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Question: I am inserting some text into a DIV in Netscape using the .open, write(), and close() methods. At first there is nothing in the DIV, and when I check
If you fully understand how VB and VBA work, you can often save some statements. This makes your listings more concise and more readable, and indirectly optimizes your program. Here
Let’s assume you must test whether the most significan bit of an integer value is set or not. This is the code that you usually write: ‘ two cases, depending
You can often use the Instr function in an unorthodox way to write more concise code. A typical example is when you need to test a single character: ‘ test
Use IIf when setting a value based upon an expression. This works only in situations where you have two choices, based upon the result of a Boolean expression. ‘long wayIf
When setting a Boolean value based upon the result of an expression, avoid using an unnecessary If/Then/Else structure. ‘Instead of using this lengthy syntax . . .If SomeVar > SomeOtherVar
Many VB developers don’t realize that the Switch built-in function can often save a lot of code. This function takes any number of (expr, value) pairs, it evaluates all expressions
The Choose function lets you often make more concise, albeit not faster, code, because it lets you replace a lengthy Select Case block. For example, the following code: Select Case
It is always easy for people who know Visual Basic to write code inVBScript. But sometimes you make some common mistakes because of the implementation differences between VB and VBScript.One
If you want to rebuild the master database you can run Rebuildm.exe command prompt utility. This utility allows you to rebuild the master database to change the character set, sort
Use the SendMessage API to set tab stops in a VB listbox by creating these declarations and this routine in a module: Private Declare Function SendMessage Lib _ “user32” Alias
The IsLoaded function tests to determine if any instances of a form are already loaded or exist in memory: If IsLoaded(“frmMyForm”) Then Debug.Print “frmMyForm is loaded”End IfPublic Function IsLoaded(sForm As
Question: I am trying to put all the checkboxes in a CheckboxGroup into anunselected state, but Checkbox.setState(false) does notautomatically unselect the checkbox once a checkbox has been selectedwithin a CheckboxGroup.
Question: When a request message is processed through the HttpServlet doGetmethod, who sets the parameters and attributes for theHttpServletRequest argument? And what is the difference between anattribute and a parameter?
Question: How can I have my servlet display an HTML file,located on the server, on the client’s browser? Answer: The HttpServlet class makes it very simple to send and receiveinformation
Question: What is the basic difference between JavaBeans and Enterprise JavaBeans? Answer: JavaBeans are a set of conventions and APIs for creating reusablesoftware components. The primary benefit is for visual
Question: How can I get the binary representation of a letter or number? Forexample, the letter “A” is 100 0001, the letter “B” is 100 0010, etc… Answer: You can
Question: I am in the process of installing Exchange 5.5 for the first time. I need some help understanding the basic concepts of this system. How do I get the
You can use Supports() method of ADODB.Recordset object to write robust code. This method takes in a enum parameter and returns a boolean value which can be used to determine
In olden days, before C++ appeared, it was customary to declare a struct as a typedef name. For example: typedef struct DATE_TAG { int day; int month; int year; }
Here is a simple way to provide popup window functionality in your Webpages. The idea is to display a popup window if the user moves the mouseover certain text areas
This tip is an update to “Translate Color Values”. That method converted numbers to strings, then performed string manipulation to get individual RGB values. This solution uses a concept near
To some extent, the use of fully qualified names is the recommended way of referring to namespace members because it uniquely identifies and yet it avoids name conflicts. For example:
Question: I have a menu system that loads the name of a form into the appropriate menu item. How would you load the form from that item, considering that when
Question: I have to use the arctan function but there are onlyarcsin and arccos in VB. And arctan is not equal toarcsin/arccos. I have lost almost all of my trigonometry
Question: I have been unable to add a new label onto my form at run time because the ‘new’ command doesn’t seem to work for a label. What’s the best
Question: As new to Visual Basic, I am having trouble understanding the difference between Sub a Procedure and a Function Procedure. And I would also like to know where and
Question: I hope that you might be able to help me with the problem I am experiencing. I am developing an application in VB6 using ADO Data Control. I need
Here is a simple way by which you can dynamically change the title of the browser window (or an HTML page). There are certain scenarios where you can use this
A transaction can be defined as a related set of operations that read and modify data in a single batch. Every transaction should follow the ACID rule, where ACID stands
