Access The Value Of An Output Parameter From Your ASP.NET Application Using C#

Mar 13, 2008

I have the below procedure with an output parameter '@rowcount'. Now My issue is how to access the value of '@rowcount' in my ASP.Net application using C#. I have also pasted my C# code which I am using .

create procedure mypro1(@id varchar(10),@rowcount int output)

as

select * from canid where id like @id

/* @@ROWCOUNT returns the number of rows that are affected by the last statement. */

select @rowcount=@@rowcount

--------------------------------------------------

C# code to retrieve the output parameter valuecmd = new SqlCommand("mypro1", cn);

cmd.CommandType = CommandType.StoredProcedure;cmd.Parameters.AddWithValue("@id", TextBox1.Text).Direction=ParameterDirection.Input;

Parameter cout = new Parameter("@rowcount",SqlDbType.Int);cout.Direction = ParameterDirection.Output;

cmd.Parameters.Add(cout);

can some body assist me in the above code whether its right or what needs to be added to get the output parameter value.

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Return Resultset As Output Parameter To VB Application

Nov 27, 2014

I need to return a resultset consisting of database errors from SQL Server stored procedure's CATCH CLAUSE but stuck with it. Do I need to use cursors to return resultset and if so, then what is the type declaration for the OUTPUT parameter in my .NET application? I tried 'Object' and 'Variant' but did not work.

I also tried the simple way just using a SELECT statement to return and it works with one stored procedure but not with another as thus in my CATCH CLAUSE:

Code:
while (@I <= @count)
begin
BEGIN TRY
-- delete all previous rows inserted in @customerRow for previous counts @I
delete from @customerRow
-- this is inserting the current row that we want to save in database
insert into @customerRow

[Code] .....

This does not work when select is made in the CATCH block, ie it returns no rows to my .NET application:

Code:
begin catch
IF @@TranCount > 0 or XACT_STATE()= -1 ROLLBACK TRANSACTION;
DECLARE @ErrorMessage NVARCHAR(4000);
DECLARE @ErrorSeverity INT;
DECLARE @ErrorState INT;
DECLARE @ErrorLine INT;
SELECT @ErrorMessage = ERROR_MESSAGE();

[Code] ....

Just to summarize the code and where the problem is. The code that works uses a SELECT * from temporary table not in the CATCH block and this works while the one that uses the same SELECT * from temporary table inside the CATCH does not return anything! Strange. The Wrong one is used in another Stored procedure from the Right one btw so am wondering why the same code does not work in those two different situations.

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I am using SQL Express 2005 and VB .net Express.

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Hello,

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The sp is declared with 21 input params only, none of them is @ReportingId. It declares @ReportingId as a bigint variable and uses it in the beginning of the proc as follows...




Code Snippet
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EffectiveEndDate is null

if @ReportingId is null
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Code Snippet
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else
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ELSE
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my asp code is something like this:

...
SqlCommand sqlcmdInsertNewsArticle = new SqlCommand(insertCmd, sqlconCon);

sqlcmdInsertNewsArticle.Parameters.Add(new SqlParameter("@strHeading", SqlDbType.NVarChar, 300));
sqlcmdInsertNewsArticle.Parameters["@strHeading"].Value = strHeading.Text;

sqlcmdInsertNewsArticle.Parameters.Add(new SqlParameter("@strAbstract", SqlDbType.NVarChar, 600));
sqlcmdInsertNewsArticle.Parameters["@strAbstract"].Value = strAbstract.Text;

sqlcmdInsertNewsArticle.Parameters.Add(new SqlParameter("@strText", SqlDbType.NVarChar, 4000));
sqlcmdInsertNewsArticle.Parameters["@strText"].Value = strText.Text;

...

sqlcmdInsertNewsArticle.Connection.Open();
sqlcmdInsertNewsArticle.ExecuteNonQuery();
sqlcmdInsertNewsArticle.Connection.Close();


How do I do if I want to catch the OUTPUT-parameter (@uidArticleId)?

anyone?

