1.ouput参数返回值
复制代码 代码如下:
create procedure [dbo].[nb_order_insert](
@o_buyerid int ,
@o_id bigint output
)
as
begin
set nocount on;
begin
insert into [order](o_buyerid )
values (@o_buyerid )
set @o_id = @@identity
end
end
存储过程中获得方法：
复制代码 代码如下:
declare @o_buyerid int
declare @o_id bigint
exec [nb_order_insert] @o_buyerid,@o_id output
2.return过程返回值
复制代码 代码如下:
create procedure [dbo].[nb_order_insert](
@o_buyerid int ,
@o_id bigint output
)
as
begin
set nocount on;
if(exists(select * from [shop] where [s_id] = @o_buyerid ))
begin
insert into [order](o_buyerid ) values (@o_buyerid )
set @o_id = @@identity
return 1 — 插入成功返回1
end
else
return 0 — 插入失败返回0 end
存储过程中的获取方法
复制代码 代码如下:
declare @o_buyerid int
declare @o_id bigint
declare @result bit
exec @result = [nb_order_insert] @o_buyerid ,o_id output
3.select 数据集返回值
复制代码 代码如下:
create procedure [dbo].[nb_order_select](
@o_id int
)
as
begin
set nocount on;
select o_id,o_buyerid from [order]
where o_id = @o_id
go
存储过程中的获取方法
（1）、使用临时表的方法
复制代码 代码如下:
create table [dbo].[temp](
[o_id] [bigint] identity(1,1) not for replication not null,
[o_buyerid] [int] not null
)
insert [temp] exec [nb_order_select] @o_id
– 这时 temp 就是exec执行select 后的结果集
select * from [temp]
drop [temp] — 删除临时表
1.获取return返回值
复制代码 代码如下:
sqlconnection conn = new sqlconnection(configurationmanager.connectionstrings[“connstr”].tostring());
conn.open();
sqlcommand mycommand = new sqlcommand(“nb_order”, conn); //存储过程名字
mycommand.commandtype = commandtype.storedprocedure; //指定类型为存储过程
mycommand.parameters.add(new sqlparameter(“@a”, sqldbtype.int));
mycommand.parameters[“@a”].value = 10;
mycommand.parameters.add(new sqlparameter(“@b”, sqldbtype.int));
mycommand.parameters[“@b”].value = 20;
mycommand.parameters.add(new sqlparameter(“@return”, sqldbtype.int));
mycommand.parameters[“@return”].direction = parameterdirection.returnvalue;
mycommand.executenonquery(); //执行存储过程
response.write(mycommand.parameters[“@return”].value.tostring()); //取得return的返回值
2.获取output输出参数值
复制代码 代码如下:
sqlconnection conn = new sqlconnection(configurationmanager.connectionstrings[“connstr”].tostring());
conn.open();
sqlcommand mycommand = new sqlcommand(“nb_order”, conn);
mycommand.commandtype = commandtype.storedprocedure;
mycommand.parameters.add(new sqlparameter(“@a”, sqldbtype.int));
mycommand.parameters[“@a”].value = 20;
mycommand.parameters.add(new sqlparameter(“@b”, sqldbtype.int));
mycommand.parameters[“@b”].value = 20;
mycommand.parameters.add(new sqlparameter(“@c”, sqldbtype.int));
mycommand.parameters[“@c”].direction = parameterdirection.output;
mycommand.executenonquery();
response.write(mycommand.parameters[“@c”].value.tostring()); //指定取得存储过程的返回值
c#接收存储过程返回值:
复制代码 代码如下:
public static int user_add(user us)
{
int iret;
sqlconnection conn = new sqlconnection(conn_str);
sqlcommand cmd = new sqlcommand(“user_add”, conn);
cmd.commandtype = commandtype.storedprocedure; //指定存储过程 addwithvalue可以指定名称和值，而add需要指定名称，类型，再给value
cmd.parameters.addwithvalue(“@uname”, us.uname);
cmd.parameters.addwithvalue(“@upass”, us.upass);
cmd.parameters.addwithvalue(“@passquestion”, us.passquestion);
cmd.parameters.addwithvalue(“@passkey”, us.passkey);
cmd.parameters.addwithvalue(“@email”, us.email);
cmd.parameters.addwithvalue(“@rname”, us.rname);
cmd.parameters.addwithvalue(“@area”, us.area);
cmd.parameters.addwithvalue(“@address”, us.address);
cmd.parameters.addwithvalue(“@zipcodes”, us.zipcodes);
cmd.parameters.addwithvalue(“@phone”, us.phone);
cmd.parameters.addwithvalue(“@qq”, us.qq);
cmd.parameters.add(“@return_value”, “”).direction = parameterdirection.returnvalue; //指定输出参数是返回值
try
{
conn.open();
cmd.executenonquery(); //执行存储过程
iret = (int)cmd.parameters[“@return_value”].value; //取得return的值
}
catch (sqlexception ex)
{
throw ex;
}
finally
{
conn.close();
}
return iret;
}
c#接收存储过程的输出参数:
复制代码 代码如下:
public static decimal cart_useramount(int uid)
{
decimal iret;
sqlconnection conn = new sqlconnection(conn_str);
sqlcommand cmd = new sqlcommand(“cart_useramount”, conn);
cmd.commandtype = commandtype.storedprocedure;
cmd.parameters.addwithvalue(“@uid”, uid);
cmd.parameters.add(“@amount”, sqldbtype.decimal).direction=parameterdirection.output; //利用add方法为其添加名称，类型和输出参数
try
{
conn.open();
cmd.executenonquery();
iret = (decimal)cmd.parameters[“@amount”].value; //取得存储过程中的输出参数
}
catch (sqlexception ex)
{
throw ex;
}
finally
{
conn.close();
}
return iret;
}
c#取得结果集：
复制代码 代码如下:
string sqlw = string.format(“exec sp_userinfo {0}”, uid);
datatable dsuser = sqlconn.getdataset(sqlw).tables[0];
public static dataset getdataset(string sql)
{
string connstr = system.configuration.configurationmanager.connectionstrings[“connstr”].tostring();
sqlconnection conn = new sqlconnection(connstr);
sqlcommand cmd = new sqlcommand(sql, conn);
sqldataadapter da = new sqldataadapter(cmd); //直接用sqldataadapter将结果集取出来放入dataset中
dataset ds = new dataset();
da.fill(ds);
conn.close();
cmd.dispose();
return ds;
}