SqlServer获取存储过程返回值的实例

1.ouput参数返回值

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：

declare @o_buyerid int
declare @o_id bigint
exec [nb_order_insert] @o_buyerid,@o_id output

2.return过程返回值

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

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

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

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

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

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:

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:

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：

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;
        }