Using OPC to Store Your Own Data
et’s say you’ve been tasked with writing an application that stores some related information, such as an album of pictures. You also need to store some metadata about each picture.
et’s say you’ve been tasked with writing an application that stores some related information, such as an album of pictures. You also need to store some metadata about each picture.
eb 1.0 came about with the invention of HTML, which described web pages. That was fine, but very quickly people wanted the ability to describe more than just web pages.
o, the title isn’t a misprint?this installment of the Baker’s Dozen will visit both sides of the planet. These days, many .NET user group meetings focus on database and business
ahoo User Interface (YUI) is an open source JavaScript library for developing AJAX-based rich user interfaces. The new Yahoo Mail uses YUI, so you might imagine how powerful the library
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For a simple custom logger, you can inherit from the base java.util.logging.Formatter class and override its format method to customize the output. Here’s an example: import java.io.*;import java.util.*;import java.util.logging.*;public class
You can use the sp_MSforeachtable undocumented stored procedure to rebuild all indexes in your database. The command iterates through all the tables in a database. It’s best to schedule this
You can use the CommandName and CommandArgument attributes of a button to submit arguments to an ASP.NET method on the server. For example, suppose you have a repeater control in
Publishers take heed: If you don’t have the content, the readers won’t come. As a publisher of developer-related content, I spend a significant amount of time researching technical topics,
ow that you’ve seen a more detailed comparison of CAM to XML Schema in Part 2, this section builds upon that foundation to explore several of those strengths in more
n the first article in this series, you saw the rudiments of template-building and validation with CAM. This part of the series presents a much more detailed comparison between XML
hile the value proposition of Enterprise Architecture (EA) should always be transparent, the severity of the current economic downturn intensifies doubts about whether EA contributes to the economic survivability of
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For those of you who didn’t attend Scott Ambler and Terry Quatrani’s keynote “Software Development Strategies, Philosophies, and Techniques: Traditional vs. Agile” at this week’s SD West conference, let me
previous 10-Minute Solution demonstrated the new initialization rules of C++09, which enable you to initialize standard containers (among the rest) in the following manner: vector scores = {89, 76, 98,
y previous Android article showed how to store data from Android using a SQLite database. Storing your data in a database is one good way to persist your data, but
Use the following steps to access the VB ActiveX DLL through VC++6.0: Provide the ProgId -> as input. This finds the CLSID using the CLSIDFromProgId function. To create an instance
As many developers have found when uploading files from an FTP server or shared drive, by default, ASP.NET programs cannot upload a dataset from a file that exceeds 4MB. You
lickOnce is a powerful and easy-to-use deployment technology that offers a relatively hassle-free experience for end users, when properly configured. Unfortunately, the developer story for ClickOnce varies from super simple
It can be annoying to type long path names at the DOS command prompt. To avoid having to do so in Windows, you can enable DOS’s auto-completion feature, which is
ou might expect all SQL Server’s clauses to support a column alias. As reasonable as that assumption seems, SQL Server can’t honor a column alias in that way. If you
alidating an XML document entails confirming that the document is both well-formed and conforms to a specific set of rules specified with a Document Type Definition (DTD), an XML Schema,
In ASP.NET, if you try to use a session or request variable before it has been set, you’ll get an error. The following functions prevent this by checking for nothing
t the JAOO conference in Aarhus, Denmark this year, domain specific languages came up in virtually every conversation; every keynote mentioned them, a lot of sessions discussed them (including a
This code shows how to create a new event using AWTEventMulticaster. import java.awt.*;import java .awt.event.*;class Buton extends Component{ private Image button_pressed,button_released; private boolean press=false; ActionListener actionListener; public Buton(){ button_pressed=Toolkit.getDefaultToolkit().getImage(“?”); //pressed
This tip shows how to obtain the local absolute path of a class file containing the specified class name, as prescribed by the current classpath. Call this method as you
he inherent advantages to introducing queues into an application architecture are well understood. Queues, when used properly, can: Increase application robustness, as clients can send messages even when services are
I recently read the book, “33 Million People in the Room” by Juliette Powell. The subtitle inspired me to get rich quick: “How to Create, Influence, and Run a Successful Business
When handling an ASP.NET server-side button’s Click event, you may want to do some client-side checking and possibly prevent the posting of a page back to the server. However, because
Sometimes, you’ll notice that when you open a URL (with dynamic content, and especially a pop-up window) a second time, the page displays the data which was displayed earlier and