获取存储过程中的返回值

1.OUPUT参数返回值
例：向Order表插入一条记录,返回其标识
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 bigint
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_shopid)) BEGIN
INSERT INTO[Order](o_buyerid )
VALUES (@o_buyerid )
SET@o_id=@@IDENTITY
RETURN1—插入成功返回1
END
ELSE
RETURN0—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 bigint
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
（2）、速度不怎么样.（不推荐）
SELECT*from openrowset(’provider_name','Trusted_Connection=yes’,'exec nb _order_select’)
1.获取Return返回值
程序代码
//存储过程
//Create PROCEDURE MYSQL
// @a int,
// @b int
//AS
// return @a + @b
//GO
SqlConnection conn = new
SqlConnection(ConfigurationManager.ConnectionStrings["LocalSqlServer"].ToStrin g());
conn.Open();
SqlCommandMyCommand = new SqlCommand("MYSQL", conn); mandType = CommandType.StoredProcedure; 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();
Response.Write(MyCommand.Parameters["@return"].Value.ToString());
2.获取Output输出参数值
程序代码
//存储过程
//Create PROCEDURE MYSQL
// @a int,
// @b int,
// @c int output
//AS
// Set @c = @a + @b
//GO
SqlConnection conn = new
SqlConnection(ConfigurationManager.ConnectionStrings["LocalSqlServer"].ToStrin g());
conn.Open();
SqlCommandMyCommand = new SqlCommand("MYSQL", conn); mandType = 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());
C#接收存储过程返回值:
public static intUser_Add(User us)
{
intiRet;
SqlConnection conn = new SqlConnection(Conn_Str);
SqlCommandcmd = new SqlCommand("User_Add", conn);
mandType = CommandType.StoredProcedure;
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;
try
{
conn.Open();
cmd.ExecuteNonQuery();
iRet = (int)cmd.Parameters["@RETURN_VALUE"].Value;
}
catch (SqlException ex)
{
throw ex;
}
finally
{
conn.Close();
}
return iRet;
}
C#接收存储过程输出参数:
public static decimal Cart_UserAmount(int UID)
{
decimal iRet;
SqlConnection conn = new SqlConnection(Conn_Str);
SqlCommandcmd = new SqlCommand("Cart_UserAmount", conn);
mandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@UID", UID);
cmd.Parameters.Add("@Amount",
SqlDbType.Decimal).Direction=ParameterDirection.Output;
try
{
conn.Open();
cmd.ExecuteNonQuery();
iRet = (decimal)cmd.Parameters["@Amount"].Value;
}
catch (SqlException ex)
{
throw ex;
}
finally
{
conn.Close();
}
return iRet;
}。