Its a ASP.net application in VS2008, connecting to SQL 2005 database.
No errors calling the Stored procedure, db update is successful but the OUTPUT param returns DBnull all the time. Below the vb code:
Dim ConnectString As String = "", connect As New Data.SqlClient.SqlConnection
ConnectString = ConfigurationManager.ConnectionStrings("ConnectionString").ConnectionString
connect.ConnectionString = ConnectString
Dim cmd As New SqlCommand("saveAccess", connect)
cmd.CommandType = CommandType.StoredProcedure
cmd.Parameters.Add(New SqlParameter("#Name", "SampleName"))
Dim outparam As SqlParameter = New SqlParameter("#returnValue", SqlDbType.Int)
outparam.Direction = ParameterDirection.Output
cmd.Parameters.Add(outparam)
connect.Open()
cmd.ExecuteNonQuery()
If IsDBNull(cmd.Parameters("#returnValue").Value Then
Response.Write("Why does it always returns DBNull")
Else : Response.Write(cmd.Parameters("#returnValue").Value.ToString())
End If
connect.Close()
Here is the SQL code
ALTER PROCEDURE [dbo].[saveAccess]
(#Name NVARCHAR(20), #returnValue INT OUTPUT )
AS
BEGIN
INSERT INTO Access ([Name]) VALUES (#Name);
SELECT #returnValue = ##ROWCOUNT;
END
Not sure what is the silly mistake that I am doing. Any input helps.
Thanks
Instead of SELECT, try using SET to set the value of the output parameter
SET #returnValue = ##ROWCOUNT;
Solution (as said silly myself): missed the # symbol in front of the returnValue variable. I typed up the code in this posting correctly but I had it without the # in the SP.
wrong: SELECT returnValue = ##ROWCOUNT;
correct: SELECT #returnValue = ##ROWCOUNT;
Thanks
Related
I'm having an issue, I'm calling a procedure on oracle 11g, the prucedure receives a clob and responds with a different CLOB, a VARCHAR2 and a Number. The procedure is called from a ASP.NET (on Visual Basic) webpage using oracle data provider (ODP.NET), I can call the procedure successfully, view the VARCHAR2 and NUMBER returned values, but when I try to see the returned value of the returning CLOB all I get is "Oracle.DataAccess.Types.OracleClob" instead of a expecting XML
I know the returned XML is generated because on the store procedure I create a txt file where it shows the expected result
My code it's pretty simple right now:
Function Index() As String 'ActionResult
Dim xml_message As String
Dim oradb As String = "Data Source=127.0.0.1;User Id=id;Password=pass;"
Dim conn As New OracleConnection(oradb)
Dim oracleDataAdapter As New OracleDataAdapter
oracleDataAdapter = New OracleDataAdapter()
Dim cmd As New OracleCommand
cmd.Connection = conn
cmd.CommandType = CommandType.StoredProcedure
cmd.CommandText = "Common.GetDriverPoints"
cmd.BindByName = True
Dim driver_input As New OracleParameter()
driver_input = cmd.Parameters.Add("p_driver", OracleDbType.Clob)
driver_input.Direction = ParameterDirection.Input
driver_input.Value = <THE_SENDED_XML_VALUE>
Dim driver_output As New OracleParameter()
driver_output = cmd.Parameters.Add("p_output", OracleDbType.Clob)
driver_output.Direction = ParameterDirection.Output
Dim error_flag As New OracleParameter()
error_flag = cmd.Parameters.Add("p_Return", OracleDbType.Int16)
error_flag.Direction = ParameterDirection.Output
Dim error_desc As New OracleParameter()
error_desc = cmd.Parameters.Add("p_ReturnDesc", OracleDbType.Varchar2, 100)
error_desc.Direction = ParameterDirection.Output
conn.Open()
cmd.ExecuteNonQuery()
Dim output As String
output = driver_output.Value.ToString() 'This only returns Oracle.DataAccess.Types.OracleClob
conn.Close()
conn.Dispose()
Return output
End Function
Also, the generated xml is around 55Kb, sometimes it's bigger
Thank you
I manage to find the answer, In case someone have the same problem, basically what has to be done is create another clob, used only on for vb.net, that clob will receive the value of the parameter output from the procedure, then cast to a string variable the local clob.