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May 2, 2005

I'm having a terrible time getting a return value from my stored procedure. The sp sets the value  and returns it correctly in the query analyzer, but I can't get the calling code - using VB in VS2003 - to read the value.  I've tried putting it into an integer, and using a Return, and also putting it into a string, and using an output parameter.  Either way:  nada.  What am I doing wrong????
Here's the sp:
CREATE PROCEDURE sp_HOUSRoomAudits @Result VarChar(1) OUTPUT, @Dorm VarChar(12), @Room VarChar(5), @StuID VarChar(14)  AS
DECLARE @Capacity IntDECLARE @Assigned Int--DECLARE @Result VarChar(1)DECLARE @BD BIT
SET @BD=(SELECT Boarding FROM HOUS_StudentMaster WHERE StudentID=@StuID)
SET @Capacity=(SELECT [Student Capacity] FROM HOUS_Rooms WHERE Bldg=@Dorm AND [Room #]=@Room)
SET @Assigned=(SELECT COUNT(PSID) FROM HOUS_StudentMaster a JOIN HOUS_Dorms b ON a.Dormatory=b.Dormitory  WHERE b.Bldg=@Dorm AND a.Status='Active'  AND a.Room=@Room)
IF (@BD=1 AND @Room='N/A') OR (@BD=0 AND @Room<>'N/A')
 SET @Result='3'ELSE IF @Assigned<@Capacity   SET @Result='1' ELSE    SET @Result='2'
print @Result--RETURN @ResultGO
Here's the calling code; I'm leaving out all the dim's etc down to the output parameter:
Dim Parm4 As SqlParameter = scmdReturn.Parameters.Add("@Result", SqlDbType.VarChar)
Parm4.Direction = ParameterDirection.Output
Parm4.Value = "0"
Try
scmdReturn.ExecuteNonQuery()
strOut = Parm4.Value
Catch ex As Exception
Me.lblProblem.Text = "Failed to execute command, err = " & ex.Message
Me.lblProblem.Visible = True
Finally
scnnReturn.Close()
End Try
Hoping you can help, and thanks!
Ka
 

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Nov 3, 2005

I'm having a blast.I've been trying to get a sproc to work with 3 imputs and 1 output parameter, first I thought it was something wrong with my asp.net (v2.0) code but after some high pursuit code searching I finally tried out the sproc in QA, still didn't work. can you see what's wrong with this sproc?CREATE PROCEDURE gogogod.sp_user_add@username varchar(24),@password varchar(64),@email varchar(64),@errCode varchar(128) OUTPUTAS    IF NOT EXISTS(SELECT username, email FROM tblUser WHERE username = @username OR email = @email )    BEGIN        DECLARE @uid uniqueidentifier        SET @uid = newID()        INSERT INTO tblUser (uid, username, password, email) VALUES (@uid, @username, @password, @email)        SELECT @uid AS uID        SET @errCode = 'user created'    END    ELSE        SET @errcode = 'User already exists'    RETURNfor some reason the sproc asks for a 4th input parameter, I tried just adding " , '' " as a fourth and it 'worked' (i think) I couldn't check if there was an output for the @errcode.any ideas?

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Dec 13, 2005

i have the following problem.  I have a sproc that takes 2 input
parameters used for the where clause and outputs another 3 output
parameters to be displayed in my aspx page.  Below is my sproc as
well as my code of how i call the sproc from asp.net2
---------
SPROC
---------
ALTER   Procedure [dbo].[sp_Ret_Users]
@AccountStatus varchar(50),
@LoginName varchar(200),
@Address varchar (50) OUTPUT,
@FName varchar(100) OUTPUT,
@LName varchar (100) OUTPUT
AS
BEGIN
    SET NOCOUNT ON;

Select
    @Address = address,
    @Fname = fname,
    @Lname = Lname
From tb_Users
Where
    LoginName = @LoginName AND AccountStatus = @AccountStatus
END;
------------------------------------------------------------------------------

