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.
Question: Should I use a database for storing info, rather than random access files? The info I need to store could be rather large. I also will need much more
Question: In writing a VB database application, is it more effecient to open up the database once in the beginning of the program, and build queries/recordsets to access the appropriate
Question: I have written a calendar function using the standard grid control as the calendar. The text property of each row/column is set to the correct day within the month
Question: How can I determine the type of object that I click, using only one general procedure? What I mean is that I want to have several objects of any
Question: How do I create a bit-mask in VB? What I wish to do is “read” a binary number where each bit represents a different state for an electrical system.
Question: How can I use Access 7.0 databases within my Visual Basic 4.0 Professional Application?Everytime I try to open such a database, I always get error messages. Answer: I’m guessing
Question: This is the first time I visited your site, and its the best VB site I’ve been too! My question is, I’m writing a sql statement using Variables and
Question: I am in the process of building an application where I needa grid of small graphics (icons or BMPs) in an array situation.When the user clicks on one graphic
Question: I am writing a Visual Basic application that will require the user to enter a password. I have a inputbox set up for the user to enter the password.
Question: Is it possible to change the MDICHILD property atruntime? I will give birth to your children if you have an answer. Answer: Well, I have an answer, but you’re
Question: We are experiencing real speed problems with this platformon Windows 95. we are using Pentium 100 machineswith 16megs of ram. The project compiles to about 3megs. The main screens
Question: I am new to VB programming and have noticed thatthere are a lot of properties for an item that are not listedin the property box (e.g. clear,delete item,add item,select,etc)Is
Question: I am working on a system with Windows ’95 and Office for Windows ’95. This includes Access 7.0. How can I get VB 3.0 to recognize databases I have
Question: After a structure is defined witha “TYPE” declaration, do you know of a way to directly fillthe structure with data, rather than individually assigingthe elements, or reading from a
Question: I would like to read audio CD information directly from VB.At this point I have no idea how it is done, but as I want to writea database program,
Question: How can I make the little folders yellow and the little drives gray in the File List Box? I have tried background color, this just makes the background of
Question: A VB form displays select financial numbers from an Access DB. The user can build a calculation. If the arithmetic operation is stored as text in the DB, how
Question: Is there any command in visual basic which is similar to fork command in c? Answer: It’s not exactly the same, but the Shell statement will allow you to
Question: Is there an advantage to using a control array instead of using x number of labels, textboxes, etc ? Answer: There are several advantages to using control arrays. First
Question: I’m working with Visual Basic and Access 1.1. Currently my program uses two tables (tblrep and tblsales). The common field being tblrep.id = tblsales.id. The first form of the
Question: I have written a testing program that writes results to a grid.How do I write the grid to disk so that changes can be addedfrom testing session to testing
Question: I need to place multiple option buttons on a form. I alsoneed to be able to have two buttons selected at all times.I can do this with multiple frame
Question: I am using VB together with Access. What I want to do is to include photo into my form. In Access table, I declare thisfield as an OLE field
Question: What it’s the correct SQl Statement to search an access database by a numeric field? I keep getting an invalid type error when I try to run the application.
Question: I am having a problem that I hope has not been answered herebefore. I am experiencing different results when I run a program than I do when I use
Question: I don’t know how to access individual characters in a string.ie. accessing single elements in an array of characters.Each time I try I keep getting Type mismatch. Answer: You
Question: I have a formless VB exe program that creates VB modules(.bas) and saves them to disk.Is there a way of having my program start VB passing my module name
Question: I have a copy of data widgets from sheridan sware and am using the SSDataGrid provided. All i want to do is insert data in the grid at a
Question: I’m using the 3D Panel in my application. When I setits background coulor to light grey, it looks fine onmy workstation but it’s white in any other workstations.That’s true
he technologies of Message Transmission Optimization Mechanism (MTOM) and XML-Binary Optimized Packaging (XOP) are concerned with the fundamental issue of binary data transmission, which is
ost developers understand the value of the layered approach to architecture. The main principle behind layered architectures is that of “separation of responsibility”. Each layer
rrors and exceptionsare two similar notions that differ in one crucial aspect: exceptions are a runtime concept, whereas errors are anomalous conditions that can and
n Article 1 of this series, you saw how to create a custom configuration section in a Web.config file and access it using a custom
As you know, the EJB container offers strong support for “save/load” the state of a stateful bean. The problem arises when you have to deal
This script was written to monitor a program whose process life was only a few seconds. It runs forever and only outputs that SQL which
This is in response to the original “Escape Sequences in .NET Resource Files, by Boris Eligulashvili. There is actually another way to insert escape sequences,
nterprise Application Integration (EAI) is a collection of architectural principles combined to integrate new and existing applications both within the enterprise and in business to
any developers have started to warm to the power and simplicity of Ruby. While the language is simple and powerful, one of the hits against
he Asynchronous JavaScript and XML (AJAX) technology is notorious for making the user experience in web browsers more efficient, dynamic, and enjoyable and can minimize
y previous article discussed the new Application Settings feature in Windows Forms 2.0. The article demonstrated this feature using C#. However, the application settings feature
his article describes one simple solution for achieving interoperability between Windows Workflow (WF) and ASP.NET. It leverages the power of WF’s powerful visual logic to