p1", CustomerID); °æÈ¨ÉêÃ÷£º±¾Õ¾ÎÄÕ¾ùÀ´×ÔÍøÂç.
cmd.Parameters.Add(p1);
SqlContext.Pipe.ExecuteAndSend(cmd);
cnn.Close();
}
GetCustomerByID()·½·¨ÐèÒªÒ»¸ö²ÎÊý – CustomerID£¬Ëû½«´ÓCustomers±íÖзµ»ØÄ³¸öcustomerµÄ¼Ç¼¡£ Õâ¸ö·½·¨ÄڵĴúÂ룬³ýÁËExecuteAndSend()·½·¨Í⣬ÄúÓ¦¸Ã¶¼ÒѱȽÏÊìϤÁË¡£ ExecuteAndSend()·½·¨½ÓÊÕÒ»¸öSqlCommand¶ÔÏó×÷Ϊ²ÎÊý£¬Ö´ÐÐËû¾Í»á·µ»ØÊý¾Ý¼¯¸ø¿Í»§¶Ë¡£ .¡¡
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[SqlProcedure]
public static void GetCompanyName
(SqlString CustomerID,out SqlString CompanyName)
{
SqlConnection cnn = new SqlConnection
("context connection=true");
cnn.Open();
SqlCommand cmd = new SqlCommand();
cmd.Connection = cnn;
cmd.CommandText = "select companyname from
customers where customerid=@p1";
SqlParameter p1 = new SqlParameter
("@p1", CustomerID);
cmd.Parameters.Add(p1);
object obj = cmd.ExecuteScalar();
cnn.Close();
CompanyName =
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