Retrieving Return value from stored procedure declaratively

Hi.

I have a stored procedure "sp1" which returns a value (with the sql statement Return @.ReturnValue).

Is it possible for my asp.net page to retrieve this return value, and to do it declaratively (meaning without writing code to connect to the database in the code behind). If it is possible to do it like this please tell me how, and if not please tell me how to do it with code.

Thanks in advance .

i do not know what will you sp return but i suppose that it is and INT

so you write this way;

int retrunvalue=sqlcommad.excutenonequery();

so the returned value will be passed to you int.

hope this will help

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this is sample code, it can help you:

Here is a sample sproc that populates output parameters
from the Northwind Products table:

CREATE PROCEDURE CustOrderOne
@.CustomerID nchar(5),
@.ProductName varchar(50) output,
@.Quantity int output

AS
SELECT TOP 1 @.ProductName=PRODUCTNAME, @.Quantity =quantity
FROM Products P, [Order Details] OD, Orders O, Customers C
WHERE C.CustomerID = @.CustomerID
AND C.CustomerID = O.CustomerID AND O.OrderID = OD.OrderID AND OD.ProductID = P.ProductID

And here is an example of some C# code to return and display the output parameters:

using System;
using System.Data;
using System.Data.SqlClient;
namespace OutPutParms
{
class OutputParams
{
[STAThread]
static void Main(string[] args)
{
using(SqlConnection cn = new SqlConnection("server=(local);Database=Northwind;user id=sa;password=;"))
{
SqlCommand cmd = new SqlCommand("CustOrderOne", cn);
cmd.CommandType=CommandType.StoredProcedure ;
SqlParameter parm=new SqlParameter("@.CustomerID",SqlDbType.NChar) ;
parm.Value="ALFKI";
parm.Direction =ParameterDirection.Input ;
cmd.Parameters.Add(parm);
SqlParameter parm2=new SqlParameter("@.ProductName",SqlDbType.VarChar);
parm2.Size=50;
parm2.Direction=ParameterDirection.Output;
cmd.Parameters.Add(parm2);
SqlParameter parm3=new SqlParameter("@.Quantity",SqlDbType.Int);
parm3.Direction=ParameterDirection.Output;
cmd.Parameters.Add(parm3);
cn.Open();
cmd.ExecuteNonQuery();
cn.Close();
Console.WriteLine(cmd.Parameters["@.ProductName"].Value);
Console.WriteLine(cmd.Parameters["@.Quantity"].Value.ToString());
Console.ReadLine();
}
}
}
}

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The above 2 replies does not actually get the return value, which is a special parameter.

The first reply returns the row affected count and the second reply just gets the value out output parameters.

I am afraid I do not know how to retrieve the return value declaratively using controls like object data sources.

However of you are familiar with using SqlCommands then the following code shows you how to get the return values from stored procedures assuming your stored procedure is returning values which is different to result sets, row counts, and output parameters.

SqlCommand cmd =new SqlCommand("this is the query", connection);//create a parameter for the return valueSqlParameter param =new SqlParameter();param.Direction = ParameterDirection.ReturnValue;param.ParameterName ="returnValue";//add to parameter to collectioncmd.Parameters.Add(param);//execute commandcmd.ExecuteNonQuery();//get the return valueint retVal =int.Parse(cmd.Parameters["returnValue"].Value.ToString);