Example:
Dim output As String
Dim myOracleClob As OracleClob = driver_output.Value
output = System.Convert.ToString(myOracleClob.Value)
Now the "output" variable holds the actual message of the clob.
Hope this helps anybody with the same problem.
For the last 2 hours I was trying figure out why the parameter could not be bound (Well I know I was not using the "using" block. And I know System.Data.OracleClient is deprecated.) Please help me see what's wrong with the following code:
Dim nCount As Integer
sSQL = " SELECT COUNT(*) FROM USERS WHERE USER_ID = :UID "
Dim conn As OracleConnection = New OracleConnection(ConfigurationSettings.AppSettings("connString"))
conn.Open()
Dim cmd As OracleCommand = New OracleCommand(sSQL, conn)
cmd.CommandType = CommandType.Text
With cmd
.Parameters.Add(New OracleParameter(":UID", txtUserID.Text))
End With
Try
nCount = cmd.ExecuteScalar()
Catch ex As Exception
End Try
I have tried all variations I can find online: with or without colon in the Parameters.Add, Add or AddWithValue, Add in a parenthesis or create a new OracleParameter object then add it...Nothing seems to work.
But if I just hard-code the USER_ID in the query, remove the parameter.Add, it would return a value.
A HA!
UID is actually a reserved word in Oracle. Change your UID variable to something that is not a reserved word.
For me it seems that you missed something, while experimenting with different combinations.
This variant must work:
Dim nCount As Integer
sSQL = "SELECT COUNT(*) FROM USERS WHERE USER_ID = :UID"
Dim conn As OracleConnection = New OracleConnection(ConfigurationSettings.AppSettings("connString"))
conn.Open()
Dim cmd As OracleCommand = New OracleCommand(sSQL, conn)
cmd.CommandType = CommandType.Text
cmd.Parameters.Add("UID", OracleType.VarChar).Value = txtUserID.Text
nCount = cmd.ExecuteScalar()
Please try it ...
Do yourself a favor and at least look into ODP from Oracle. You'll need it with Microsoft finally pulls the plus on its OracleClient. The switch over to ODP is very easy.
In your situation, I'd leave off the parameter name. You're binding by position anyway.
The SQL syntax is also a little different in the Microsoft implementation. Use a ? to act as each placeholder. See http://msdn.microsoft.com/en-us/library/system.data.oracleclient.oracleparameter.aspx for further information.
I have the below code which is populating a dropdownlist in ASP.NET. When I use a single value, everything works like a charm, but I want the DataTextField to use two fields coming from the database, not one. Any assistance would be greatly appreciated. I have tried several ways, but nothing seems to work :(
Dim connstr As String = Session("ConnStrEP")
Using con As New SqlConnection(connstr)
Using cmd As New SqlCommand()
cmd.CommandType = CommandType.StoredProcedure
cmd.CommandText = "GetWaivers"
cmd.Connection = con
con.Open()
Dim dr As SqlDataReader = cmd.ExecuteReader()
dr.Read()
Code.DataSource = dr
Code.DataTextField = String.Format("{0}, {1}", Code.SelectedValue("tblWVCode").ToString(), Code.SelectedValue("tblWVDesc").ToString())
Code.DataValueField = "tblWVDesc"
Code.DataBind()
dr.Close()
con.Close()
End Using
End Using
UPDATE:
I generated the below SQL, but I am receiving an error when I execute the SQL Server 2008 Stored Procedure. "Invalid operator for data type. Operator equals add, type equals ntext.
"
SELECT TblWvCode, TblWvDesc, (TblWvCode + ' - ' + TblWvDesc) As FullList FROM EP.dbo.WaiverVarianceTbl
Modify the stored proc to concatenate the tblWVCode and tblWVDesc values and return them in a new field, you can then use that field for the DataTextField
You can't do that, you'll need to change your SQL query to return the field on the format you need. DataTextField must be a field or property name.
