C#擷取預存程序傳回值和輸出參數值的方法

這篇文章主要介紹了C#擷取預存程序傳回值和輸出參數值的方法，有需要的朋友可以參考一下

1.擷取Return傳回值

複製代碼代碼如下:
//預存程序
//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.擷取Output輸出參數值

複製代碼代碼如下:
//預存程序
//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#接收預存程序傳回值:

複製代碼代碼如下:
     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;
         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#接收預存程序輸出參數:

複製代碼代碼如下:
    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;
        try
        {
            conn.Open();
            cmd.ExecuteNonQuery();
            iRet = (decimal)cmd.Parameters["@Amount"].Value;
        }
        catch (SqlException ex)
        {
            throw ex;
        }
        finally
        {
            conn.Close();
        }
        return iRet;
    }

轉載：http://www.jb51.net/article/45342.htm

1.運用Command對象

[c-sharp]  view plain copy SqlConnection con = new SqlConnection(constring);//constring是連接字串   con.Open();   string sql = "myproc";   //預存程序名稱myproc   SqlCommand com = new SqlCommand(sql,con);   //設定Command對象的類型   com.CommandType = CommandType.StoredProcedure;   SqlParameter output =               com.Parameters.Add("@i", SqlDbType.Int);  //添加參數   //設定參數類型   output.Direction = ParameterDirection.Output;   //執行   com.ExecuteNonQuery();               //擷取輸出參數值對介面文體框   this.textBox1.Text = (output.Value).ToString();   //另一種寫法   //this.textBox1.Text = com.Parameters["@i"].Value.ToString();   con.Close();  

 

2.運用DataAdapter對象

[c-sharp]  view plain copy DataSet ds = new DataSet();   string sql = "myproc";   //預存程序名稱myproc   SqlDataAdapter da = new SqlDataAdapter(sql, con);   //添加參數   SqlParameter accp =           da.SelectCommand.Parameters.Add("@i", SqlDbType.Int);   //設定參數類型   accp.Direction = ParameterDirection.Output;  &nbs