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by: Yasutaka Ito |
last post by:
Hi,
My friend had a little confusion about the working of DataReader after
reading an article from MSDN. Following is a message from him...
<!-- Message starts -->
I was going thru DataReader in ADO.NET in MSDN and there is a confusion
regarding the buffering
of data in case of DATAREADER. The link for MSDN JAN 2004 is -
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by: Martin Raychev |
last post by:
Hi all,
I have the following problem:
I have a private method that returns a SqlDataReader. For this to work I
have not to close the DB connection in the above method. I do this only to
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by: Joel Reinford |
last post by:
I am attempting to verify whether a datareader is closed by calling the
databind on a control.
for example (fake code)
Dim rdr as SqlDataReader
rdr = mycommand.executeReader...
MyDataGrid.DataSource = rdr
MyDataGrid.DataBind()
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by: Mark |
last post by:
Hi all, quick question , a DataView is
memory resident "view" of data in a data table therefore once populated you
can close the connection to the database. Garbage collection can then be
used to "clean up" the DataView once it is not referenced and will not
effect the number of connections to the database.
A DataReader on the other hand always maintains a connection to the database
and must be explicitly closed (Do not rely on garbage...
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by: Alan Silver |
last post by:
Hello,
I have a generic method in a utility class that grabs an sqldatareader
and returns it. Due to the fact that (AFAIK), you can't close the
database connection before you've read the data, this method doesn't
close it, it just returns the datareader. The calling code uses the
datareader and then just lets it drop out of scope, to be picked up by
the garbage collector.
Is this a problem? A friend of mine suggested to me that not...
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by: RSH |
last post by:
Hi,
I have a situation where I have two datareaders, and I want to make sure any
given field from Datareader A exists in Datareader B before I can do
anything with that column.
I tried the code below but I get an exception thrown because the column
doesn't exist in Datareader B.
I'm not opposed to using another method but the same thing happened when
using a Dataset. How do I do this??
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by: Varangian |
last post by:
Hi all,
the question I want to ask if the conversion of a DataReader to a Table
looping through the DataReader is better than using the Fill Method of
the DataAdapter... I'm asking because internally the DataAdapter uses
the DataReader... so whats the deal of writing a method that converts a
DataReader into a DataTable ?
Thanks!
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by: Diffident |
last post by:
Hello All,
I would like to use DataReader based accessing in my Data Access Layer
(DAL). What is considered to be a best practice while returning from a DAL
method that executes a query and returns N rows. DataReader object?
Collection object? DataTable object? Returning a DataReader object is not a
good practice...right?
Thnks for all your suggestions!!
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by: =?Utf-8?B?ZGJhMTIz?= |
last post by:
Note, I'm using C#
I am wondering what type of control I should use for iterating through the
set of records returned by callin this method below, so that I can then do
some stuff with each record like string manipulation, or taking the data for
insertion into another table, etc..
Here's the function that returns the data as an ArrayList.
Note: You'll see plain S and B since for this post, I wanted to keep our
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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: 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: 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: 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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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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