Your query should looks like this
SELECT
TblWvCode,
TblWvDesc,
(
CAST(TblWvCode as nvarchar(max)) + ', ' + CAST(tblWVDesc as nvarchar(max))
) as FullList
FROM EP.dbo.WaiverVarianceTbl
and then your VB code would be something like this
Code.DataTextField = "FullList"
Code.DataValueField = "tblWVDesc"
I have a question which has been frustrating me and I have googled and googled and can't find what I want.
I have this SQL Server stored procedure, which works great and returns the unique identifier:
ALTER PROCEDURE [dbo].[mcd_AddLogin]
#UserName nvarchar(256),
#Password nvarchar(256),
#UID uniqueidentifier OUTPUT
AS
BEGIN
IF( #UID IS NULL )
SELECT #UID = NEWID()
ELSE
BEGIN
IF( EXISTS( SELECT [USERNAME] FROM dbo.LoginPassing_Active) )
RETURN -1
END
Declare #Active bit
Declare #Exp_Date datetime
Set #Active = 1
Set #Exp_Date = DATEADD(mi, 1, GETDATE())
INSERT dbo.LoginPassing ([USERNAME], [PASSWORD], [ACTIVE], [EXP_DATE], [UID])
VALUES (#UserName, #Password, #Active, #Exp_Date, #Uid)
RETURN 0
END
I am trying to use this in and ASP.NET application, and am getting the following error:
Procedure or function 'mcd_AddLogin' expects parameter '#UID', which was not supplied.
Below is the code in my ASP.Net application, can anyone help me solve what is going wrong, I'm sure its really simple and I have just missed a trick:
Dim conSQL As New SqlConnection
conSQL.ConnectionString = My.Settings.conSQL
conSQL.Open()
Dim comSQL As New SqlCommand
comSQL.Connection = conSQL
comSQL.CommandText = "mcd_AddLogin"
comSQL.CommandType = CommandType.StoredProcedure
comSQL.Parameters.Add("#Username", SqlDbType.NVarChar).Value = "username"
comSQL.Parameters.Add("#Password", SqlDbType.NVarChar).Value = "password"
comSQL.ExecuteNonQuery()
litAD.Text = comSQL.Parameters("#UID").Value
Appreciate your help in advance.
Thanks,
Steve
In stored procedure you have output parameter, then you must provide that parameter and after SP execution you can get output value from parameter.
Try this:
comSQL.Parameters.Add("#Password", SqlDbType.NVarChar).Value = "password"
comSQL.Parameters.Add("#UID", SqlDbType.Int)
comSQL.Parameters("#UID").Direction = ParameterDirection.Output
comSQL.ExecuteNonQuery()
litAD.Text = comSQL.Parameters("#UID").Value
You need to spacefiy the Parameter Direction and pass it before calling ExecuteNonQuery()
eg
myParm.Direction = ParameterDirection.Output
Please read more about Input and Output Parameters
Turns out I was googling the wrong thing - I wanted OUTPUT parameters, I solved the problem with my code below:
comSQL.Connection = conSQL
comSQL.CommandText = "mcd_AddLogin"
comSQL.CommandType = CommandType.StoredProcedure
comSQL.Parameters.Add("#Username", SqlDbType.NVarChar).Value = "spearce"
comSQL.Parameters.Add("#Password", SqlDbType.NVarChar).Value = "kintikai"
comSQL.Parameters.Add("#UID", SqlDbType.UniqueIdentifier)
comSQL.Parameters("#UID").Direction = ParameterDirection.Output
comSQL.ExecuteNonQuery()
litAD.Text = comSQL.Parameters("#UID").Value
Thanks for your help anyways.
I've been searching the depths of the internet and all the solutions I found did not solve this problem.
I am using Visual Web Developer 2010 Express with SQL Server 2008, using VB.
I am trying to execute a stored procedure to insert some data coming from a textbox control to a database, if the id doesn't exist it inserts both the id given in the textbox and the current date (time_scanned_in), if the id exists already, it will insert the current datetime in the [time_scanned_out] column, if all 3 fields in the db are full, it will return #message = 1.
