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by: randy |
last post by:
Hello all,
I have a DataTable which I am building column by column and adding rows
after each new column. The DataTable columns match the columns in my
database table. I'm building the DataTable first and I then want to roll
through the DataTable while in memory checking for errors and then commit
the rows to my database table (btw this is in ASP.NET). Is it possible to
have data in a datable before attaching at DataAdapter? I'm a...
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by: Stefan Turalski \(stic\) |
last post by:
Hi,
I'm wondering if there is a way to send a method parametrs by ref when
DataTabel is a type of this value ?
I done some sort of select over DataTable columns, just by removing them
froma table is each of them isn't on a stirng, but right no I have to do
it in a wat of:
1. passing DataTable to method (lets call it SelectOverDataTabel)
2. declare a local (in SelectOver...) DataTable, inicialize it with my value
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by: nandan |
last post by:
Hi,
Has any one ever compared the performance of calling a DataTable's
Select method with a stored procedure doing the same thing?
My point is:
dataRows = DataTable.Select(filter) is better or
Passing paramters to stored procedure?
The datatable holds about 500-700 rows at any given time.
If I select one of the approaches the business logic will go into
respective layers.With dotnet in picture what would be a good approach
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by: Kris Rudin |
last post by:
I am displaying a table of information on a web page, using an asp:table
that I populate dynamically. On this page I give the user the options to
group the rows by certain fields, and/or filter the contents on certain
fields. The grouping/filtering is "remembered" for each user via a cookie.
The problem is works like this:
User A applies a filter on Project Manager.
User B filters by Department.
User B groups by Project Manager (NOTE -...
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by: Chris Ericoli |
last post by:
Hi,
I am working with an 'in session' ado dataset with an asp.net application.
My dataset is comprised of two tables, one of which maintains a few
calculated datacolumns. For some reason these datacolumns do not trigger
their expression when other columns from which the expressions are derived
are updated. Below is a basic example of what I am doing.
User enters values into an asp.net form and clicks a button.
Retrieve dataset from...
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by: JohnR |
last post by:
Sorry if this is has an obvious answer, but I can't find it...
I am using a datatable.select to obtain the rows in a datatable that meet
certain criteria. My question is this: for each of the datarows that are
returned to me as a result of the datatable.select how can I determine their
index in the datatable.rows collection?
For those interested in why, it is because the index in the datatable is the
same as the index of the same row...
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by: wk6pack |
last post by:
Hi,
How do I check datatable.select(filter) in the following:
for each dtrow in datatable.select(filter)
....
next
I've also tried:
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by: Pete Wittig |
last post by:
Hi,
I have a DataTable and I want to get a subset of the rows within it. I use
the Select method to get my subset and the results are in a DataRow. I
want to put those Rows back into a DataTable. I've tried a few variations of
the following but no rows are every imported into the datatable:
DataRow datrow = ds.Tables.Select("PersonID = " + id);
DataTable dt = new DataTable();
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by: Maxwell2006 |
last post by:
Hi,
I am working with strongly typed datatables.
What is the most efficient way to build a new DataTAble based on the result
of DataTable.Select?
At this point I use a foreach loop to do the work manually. I am looking for
an automated way.
Thank you,
Max
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by: fniles |
last post by:
I am using VB.NET 2005 and Access database.
My program uses a timer that kicks in every 1 min to read from a database
and copy the dataset table to a datatable.
This database is in a class called clsStat.vb.
Then I pass this class to a thread.
Each thread will call a function inside the clsStat.vb to do a "Select" of
the datatable.
Every day around the same time this function that does the select of the
databale gets errors like so:...
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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: 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: 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: 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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