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Use Boolean Variables for Check-Box Values

Visual Basic specifies a Boolean’s default values as zero for False and -1 for True. You may save and set the value of a check box, based on the absolute

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SQL and Tables

Question: If I have a table open, can I execute SQL.Open?I was going along fine querying different tables, but now I have a table.open and am trying to query the

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Who Has File Open on NT Server?

Want to know who has a particular file open on your NT Server? In NT 3.51, you could use File Manager to select a file on your server, use the

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Estimating Resource Percent Allocation

When generating project plans or timelines, never consider a resource as being 100% available. Most tracking tools allow you to put in the resource percent allocation. Even if someone is

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Center Page Vertically

Question: How do I center a page in a window vertically, without using returns or tables? Answer: It’s easy to center the page horizontally–all you need to do is use

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Resizing Images on the Fly

Question: I know that with DHTML, it is possible to resize images using the Onmousover event handler, but the example shown on the Microsoft Dev site involves basically switching between

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Changing screen resolution

Question: Is it possible to change the screen resolution to 640*480 before my project runs and change it back when the program exits. Or is there another way of rearanging

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Visual J++ 1.1 and Java 1.1

Question: I am using MS Visual J++ 1.1 1997 and it doesn’tcontain the java.util.Calendar class and java.text.* packages that you reference in the answer to another question. How do I

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Offscreen buffer

Question: I want to create an offscreen buffer in a Java application, but I don’t know how. Answer: You can create an offscreen buffer by usingthe createImage(int,int) in java.awt.Component.This is

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Converting String to double

Question: How can I convert a String to a double and backagain? Answer: You can use the java.text.NumberFormat classto convert a String to a double and back again.Use the parse(String)

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Always Use Relative Paths

No matter what language you are developing in, or whether you are developing programs or Web pages, never hard code paths to files that include drive letter distinctions (i.e. N:Images).

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SQL Feature to Integrate with COM Objects

SQL Server has a very powerful, but often overlooked, feature to integrate with COM objects. SQL itself can create COM objects from within Triggers or Stored Procedures, apply property values

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Utilize Version Control Mechanisms

If you are using SQL server, consider utilizing version control mechanisms for your triggers and stored procedures. Many times I have heard people wondering about changes to a procedure or

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Scheduled Walkthroughs and Reviews

Successful development groups implement regularly scheduled walkthroughs and reviews. I have found three common types: Code Walkthrough – At various points during the development life cycle, the developer or project

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Bandwidth-Friendly Separator Bars

If you want to create good-looking separator bars but aren’t satisfied withsolid colors or the download time of fancy graphical bars, try this easy andbandwidth-friendly method. Create a gradient image

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Avoid URL Root Name Dependencies

To avoid having to use a specific root name in your URL references, put allof your files except the default file (and global.asa if you’re using ASP)in named subdirectories and

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Keep Anchor Tags from Changing Color

Anchor tags usually change color after they have been “visited.” You cankeep this from happening in your site by using this style tag at the top ofeach document. Related Posts

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Notify Session Time Out When Using ASP

Each time a user connects to an ASP Web site, they are assigned a SessionID. Each session times out after 20 minutes by default (although you can adjust the timeout

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Use Inline Frames for Extra Power

With Internet Explorer (3.x and higher), you can use an inline frame to provide a rectangular area into which you can write or retrieve content. An inline frame essentially opens

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JavaScript Cookies

Question: How long can a document.cookie string be? In other words, how many cookies can I set? Answer: There are a number of important limitations on the use of cookies

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Exceptions as objects

The traditional convention of sending an integer as an error flag is problematic and unsatisfactory in OOP. The C++ exception handling mechanism can offer much more flexibility, safety and robustness.

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Accessing a string element

The standard string class offers two ways to access a single character from a string object. The first one is to use the overloaded subscript operator [ ] like in

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Consistent operator overloading

Whenever you overload operators such as + or -, it is useful to support the corresponding += and -= as well. As opposed to a common belief, the compiler will

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Handling E-mail with HTML, CDO, and SMTP

here are some mighty powerful e-mail solutions out there in network land. Just look atthe size of Microsoft Exchange. But how about handling your intranet e-mail with somethingfast, light, cheap

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SQL Server on the Web

icrosoft SQL Server is a great database for Web sites, especially Web sites deployed on NT and using Microsoft’s IIS server. It’s easy to install, relatively cheap, and interacts well

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Customizing Style Sheets on the Fly

‘m afraid that age is catching up with me.  Once, in my distant youth (well, maybe not all that distant), my eyesight was about perfect?I could make out inch high