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by: Mike |
last post by:
Related to another topic I just posted, I wanted to discuss ways to optimize
the validation of very large (>100MB) XML documents.
First, I have no idea if something like this already exists; it may even be
the typical implementation for all I know.
At any rate, it occurs to me that the set of business rules that need to be
validated against an XML document represent a limited set of nodes at any
given time (while parsing through the...
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by: Joey P |
last post by:
Hi all,
I am doing a project for university whereby i have to implement a
simple database related to a frozen foods company. I am having some
trouble though creating a validation rule for one of my fields. I
have a table called "Product" and two of the fields included in this
table are "Cost Price" and "Retail Price". I need to create a
validation rule so that the Cost Price is always less than the Retail
Price. I have tried...
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by: Chuck |
last post by:
A97. A database has a table: tblA which has a single text field, B. It is a
primary field, indexed and no duplicates. It is used as a lookup for table
tblC. A form based on tblA is used to add new records. The Validation Rule:
<>!! was made using the expression builder. The rule produces
this error:
The expression you entered in the Form control's Validation Rule
doesn't contain the Automation object 'Tables'
If I use simply: ...
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by: D Witherspoon |
last post by:
I am developing a Windows Forms application in VB.NET that will use .NET
remoting to access the data tier classes.
A very simple way I have come up with is by creating typed (.xsd) datasets.
For example dsParts.xsd and including that in the data tier. I then will
create a class that looks like this
Public Class CPart
Inherits dsParts
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by: MS newsgroup |
last post by:
I don't have clear reasons why we need business logic layer and data logic
layer instead of having only data logic layer.
Are there any good reasons for that?
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by: Ranginald |
last post by:
Hi,
I am confused about the business layer vs. the dal layer and I could
use some help.....
I. If the DAL layer has all the methods to work with the db with a
typed data sey (e.g. ShowProducts(), InsertProducts() ), then why does
the business layer need to wrap these methods with set/get?
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by: gweasel |
last post by:
What is the best way to apply a Validation Rule - or rather, where is
the best place to put it? Is there an advantage to putting it on the
field in the table vs setting the validation rule on the form the
control is on?
Basically I have a number of controls in a form that are required, and
to check it I am setting the Validation Rule to "<>"IsNull" so that
when the user tries to tab through/click out of a required area
without entering...
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by: jehugaleahsa |
last post by:
Hello:
I am trying to find what is the very best approach to business objects
in Windows Forms. Windows Forms presents an awesome opportunity to use
DataTables and I would like to continue doing so.
I have worked with dynamically generated DataTables with customized
DataRows. However, these classes are usually pretty limited. For
instance, you are limited to a select few data types and you can't
deal with nulls as well as desired (in...
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by: jehugaleahsa |
last post by:
Hello:
Is it me, or is handling the Validating event for every control on a
form extremely annoying? It is especially annoying when my business
logic repeats most of the validation. Some things you can handle in
the business logic. But other things, like ensuring a textbox
represents a number or null, requires a developer's intervention.
I am asking whether or not there is an easier way of doing validation
for data bound controls.
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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: 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: 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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