Here is my vb code that i use to call from my asp.net2 site
-------------------
        Dim connString As String =
ConfigurationManager.ConnectionStrings("UsersConnectionString").ConnectionString
        Using myConnection As New SqlConnection(connString)
            Dim cmd As New SqlCommand
            Dim Command As SqlCommand = New SqlCommand()

            Command.Connection = myConnection
            Command.CommandText = "sp_Ret_Users"
            Command.CommandType = CommandType.StoredProcedure

            'Input Parameters
           
Command.Parameters.Add(New SqlParameter("@AccountStatus",
Data.SqlDbType.VarChar, 50))
           
Command.Parameters("@AccountStatus").Value =
ddlAccountStatus.SelectedValue
           
Command.Parameters.Add(New SqlParameter("@LoginName",
Data.SqlDbType.VarChar, 200))
           
Command.Parameters("@LoginName").Value = ddlLoginName.SelectedValue

            'Output Parameters
            Dim
AddressParam As New SqlParameter("@Address", SqlDbType.VarChar, 50)
            Dim
FNameParam As New SqlParameter("@FName", SqlDbType.VarChar, 100)
            Dim
LNameParam As New SqlParameter("@LName", SqlDbType.VarChar, 100)

            AddressParam.Direction = ParameterDirection.Output
            FNameParam.Direction = ParameterDirection.Output
            LNameParam.Direction = ParameterDirection.Output

            Command.Parameters.Add(AddressParam)
            Command.Parameters.Add(FNameParam)
            Command.Parameters.Add(LNameParam)

            myConnection.Open()
            Dim reader As SqlDataReader = Command.ExecuteReader()

            Dim AddressOut As String = AddressParam.Value
            Dim FNameOut As String = FNameParam.Value
            Dim LNameOut As String = LNameParam.Value

            myConnection.Close()
        End Using

The last 3 variables AddressOut, FnameOut, LNameOUT do not return any values.

I am sure that my problem is somewhere in my vb code as if i run the sproc in QA it runs ok and outputs the variables.

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Jan 18, 2006

Is there any benefit to using Output parameters:eg.[query set-up and execution goes here]

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Jul 21, 2004

I am having problems returning the value of a parameter I have set in my stored procedure. Basically this is an authentication to check username and password for my login page. However, I am receiving the error:

Procedure 'DBAuthenticate' expects parameter '@@ID', which was not supplied.

This stored procedure is supposed to return a -1 if the username is not found, -2 if the password does not match, or the @ID parameter, which is the user ID, if it is successful. How do i go about fixing this SP so that I am returning this output for @ID?


CREATE PROCEDURE DBAuthenticate

(

@UserName nVarChar (20),
@Password nVarChar (20),
@@ID varchar(4) OUTPUT

)

AS
Declare @ActualPassword nVarchar (20)

Select

@@ID = RegionID,

@ActualPassword =regpassword

From dbo.Regions

Where Region = @Username

If @@ID is not null
Begin
if @Password =@actualpassword

Select @@ID
Else

Select -2
End
Else

Select -1
GO

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Jan 8, 2007

Hi guys,
I know this might be the wrong place to post this, but I thought I would try since all of you are very smart here :).
I have a huge problem with an app that I inherited. It is a VB6 app that used RDO.
I am trying to convert it to use ADO, but the problem I am running into is we have allot of stored procedures with OUTPUT parameter's, so instead of the procedure having a SELECT to pass back the value, it is passed back via the OUTPUT parameter.
With RDO this is done easily with just passing back the parameter to a variable.
I am not sure how to do this with ADO. Please shine some light for me.

