C#中调用ORACLE的PACKAGE里方法和存储过程的应用
下面列举如何在C#中调用ORACLE的PACKAGE的东西,主要包括PACKAGE的方法和存储过程
一,首先在ORACLE里建立如下PACKAGE
PACKAGE分SPEC和body两部分.
1.SPEC是声明部分.
二.C#部分代码:
一,首先在ORACLE里建立如下PACKAGE
PACKAGE分SPEC和body两部分.
1.SPEC是声明部分.
CREATE OR REPLACE PACKAGE FirstPage is
type outlist is ref cursor;
Procedure p_get( maxrow in number, minrow in number, return_list out outlist );
function f_get(str in varchar2)return varchar2;
END FirstPage;
/
2.BODY是功能实现部分type outlist is ref cursor;
Procedure p_get( maxrow in number, minrow in number, return_list out outlist );
function f_get(str in varchar2)return varchar2;
END FirstPage;
/
CREATE OR REPLACE package body FirstPage is
Procedure p_get( maxrow in number, minrow in number, return_list out outlist )
is
begin
open return_list for
select * from (select a.*,rownum rnum from IPS_WL_INNOLUXPN a where rownum<=maxrow) where rnum >=minrow;
end ;
Function f_get(str in varchar2)
return varchar2
is
str_temp varchar2(200) := 'Good Luck!';
begin
str_temp := str_temp || str;
return str_temp;
end f_get;
end FirstPage;
/
以上,就在ORACLE里面建立了一个名字叫FIRSTPAGE的PACKAGE,这个PACKAGE里面有一个名叫P_GET的存储过程,它有3个参数,一个是maxrow,minrow是输入,result_list是个CURSOR,用来存放传回的数据集Procedure p_get( maxrow in number, minrow in number, return_list out outlist )
is
begin
open return_list for
select * from (select a.*,rownum rnum from IPS_WL_INNOLUXPN a where rownum<=maxrow) where rnum >=minrow;
end ;
Function f_get(str in varchar2)
return varchar2
is
str_temp varchar2(200) := 'Good Luck!';
begin
str_temp := str_temp || str;
return str_temp;
end f_get;
end FirstPage;
/
二.C#部分代码:
string connStr = "Data Source=E4MT;user id=mnt;password=mnt";
OracleConnection orcn = new OracleConnection(connStr);
//C# 調用Package中的Function
OracleCommand cmd = new OracleCommand("FIRSTPAGE.f_get",orcn);
cmd.CommandType = CommandType.StoredProcedure;
OracleParameter p1 = new OracleParameter("str",OracleType.VarChar,10);
p1.Direction = ParameterDirection.Input;
p1.Value = "Andy";
OracleParameter p2 = new OracleParameter("result",OracleType.VarChar,100);
p2.Direction = ParameterDirection.ReturnValue;
cmd.Parameters.Add(p1);
cmd.Parameters.Add(p2);
orcn.Open();
cmd.ExecuteNonQuery();
orcn.Close();
//C#調用Package中的Procedure
cmd = new OracleCommand("FIRSTPAGE.p_get",orcn);
cmd.CommandType = CommandType.StoredProcedure;
p1 = new OracleParameter("maxrow",OracleType.Number);
p1.Direction = ParameterDirection.Input;
p1.Value = 50;
p2 = new OracleParameter("minrow",OracleType.Number);
p2.Direction = ParameterDirection.Input;
p2.Value = 10;
OracleParameter p3 = new OracleParameter("return_list",OracleType.Cursor);
p3.Direction = ParameterDirection.Output;
cmd.Parameters.Add(p1);
cmd.Parameters.Add(p2);
cmd.Parameters.Add(p3);
DataTable dt = new DataTable();
OracleDataAdapter da = new OracleDataAdapter(cmd);
da.Fill(dt);
foreach(DataRow row in dt.Rows)
{
}
OracleConnection orcn = new OracleConnection(connStr);
//C# 調用Package中的Function
OracleCommand cmd = new OracleCommand("FIRSTPAGE.f_get",orcn);
cmd.CommandType = CommandType.StoredProcedure;
OracleParameter p1 = new OracleParameter("str",OracleType.VarChar,10);
p1.Direction = ParameterDirection.Input;
p1.Value = "Andy";
OracleParameter p2 = new OracleParameter("result",OracleType.VarChar,100);
p2.Direction = ParameterDirection.ReturnValue;
cmd.Parameters.Add(p1);
cmd.Parameters.Add(p2);
orcn.Open();
cmd.ExecuteNonQuery();
orcn.Close();
//C#調用Package中的Procedure
cmd = new OracleCommand("FIRSTPAGE.p_get",orcn);
cmd.CommandType = CommandType.StoredProcedure;
p1 = new OracleParameter("maxrow",OracleType.Number);
p1.Direction = ParameterDirection.Input;
p1.Value = 50;
p2 = new OracleParameter("minrow",OracleType.Number);
p2.Direction = ParameterDirection.Input;
p2.Value = 10;
OracleParameter p3 = new OracleParameter("return_list",OracleType.Cursor);
p3.Direction = ParameterDirection.Output;
cmd.Parameters.Add(p1);
cmd.Parameters.Add(p2);
cmd.Parameters.Add(p3);
DataTable dt = new DataTable();
OracleDataAdapter da = new OracleDataAdapter(cmd);
da.Fill(dt);
foreach(DataRow row in dt.Rows)
{
}