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by: jason |
last post by:
Hi,
{asp .net 1.1, sp 2)
I am facing problems with multi users accessing the same page. There is a
datagrid in the webform. The "datareader already opened error/ object
reference not found" errors will occur randomly when multi users are
clicking page number (paging), any page number.
The connection object is declared private and connection is closed
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by: rn5a |
last post by:
The following code resides in a VB class file name GetOrder.vb (this
class file exists in the App_Code directory):
Namespace Shop
Public Class Orders
Public Function ViewOrder(ByVal UserID As Integer, ByVal
OrderID As Integer) As SqlDataAdapter
Dim sqlDapter As SqlDataAdapter
Dim sqlConn As SqlConnection
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by: fniles |
last post by:
I am using VB.NET 2003, SQL 2000, and SqlDataReader.
As I read data from tblA, I want to populate tblB. I use SQLDataReader for
both tables. I do not use thread.
When I ExecuteReader on tblB, I get the error "There is already an open
DataReader associated with this Connection which must be closed first."
How can I fix this error ?
For each DataReader, do I want to open and close the connection (in this
case adoCon) to avoid this error ?...
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by: jimmy |
last post by:
Hi again,
sorry for posting two questions so close together but im working on a
school project which is due in soon and running into some difficulties
implementing the database parts. I have the code below which when
executed generates the following error message: 'There is already an
open datareader with this command which must be closed first'
Private Sub MainMenu_Load(ByVal sender As System.Object, ByVal e As
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by: Bart |
last post by:
Hi,
i get the error:
"There is already an open DataReader associated with this Command which must
be closed first"
Thanks
Bart
-----------------------------------------
Imports System.Data.sqlclient
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by: BLUE |
last post by:
I've a TransactionScope in which I select some data and I want to do some
queries for each record retrieved with my select.
I'm using a DataReader and for each record I do factory.CreateCommand() and
then I execute the command, but I get the following exception message:
" There is already an open DataReader associated with this Command which
must be closed first. "
Searching on google I've found I've to create another connection, but...
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by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
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by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
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by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
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by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
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by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
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by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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