Here is an example:
RDO code:
Private rqAddRecord As RDO.rdoQuery
Private rs As RDO.rdoResultset
Set rqAddRecord = SQLServerDB.CreateQuery("", MakeSP("sp_UpdCourier", 11))

With rqAddRecord
.rdoParameters(0) = "I"
.rdoParameters(1) = m.nCourierDeliveryID
.rdoParameters(2) = m.dDeliveryDate
.rdoParameters(3) = m.nCourierServiceID
.rdoParameters(4) = m.nCourierID
.rdoParameters(5) = m.sCourierDepartment
.rdoParameters(6) = m.dTimeStart
.rdoParameters(7) = m.dTimeComplete
.rdoParameters(8) = g.sDatabaseUserName
.rdoParameters(9) = m.dInvoiceDate
.rdoParameters(10) = m.sInvoiceNumber

.Execute

m.nCourierDeliveryID = .rdoParameters(1)
End With

Stored Procedure:


CREATE PROCEDURE sp_UpdCourier
(
@ActionCode char(1),-- (I)nsert, (U)pdate, (D)elete
@CourierDeliveryID intOUTPUT,
@DeliveryDate datetime,
@CourierServiceID tinyint,
@CourierID tinyint,
@CourierDepartment char(5),
@TimeStart datetime,
@TimeComplete datetime,
@ChangedUserID char(8),
@InvoiceDate smalldatetime,
@InvoiceNumber char(15)
)
AS

/************************************************** *********************
* Name:sp_UpdCourier
* Author:Markus Waite
* Date: 03/02/04
*-----------------------------------------------------------------------
* Desc:tblCourier Maintenance
*
*-----------------------------------------------------------------------
* $Revision: 4 $
*
************************************************** *********************/

SET NOCOUNT ON

DECLARE@ExistingDeliveryDatedatetime,
@NbrDaysint

IF @ActionCode IN ('I','U')
AND @CourierDepartment = ''
BEGIN
RAISERROR (50075, 16, 1)
RETURN
END

-- Insert
IF @ActionCode = 'I'
BEGIN
-- Validate Existance
IF EXISTS (
SELECT*
FROMtblCourier
WHEREDeliveryDate= @DeliveryDate
ANDCourierServiceID= @CourierServiceID
ANDCourierID= @CourierID
ANDCourierDepartment= @CourierDepartment
ANDTimeStart= @TimeStart
ANDTimeComplete= @TimeComplete )
BEGIN
RAISERROR (50002, 16, 1)
RETURN
END

/*
** Verify if entering another shift that that Times do not overlap
*/
IF EXISTS (
SELECT*
FROMtblCourier
WHEREDeliveryDate= @DeliveryDate
ANDCourierServiceID= @CourierServiceID
ANDCourierID= @CourierID
ANDCourierDepartment= @CourierDepartment
ANDNOT ( (@TimeStart< TimeStart
AND @TimeComplete < TimeStart)
OR(@TimeStart> TimeComplete
AND @TimeComplete > TimeComplete) ) )
BEGIN
RAISERROR (50044, 16, 1)
RETURN
END

BEGIN TRANSACTION

SELECT@CourierDeliveryID = ISNULL(MAX(CourierDeliveryID), 0) + 1
FROMtblCourier (HOLDLOCK)

INSERTtblCourier
(
CourierDeliveryID,
DeliveryDate,
CourierServiceID,
CourierID,
CourierDepartment,
TimeStart,
TimeComplete,
ChangedUserID,
ChangedDate,
InvoiceDate,
InvoiceNumber
)
VALUES
(
@CourierDeliveryID,
@DeliveryDate,
@CourierServiceID,
@CourierID,
@CourierDepartment,
@TimeStart,
@TimeComplete,
@ChangedUserID,
GETDATE(),
@InvoiceDate,
@InvoiceNumber
)

IF @@ERROR <> 0
BEGIN
ROLLBACK TRANSACTION
RAISERROR ('Failed inserting Courier values', 16, 1)
RETURN
END

