獲取存儲過程返回值及代碼中獲取返回值 1.OUPUT參數返回值
例： 向Order表插入一條記錄,返回其標識

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
存儲過程中獲得方法：

DECLARE?@o_buyerid?int
DECLARE?@o_id?bigint
EXEC?[nb_order_insert]?@o_buyerid?,o_id?bigint
2.RETURN過程返回值

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
RETURN?1?—?插入成功返回1
END
ELSE
RETURN?0?—?插入失敗返回0
END
存儲過程中的獲取方法
DECLARE?@o_buyerid?int
DECLARE?@o_id?bigint
DECLARE?@result?bit
EXEC?@result?=?[nb_order_insert]?@o_buyerid?,o_id?bigint?
3.SELECT 數據集返回值

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
存儲過程中的獲取方法
（1）、使用臨時表的方法

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
–?這時?Temp?就是EXEC執行SELECT?后的結果集
SELECT?*?FROM?[Temp]
DROP?[Temp]?—?刪除臨時表
（2）、速度不怎么樣.（不推薦）

SELECT?*?from?openrowset(’provider_name','Trusted_Connection=yes’,'exec?nb_order_select’)

1.獲取Return返回值

?程序代碼 //存儲過程
//Create PROCEDURE MYSQL
//???? @a int,
//???? @b int
//AS
//???? return @a + @b
//GO
SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["LocalSqlServer"].ToString());
conn.Open();
SqlCommand MyCommand = new SqlCommand("MYSQL", conn);
MyCommand.CommandType = 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.獲取Output輸出參數值

?程序代碼 //存儲過程
//Create PROCEDURE MYSQL
//???? @a int,
//???? @b int,
//???? @c int output
//AS
//???? Set @c = @a + @b
//GO
SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["LocalSqlServer"].ToString());
conn.Open();
SqlCommand MyCommand = new SqlCommand("MYSQL", 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());

C#接收存儲過程返回值:

???? 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;
???????? 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#接收存儲過程輸出參數:

??? 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;
??????? try
??????? {
??????????? conn.Open();
??????????? cmd.ExecuteNonQuery();
????????????iRet = (decimal)cmd.Parameters["@Amount"].Value;
??????? }
??????? catch (SqlException ex)
??????? {
??????????? throw ex;
??????? }
??????? finally
??????? {
??????????? conn.Close();
??????? }
??????? return iRet;
??? }

轉載于:https://www.cnblogs.com/laopo/p/4456303.html

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