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Since 1998, DevX has helped people start businesses, build websites, and provide enterprise technology to people globally. Interviewing the likes of Microsoft’s co-founder, Steve Ballmer, the publication brings comprehensive, reliable, and accessible insights to the Internet.
or example, a number of financial institutions seem predetermined to use NIS to manage large numbers of accounts across a multitude of systems. So what’s the problem with that? Anyone
If you have a sensitive mouse and/or many objects you need to position carefully on a form, getting everything right can be a real pain?especially when you click on an
Use this tip when developing ActiveX components and testing ActiveX OCXs that require license files. These Registry entries allow you to merge VBL file contents into the Registry. You add
As you probably know, you can open an Explorer window on a directory from VB by using the intrinsic Shell function: Dim TaskId As LongTaskId = Shell(“Explorer c:”, vbNormalFocus) But
I needed to lock a row on a grid to show totals as well as a percentage row that needed to remain read-only to the user. I didn
Microsoft confirms this bug: If an application contains at least two forms, and one of those forms is displayed modally using a PopupMenu on another form, a PopupMenu on the
This code demonstrates how fast you can zoom into images using VB
When you use the Split function from VB6 or VBScript, sometimes you need only a single value and not the whole array. To do this, you can reference the element
If you plan to require Windows 2000 for your application, you can make your standard VB RichTextBox control 100-percent transparent with a few simple API calls. To try this tip,
In VB, we can use a function/sub call to return results by passing parameters by reference (although it
The path returned by App.Path is inconsistent. If the program is running in a root directory, the path will have a backslash on the end. Otherwise, it won
n RSS XML feed is an extremely simple way to let external sites link to content on your Web site. If you’re looking for a fast, painless way to do
This script gives a preview of an image file selected for upload (even before the upload process takes place). It works in both IE and Netscape. This way, users can
Ever want to use the Common Dialog “ShowOpenDialog” but were frustrated because it required that Visual Studio be installed on each user’s PC?Here’s an alternative written in VBScript that can
ust before Christmas, in an annual telebriefing designed to predict future technology trends, John Gantz, chief research officer of International Data Corp. (IDC), in Framingham, Mass., remarked that “a major
“The entire history of software engineering is that of the rise in levels of abstraction” said Grady Booch in his talk “The Limits of Software.” Today, we’re at the beginning
he previous lesson in this series (Learning to Animate in Macromedia Flash MX) introduced you to the Timeline and Keyframes?the basic building blocks of Flash MX animation. After this lesson,
revious articles in this series discussed ways of making development of Web services more efficient and the applications themselves highly manageable once deployed. But there is more that developers can
This ActiveX control enables browsing of Visual SourceSafe databases in form of a hierarchical tree. The control supports partial hierarchy loading to prevent delays while working with databases containing large
Sometimes you may want to gather the user input with a page, and process it in a different page. As you know, ASP.NET web forms can post only to themselves,
It is usual for a web form to have more than one button control. How can you set the default button that should submit the form and raise its Click
In a typical user registration form, you may ask for quite a lot of data, such as the first and last name, full address, phone and fax numbers, e-mail address,
If you want to share a value or an object instance between all the pages of any session, you typically use the Application object. However, a good alternative is to
Uploading a file from the client to the server is very straightforward with ASP.NET. Just use the tag and its wrapper class HtmlInputFile. Here’s how you define the control on
recently tested one of my J2ME MIDlet applications on a Sprint Vision handset. Once on the handset, the application ran great and I needed to make only a few changes
few weeks ago I was talking to someone about the origins of Java when I realized that I had big gaps in my knowledge of Java’s history. Trying to fill
When dealing with COM, unfamiliar database schemas, or regular code, sometimes you will find yourself wondering whether to test if a variable is Null by using either: IsEmpty(varname)IsNull(varName)If varname =
Defining a UNIQUE constraint on a computed column is a straightforward process, as the following example shows: CREATE TABLE T1 (col1 int NOT NULL,col2 AS col1 + 1 UNIQUE) However,
There is no T-SQL function for getting product of rows in a particular column. For example, say you had a table like this: –/////////////////////////////select * from #tbltest order by mydate
I’ve been bitten by MSVC++’s inability to have templated methods without the whole class being templated and today I figured out a workaround that allows you to maintain most of