COMMIT TRANSACTION

--SELECT @CourierDeliveryID

RETURN
END

-- Update
IF @ActionCode = 'U'
BEGIN
/*
** Verify if entering another shift that that Times do not overlap
*/
IF EXISTS (
SELECT*
FROMtblCourier
WHEREDeliveryDate= @DeliveryDate
ANDCourierServiceID= @CourierServiceID
ANDCourierID= @CourierID
ANDCourierDepartment= @CourierDepartment
ANDNOT ( (@TimeStart< TimeStart
AND @TimeComplete < TimeStart)
OR(@TimeStart> TimeComplete
AND @TimeComplete > TimeComplete) )
ANDCourierDeliveryID!= @CourierDeliveryID )
BEGIN
RAISERROR (50044, 16, 1)
RETURN
END

IF EXISTS (
SELECT*
FROMtblCourierDetail d
WHERECourierDeliveryID= @CourierDeliveryID
ANDCONVERT(CHAR,DeliveryTime,14) NOT BETWEEN CONVERT(CHAR,@TimeStart,14) AND CONVERT(CHAR,@TimeComplete,14) )
BEGIN
RAISERROR (50059, 16, 1)
RETURN
END

SELECT@ExistingDeliveryDate = DeliveryDate
FROMtblCourier
WHERECourierDeliveryID= @CourierDeliveryID

IF @@ROWCOUNT <> 1
BEGIN
RAISERROR ('Could not locate current delivery record', 16, 1)
RETURN
END

BEGIN TRANSACTION

UPDATEtblCourier
SETDeliveryDate= @DeliveryDate,
CourierServiceID= @CourierServiceID,
CourierID= @CourierID,
CourierDepartment= @CourierDepartment,
TimeStart= @TimeStart,
TimeComplete= @TimeComplete,
ChangedUserID= @ChangedUserID,
ChangedDate = GETDATE(),
InvoiceDate= @InvoiceDate,
InvoiceNumber = @InvoiceNumber
WHERECourierDeliveryID= @CourierDeliveryID

IF @@ERROR <> 0
BEGIN
ROLLBACK TRANSACTION
RAISERROR ('Failed updating Courier values', 16, 1)
RETURN
END

-- If date changed, then update the Delivery Times
IF CONVERT(CHAR, @DeliveryDate, 101) <> CONVERT(CHAR, @ExistingDeliveryDate, 101)
BEGIN
SELECT@NbrDays = DATEDIFF(dd, @ExistingDeliveryDate, @DeliveryDate)

UPDATEtblCourierDetail
SETDeliveryTime= DATEADD(dd, @NbrDays, DeliveryTime)
WHERECourierDeliveryID= @CourierDeliveryID

IF @@ERROR <> 0
BEGIN
ROLLBACK TRANSACTION
RAISERROR ('Failed updating Courier Detail values', 16, 1)
RETURN
END
END

COMMIT TRANSACTION

--SELECT @CourierDeliveryID

RETURN
END

-- Delete
IF @ActionCode = 'D'
BEGIN
BEGIN TRANSACTION

DELETEtblCourierDetail
WHERECourierDeliveryID= @CourierDeliveryID

IF @@ERROR <> 0
BEGIN
ROLLBACK TRANSACTION
RAISERROR ('Failed deleting Courier Detail values', 16, 1)
RETURN
END

DELETEtblCourier
WHERECourierDeliveryID= @CourierDeliveryID

IF @@ERROR <> 0
BEGIN
ROLLBACK TRANSACTION
RAISERROR ('Failed deleting Courier values', 16, 1)
RETURN
END

COMMIT TRANSACTION

--SELECT @CourierDeliveryID

RETURN
END

-- else

RAISERROR ('Invalid Action Code passed to sp_UpdCourier', 16, 1)
RETURN
GO

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Oct 4, 2007

Hi,
I have a sp like this:

Create PROCEDURE sp_child2 @inp int, @out int output
AS
SELECT @out = @inp * 10
GO

In the report screen i want the following:

A text box which will take the @inp(this will come automatically)
When i click the "view report" the output value should be displayed in the textbox i have in the report.

But the problem i am facing is with the above sp is its creating two text boxes automatically asking for @inp and @out.If i dont give anything in @out text box and press the view report an error is thrown asing me to fill the output box.

Isnt it supposed to be a output value?Am i doing something wrong?

please help...

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