SqlServer如何获取存储过程的返回值

转：https://www.cnblogs.com/xuliangxing/p/7356713.html

1.Output参数返回值

 1 CREATE PROCEDURE [dbo].[upInformation](
 2 @age int ,
 3 @id bigint OUTPUT
 4 )
 5 AS
 6 BEGIN
 7 SET NOCOUNT ON;
 8 BEGIN
 9 INSERT INTO [Information](age )
10 VALUES (@age )
11 SET @id = @@IDENTITY
12 END
13 END

存储过程中获得方法：

1 DECLARE @age int
2 DECLARE @id bigint
3 EXEC [upInformation] @age,@id output

2.Return过程返回值

 1 CREATE PROCEDURE [dbo].[upInformation](
 2 @age int ,
 3 @id bigint OUTPUT
 4 )
 5 AS
 6 BEGIN
 7 SET NOCOUNT ON;
 8 IF(EXISTS(SELECT * FROM [Shop] WHERE [s_id] = @age ))
 9 BEGIN
10  INSERT INTO [Information](age ) VALUES (@age ) 
11  SET @id = @@IDENTITY 
12  RETURN 1 — 插入成功返回1 
13 END 
14 ELSE 
15  RETURN 0 — 插入失败返回0 
16 END

存储过程中获得方法：

1 DECLARE @age int
2 DECLARE @id bigint
3 DECLARE @result bit
4 EXEC @result = [upInformation] @age ,id output

3.Select数据集返回值

1 CREATE PROCEDURE [dbo].[upInformation](
2 @id int
3 )
4 AS
5 BEGIN
6 SET NOCOUNT ON;
7 SELECT id,age FROM [Information]
8 WHERE id = @id
9 GO

存储过程中获得方法：(使用临时表)

1 CREATE TABLE [dbo].[Temp](
2 [id] [bigint] IDENTITY(1,1) NOT FOR REPLICATION NOT NULL,
3 [age] [int] NOT NULL
4 )
5 INSERT [Temp] EXEC [nb_order_select] @id
6 – 这时 Temp 就是EXEC执行SELECT 后的结果集
7 SELECT * FROM [Temp]
8 DROP [Temp] — 删除临时表

C#获取Return返回值

 1 SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["ConnStr"].ToString());
 2 conn.Open();
 3 SqlCommand MyCommand = new SqlCommand("upInformation", conn);  //存储过程名字
 4 MyCommand.CommandType = CommandType.StoredProcedure;　　　//指定类型为存储过程
 5 MyCommand.Parameters.Add(new SqlParameter("@a", SqlDbType.Int));
 6 MyCommand.Parameters["@a"].Value = 10;
 7 MyCommand.Parameters.Add(new SqlParameter("@b", SqlDbType.Int));
 8 MyCommand.Parameters["@b"].Value = 20;
 9 MyCommand.Parameters.Add(new SqlParameter("@return", SqlDbType.Int));
10 MyCommand.Parameters["@return"].Direction = ParameterDirection.ReturnValue;
11 MyCommand.ExecuteNonQuery();                //执行存储过程
12 Response.Write(MyCommand.Parameters["@return"].Value.ToString()); //取得return的返回值

C#获取Output输出参数值

 1 SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["ConnStr"].ToString());
 2 conn.Open();
 3 SqlCommand MyCommand = new SqlCommand("upInformation", conn);
 4 MyCommand.CommandType = CommandType.StoredProcedure;
 5 MyCommand.Parameters.Add(new SqlParameter("@a", SqlDbType.Int));
 6 MyCommand.Parameters["@a"].Value = 20;
 7 MyCommand.Parameters.Add(new SqlParameter("@b", SqlDbType.Int));
 8 MyCommand.Parameters["@b"].Value = 20;
 9 MyCommand.Parameters.Add(new SqlParameter("@c", SqlDbType.Int));
10 MyCommand.Parameters["@c"].Direction = ParameterDirection.Output;
11 MyCommand.ExecuteNonQuery();
12 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

 1  public static int Information(User us)
 2      {
 3          int iRet;
 4          SqlConnection conn = new SqlConnection(Conn_Str);
 5          SqlCommand cmd = new SqlCommand("upInformation", conn);
 6          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
 7          cmd.Parameters.AddWithValue("@UName", us.UName);
 8          cmd.Parameters.AddWithValue("@UPass", us.UPass);
 9          cmd.Parameters.AddWithValue("@PassQuestion", us.PassQuestion);
10          cmd.Parameters.AddWithValue("@PassKey", us.PassKey);
11          cmd.Parameters.AddWithValue("@Email", us.Email);
12          cmd.Parameters.AddWithValue("@RName", us.RName);
13          cmd.Parameters.AddWithValue("@Area", us.Area);
14          cmd.Parameters.AddWithValue("@Address", us.Address);
15          cmd.Parameters.AddWithValue("@ZipCodes", us.ZipCodes);
16          cmd.Parameters.AddWithValue("@Phone", us.Phone);
17          cmd.Parameters.AddWithValue("@QQ", us.QQ);
18          cmd.Parameters.Add("@RETURN_VALUE", "").Direction = ParameterDirection.ReturnValue;   //指定输出参数是返回值    
19          try
20          {
21              conn.Open();
22              cmd.ExecuteNonQuery();　　　　　　　　　　　　　　　　　　　//执行存储过程
23              iRet = (int)cmd.Parameters["@RETURN_VALUE"].Value;    //取得return的值
24          }
25          catch (SqlException ex)
26          {
27              throw ex;
28          }
29          finally
30          {
31              conn.Close();
32          }
33          return iRet;
34      }

C#接收存储过程的输出参数

 1 public static decimal Cart_UserAmount(int UID)
 2     {
 3         decimal iRet;
 4         SqlConnection conn = new SqlConnection(Conn_Str);
 5         SqlCommand cmd = new SqlCommand("Cart_UserAmount", conn);
 6         cmd.CommandType = CommandType.StoredProcedure;
 7         cmd.Parameters.AddWithValue("@UID", UID);
 8         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
 9         try
10         {
11             conn.Open();
12             cmd.ExecuteNonQuery();
13             iRet = (decimal)cmd.Parameters["@Amount"].Value;  //取得存储过程中的输出参数
14         }
15         catch (SqlException ex)
16         {
17             throw ex;
18         }
19         finally
20         {
21             conn.Close();
22         }
23         return iRet;
24     }

C#取得结果集

 1 string sqlw = string.Format("exec sp_UserInfo {0}", uid);
 2             DataTable dsuser = SqlConn.GetDataSet(sqlw).Tables[0];
 3 
 4  public static DataSet GetDataSet(string sql)
 5         {
 6             string connStr = System.Configuration.ConfigurationManager.ConnectionStrings["ConnStr"].ToString();
 7             SqlConnection conn = new SqlConnection(connStr);
 8             SqlCommand cmd = new SqlCommand(sql, conn);
 9             SqlDataAdapter da = new SqlDataAdapter(cmd);  //直接用SqlDataAdapter将结果集取出来放入dataset中
10             DataSet ds = new DataSet();
11             da.Fill(ds);
12             conn.Close();
13             cmd.Dispose();
14             return ds;
15         }