Hi,

I am wondering if someone could provide a sample code as how I can use

DataBasics.DataSources[""].ExecuteStoredProcedure(..)

 

My sproc takes 2 varchar input parameters and returns an integer value:

@HWID VARCHAR(250),

@ComputerName VARCHAR(250),

@iKassenId int OUTPUT

 

i want to execute the sproc and get the Result integer.

Thanks !

 

i tried it like that and get a NULLREFERENCE exception:

int iResult = 0;

System.Data.Common.DbParameter[] spParams = new System.Data.SqlClient.SqlParameter[2];

spParams[0].Value = "123123123";

spParams[1].Value = "Computer1";

iResult = (int)DataBasics.DataSources[""].ExecuteStoredProcedure("spK_KassenAnmeldung", DbCommandExecutionType.ExecuteScalar, spParams);

heres the complete code:

private static int KassenAnmeldung()

{

System.Data.Common.DbParameter[] spParams = new System.Data.SqlClient.SqlParameter[2];

spParams[0] = new System.Data.SqlClient.SqlParameter();

spParams[1] = new System.Data.SqlClient.SqlParameter();

spParams[0].ParameterName = "@HWID";

spParams[1].ParameterName = "@ComputerName";

spParams[0].Value = "123123123";

spParams[1].Value = "Computer1";

return (int)DataBasics.DataSources[""].ExecuteStoredProcedure("spK_KassenAnmeldung", DbCommandExecutionType.ExecuteScalar, spParams);

}

the stored procedure itself works. i tested it within sql management studio:

DECLARE @i int

EXEC @i= spK_KassenAnmeldung '123123123','Computer9';

select @i

Shorter Code, but same error:

private static int KassenAnmeldung()

{

return (int)DataBasics.DataSources[""].ExecuteStoredProcedure("spK_KassenAnmeldung", DbCommandExecutionType.ExecuteScalar, new System.Data.SqlClient.SqlParameter("@HWID", "123123123"),new System.Data.SqlClient.SqlParameter("@ComputerName", "Computer9"));

}

For some reason the Object returned by executestoredprocedure has a value of NULL.

Executing the same sproc on the sql management studio with the same parameters returns a nice integer value.

i dont get it ?

Hi Phillip,

Does your procedure run fine (and returns a nice integer value) when executed from within a BO?

And why not using a BO?
I've a lot of SP and Scalar functions on a SQL database, all in dbo schema, and I use any of my BOs (no one connecting on dbo schema) to run theses SP and functions (you need to grant exec in an intermediate SP, or execute as ..., and revert after execution)

HI Michel,

thanks for you reply. i dont know i it runs using a bo, and for this particular function i dont really want to use a bo.

i dont quite understand what you mean by:

From the Help-Document, the ExecuteStoredProcedure function is capable of doing what i want. i dont understand why i would need to use a bo for it. ?

Your code looks good. What is in your stored procedure?

I just made a test that comes accross fine using the StrataFrame sample. Here is my SF code:

And here is the alter for my stored procedure:

set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[GetCustomerLastName]
-- Add the parameters for the stored procedure here
@cust_pk int = 1
AS
BEGIN
-- Insert statements for procedure here
SELECT cust_LastName FROM Customers WHERE cust_pk = @cust_pk
END

 

Hi Dustin,

this is my sproc:

set ANSI_NULLS ON

set QUOTED_IDENTIFIER ON

GO

ALTER PROCEDURE [dbo].[spK_KassenAnmeldung]

@HWID VARCHAR(250),

@ComputerName VARCHAR(250)

AS

DECLARE @iKassenId int

SET @iKassenId = ( SELECT TOP 1 ID FROM tbKassen WHERE

HWID = @HWID AND ComputerName = @ComputerName );

IF ( @iKassenId IS NULL )

BEGIN

DECLARE @iKassenNr int;

SET @iKassenNr = ( SELECT count(*) FROM tbKassen );

INSERT INTO tbKassen (Bezeichnung, Zyklus, HWID, ComputerName)

VALUES ('Kasse'+LTRIM(STR(@iKassenNr)) , 0, @HWID, @ComputerName);

SET @iKassenId = SCOPE_IDENTITY();

END

RETURN @iKassenId

I'm wondering if the problem is that you are using Return instead of Select. My understanding is that Return is used to return a status code, while you'd use Select to return a record set, which ExecuteScalar will then retrieve data from. So change:







to







and see if that works. I'm guessing that since you don't select anything, either null or DdNull.Value is being returned from execute scalar.



You might also want to check for conditions like this in code. Something like:

hi,

thanks. that seems like it could be the problem. i wasnt aware of the use of select instead of return.

i will try changing it when i get back to work tommorow.