Here is the sql stored procedure:
ALTER PROCEDURE dbo.InsertDateTime
#barcode_id nchar(20),
#message char(1) = 0 Output
AS
BEGIN
if not exists(select * from tblWork where barcode_id = #barcode_id)
begin
INSERT INTO [tblWork] ([barcode_id], [time_scanned]) VALUES (#barcode_id, GetDate())
end
else if exists(select * from tblWork where barcode_id = #barcode_id AND time_scanned_out IS NOT NULL )
begin
SET #message=1
end
else if exists(select * from tblWork where barcode_id = #barcode_id AND time_scanned_out IS NULL)
begin
UPDATE [tblWork] SET [time_scanned_out] = GetDate() WHERE [barcode_id] = #barcode_id
end
RETURN #message
end
If I execute this (by right clicking on the SP), it works flawlessly and returns the values when all fields have been filled.
But when executed through the vb code, no such procedure can be found, giving the error in the title.
Here is the vb code:
Dim opconn As String = "Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\Database.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True"
Dim sqlConnection1 As New SqlConnection(opconn)
Dim cmd As New SqlCommand
Dim returnValue As Object
cmd.CommandText = "InsertDateTime"
cmd.CommandType = CommandType.StoredProcedure
cmd.Connection = sqlConnection1
sqlConnection1.Open()
With cmd.Parameters.Add(New SqlParameter("#barcode_id", TextBox.Text))
End With
With cmd.Parameters.Add(New SqlParameter("#message", SqlDbType.Char, 1, Label3.Text))
End With
returnValue = cmd.ExecuteScalar()
sqlConnection1.Close()
Note, I haven't done the code for the return part yet, will do that once I get it to locate the SP.
Tried listing all objects with the sys.objects.name for each of the databases in a gridview, it listed everything but the stored procedure I want.
Why is this, any ideas? Would be much appreciated, spent hours trying to find a solution.
If anyone needs any more code or information feel free to ask.
try cmd.parameters.clear() first and then start adding parameters in cmd object. also instead of cmd.executescaler(), try cmd.executenonquery or cmd.executeReader()
Try this
cmd.Parameters.AddWithValue("#barcode_id", TextBox.Text)
SqlParameter prmOut = cmd.Parameters.Add("#message",SqlDbType.Char, 1)
prmOut.Value = Label3.Text
prmOut.Direction = ParameterDirection.InputOutput
cmd.ExecuteNonQuery()
returnValue = prmOut.Value.ToString()
Recreated the whole project with a whole new database, copied all the same code, and now it all works flawlessly! Still have no idea what was wrong, but thank you all, you were all prompt and knowledgable.
Here was the final VB code for anyone who's interested:
Dim myConnection As New SqlConnection(opconn)
Dim cmd As New SqlCommand()
Dim myReader As SqlDataReader
cmd.CommandType = CommandType.StoredProcedure
cmd.Connection = myConnection
cmd.CommandText = "InsertTimes"
cmd.Parameters.AddWithValue("#message", OleDbType.Integer)
cmd.Parameters.AddWithValue("#barcode_id", TextBox.Text)
cmd.Parameters("#message").Direction = ParameterDirection.Output
Try
myConnection.Open()
myReader = cmd.ExecuteReader()
Dim returnMessage As String = cmd.Parameters("#message").Value
If returnMessage = 1 Then
label_confirmation.Text = "Record successfully submitted!"
TextBox.Text = ""
ElseIf returnMessage = 2 Then
label_confirmation.Text = "A finish time already exists for the record '" & TextBox.Text & "', would you like to override the finish time anyway?"
button_yes.Visible = True
button_no.Visible = True
ElseIf returnMessage = 3 Then
label_confirmation.Text = "Record submitted, work operation status complete!"
TextBox.Text = ""
End If
Catch ex As Exception
label_confirmation.Text = ex.ToString()
Finally
myConnection.Close()
End Try