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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: Woody Splawn |
last post by:
I have some code that looks like this:
Dim SSN, LName, FName, M As String
mySqlConnection = New SqlConnection(myConnectionString)
Dim sql_Command As New SqlCommand( _
"Select SSN, LName, FName, M from Students WHERE (SSN = " + " '" +
ProposedValue + "')", _
mySqlConnection)
Try
mySqlConnection.Open()
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by: Mahesh Kumar.R |
last post by:
What is the difference between SqlDataReader and IDataReader ...? kindly with small example...
Mahesh~
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by: ×™×•× ×™ גולדברג |
last post by:
Hi,
In few places within my code
the business object pass IDataReader to the GUI.
Suddenly i noticed that nowhere in the code the IDataReader
is being closed.
Does the data binding operation closes the IDataReader?
If i didn't close it explicitly, the IDataReader remains open untill GC will
clean it?
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by: teresa |
last post by:
Hi Everyone,
I appreciate any help if any of you know or have used this method
before and can give me some suggestion. It's a bit difficult to
explain:
Here is my table:
Table1: there are 4 columns in this table as follow:
Column1 | Column2 | Column3 | Column4 |
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by: jarod1701 |
last post by:
Hi everyone,
is there a way to access every record from a SqlDataReader via
"foreach" ?
I want to write a class which (besides doing some other stuff)
retrieves a recordset using SqlCommand.ExecuteReader().
Something like:
MyDbClass db = new MyDbClass("SELECT * FROM tblUsers");
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by: lithoman |
last post by:
I'm stumped here. I run the procedure Batch_Select against the database
with @ID=18 and I get the expected data.
When it loads into a SqlDataReader, it gets messed up somehow.
Initially, after the reader.Read(), it has a row with 13 data columns,
but they're all empty. So, my GetInt() function throws an error. When
it jumps to the catch(), reader's columns then show the proper data.
What gives?
I have reader._data (which is the ID...
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by: Frank Milverckowitz |
last post by:
Hi,
Newbie question about SqlDataReader column value access...
In java jdbc code to get a value from a table column we can pass the column
name (instead of an int index or offset):
String strLastName = rs.getString( "LastName" );
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by: CSharper |
last post by:
I have a common program where I have a method which make a sql
connection and then prepares a SqlDataReader that is passed to the
calling method. But in the common method, I have the connection close
method as well. So when the query runs the data reader has data but
after the close is called the data reader becomes null. Is there a way
I can preserver the data reader after closing the connection??
Thanks.
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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: 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: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
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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: 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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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
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