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by: PeteZ |
last post by:
I'm having a problem where I exec a stored procedure (which SELECTs all rows
from a table, which has 100 rows) - each row has 8 columns.
When I exec the code (see below) I get 8 in oSQLDR.FieldCount (which I
expect but whenever I try and reference the data in the row
(oSQLDR.GetInt32(0);) I get an exception "invalid attempt to read when no
data is present". If I exec the SP in an ISQL window using: EXEC getEvents,
I get 100 rows...
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by: lakshmi |
last post by:
Hi all,
My requirement is I need to have three different
recordsets open at the same time. Traversing through the 3
recordsets, I would check on the data and based on some
rules, return an object from my function.
Will it be efficient to use a SQLDataReader or a DataSet
for this situation? I understand from the documentation
that there can be only one SQLDataReader associated with a
connection open at a time. So, it seems like I can't...
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by: Franck Diastein |
last post by:
Hi, when I call ExportData I have this error:
Invalid attempt to Read when reader is closed.
Telling me that there's a problem with this line:
while(_dataR.Read()){
Code:
*************************************************
public void Export2CSV(){
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by: Neil Guyette |
last post by:
Hello, Everyone,
I'm trying to find information on how to populate a combo
box using a SqlDataReader. I want to be able to set the
value of the combo's value property different then the
combo's text property (what the user will see). Is this
possible with a SqlDataReader?
Thanks
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by: bidllc |
last post by:
I have a funtion that works fine and dandy when called from anywhere in my
app. It will NOT work when called from inside the class in which it resides.
This is the function I'm calling: "getProductByID(productID)" from inside
another method in the same class. See below.
This line throws a null ref exception:
While dr.Read()
Thanks for any insight!
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by: Jeff |
last post by:
Hi -
I'm having trouble Databinding a SQLDataReader to a DataGrid control.
I have an ASP.NET web page accessing a SQL database. I've used VS to build
the app and stored it in a directory of my localhost on my development
machine. The database is on the web.
When I run the app on the local machine, IE opens, loads my aspx page from
localhost, and hangs. (Eventually I get a page cannot be displayed error.)
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by: Cameron Frasnelly |
last post by:
I emulated the code from the .Net Framework help (Titled "Using Stored
Procedures with a Command") and I still receive and error...
Error Received = "Invalid attempt to read when no data is present."
BUT when I manually run the Stored Procedure and manually type in '3333' it
works just fine by returning the single row for that particular work
order????????
*****More Clues****
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by: cp |
last post by:
I have a business object (c#) running on an app server that talks to my sql server 2000 (2 separate physical machines). If sql server gets restarted (i.e. someone kicks the cord out of the wall on the db server and it needs to be restarted), the connections that IIS is maintaining seem to be invalid. If someone can verify that or explain a little about how the internals of that works, that would be educational for me but I'll take it on faith...
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by: Martin B |
last post by:
Hallo!
I'm working with C# .NET 2.0, implementing Client/Server Applications which
are connecting via Network to SQL-Server or Oracle Databases.
To stay independent from the underlaying Database I use
System.Data.Common.DBConnection and .DBCommand.
How can I keep aware from connection losses (network not availeable,
db-server not available...)?
Are there any strategies to detect this broken connections, and how can I
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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: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
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by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
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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: 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: 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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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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