Although you can use either a & or a + to concatenate values, my preference is to use a + because more languages use it. However, if you use & then some type conversions are done for you. If you use + you will sometimes have to cast a value to concatenate it. For example, you will have to use CStr to cast a number to a string if you use the + operator as a concatenation operator.

Dim FirstName As String
Dim LastName As String
 
FirstName = "Mike"
LastName = "Prestwood"
 
MsgBox "Full name: " & FirstName & " " & LastName

 
MsgBox "2+2=" + CStr(2+2)

Keep abreast of what's taking place in the world of Microsoft Office Access directly from the members of the Access Team.

Yes, you can either convert it to Access 2003 format or leave it as 2002 format and use it with Access 2003.

Sallie Mae to create 2,000 jobs, return its overseas operations to U.S.

An example of using ASP's Response.Write and creating functions.

//Does ASP evaluate the math correctly? No!

If .1 + .1 + .1 = .3 Then
  Response.Write "correct"
Else
  Response.Write "not correct"
End If

Boxing is the conversion of a value type to the object type (or to any interface type that is implemented by the value type). Unboxing is the conversion from an object type to a value type (or from an interface type to any value type that is implemented by the value type).

This will show how to make a "hello world" console application in Visual Studio 2008 with C#. Let VS.Net do the work and create a new console application using the menu. Use Console.WriteLine and Console.ReadLine for simple input and output.

Simple syntax example of class inheritance.

In the following example, a terminator T-600 is-an android. 

public class Android

{

}

public class T-600 : Android

{

}

You don't have to do anything special in your application. However, you do have to give certain folders and files the correct rights in your installer.

Same as standard C++. C++ uses a semicolon ";" as an end of statement specifier and you can put multiple statements on a single line of code if you wish as well as split a single statement into two or more code lines.

//.Net WinForms example.

//Add, using namespace System::Windows::Forms;

MessageBox::Show("Hello1");

MessageBox::Show("Hello2");

MessageBox::Show("Hello3");

MessageBox::Show("Hello4"); MessageBox::Show("Hello5"); 

MessageBox:: 

  Show 

    ("Hello6");

Download BDE 5.202 (includes a small BDE Information utility for testing the installation).

Our most popular article in the history of our online community! Explains the "is a", "has a", "uses a", and "looks like" relationships (updated May 2007). "Is a" is inheritance, "looks like" is interfaces, "has a" is aggregation, and "uses a" is composition.

Download the free Visual Studio.Net 2008 90-day trial edition.

Try Visual Studio.Net 2008
Microsoft Visual Studio 2008 provides an industry-leading developer experience for Windows Vista, the 2007 Microsoft Office system, and the Web. In addition, it continues in the Microsoft tradition of development language innovation. To enable evaluation of Visual Studio 2008, this page provides links to trial editions of Visual Studio 2008.

The SerialPort class introduced in .NET 2.0 is definitely better than writing unmanaged Win32 API calls to access the serial port, but this is much better.

Without going into too much detail, a recent project of mine required that my application interface with an obscure device via RS232 and the serial port.

To do what I needed the device to do required me to manipulate the signal (high/low) on the RTS pin; the .NET framework's SerialPort class didn't really give me a mechanism for doing so.  Wanting to leave writing Win32 API p/invoke calls a last resort, the first result in a Google search for "better .NET serial port" led me to this article on CodeProject which described CommStudio's CommStudio Express which includes a much better serial port (SerialConnection) class which quickly enabled me to get past my little setback an on with the application. Best of all it's free!

I hope this referral link helps you.

This tutorial shows how you would create a trigger in Microsoft SQL Server 2005/2008 that will date/timestamp a column named last_updated everytime any data in the row is updated.

This example assumes a primary key that includes 3 fields.

CREATE TRIGGER MyTableUpdate
ON dbo.MyTable
FOR update
AS
UPDATE
MyTable
SET last_updated = GetDate()
From MyTable Inner Join Inserted On
MyTable.KeyField1 = Inserted.KeyField1
and MyTable.KeyField2 = Inserted.KeyField2
and MyTable.KeyField3 = Inserted.KeyField3

In Delphi, you specify a virtual method with the virtual keyword in a parent class and replace it in a descendant class using the override keyword. Call Inherited in the descendant method to execute the code in the parent method.

Object Pascal

• Operator - Yes. But not Pascal.
• Method - Yes.  

function Add(a, b: integer): Integer;  overload;
begin
  Result := a+b;
end;

function Add(const msg: String; a, b: integer): String; overload;
begin
  Result := msg + IntToStr(a+b);
end;

For abstract methods, you must specify either regular virtual with the virtual keyword or dynamic virtual with the dynamic keyword. In Delphi for Win32, virtual methods are optimized for speed and dynamic methods are optimized for size. The Delphi help indicates to use virtual for most situations. 

It is true that the compiler could make virtual the default and therefore optional but requiring one or the other is consistent with Object Pascal's strong typing.

Simple syntax example of class inheritance.

Java does not support multiple implementation inheritance. Each class can have only one parent class (a single inheritance path). In Java, you can use multiple interface usage to design in a multiple class way horizontally in a class hierarchy.

You can test whether you have Java installed at http://www.java.com/en/download/help/testvm.xml.

Inhtml pages, you embed JavaScript code between <script> and </script> (see example). Also it's tradtional to put an HTML comment around your code too so that really old browsers don't crash (probably not all that important these days).

For JavaScript, Java, PHP, and C++, I prefer to put the first { at the end of the first line of the code block as in the example above because I see moreJavaScript codeformatted that way.

<script language="JavaScript" type="text/javascript">

<!--

function DisplayDialogLg(StrURL) {
}

if (x == -1) {

}

-->

</script>

javascript:MM_openBrWindow('http://www.prestwood.com/shop/purchase_orders.html', 'compare', 'scrollbars=no, resizable=no, width=600, height=420')

Chapter 4, "An Introduction to ObjectPAL" from Paradox 9 Power Programming by Mike Prestwood.

Paradox for Windows Command-Line Options, runtime registry settings, adding menu items to Paradox, and manually setup a Vista shortcut.

ObjectPAL is not case sensitive. My preference for ObjectPAL is to follow the camel casing promoted in the examples and help files originally developed by Borland.

All of the following are equivalent:

msgInfo "", "Hello"

MsgInfo "", "Hello"

msginfo "", "Hello"

MSGINFO "", "Hello"

Variables are not case sensitive.

Var
 FullName String
endVar

fullname="Mike Prestwood"
msgInfo("", fullNAME)

I'm making a DLL Call and I need to pass a logical, I tried passing an ObjectPAL logical data type and that didn't work. How do I pass a logical to a function in a DLL?

With DLLs you are limited to the DLL Uses types of CWORD, CLONG, CDOUBLE, CLONGDOUBLE, CPTR, and CHANDLE. All other parameter types must be mapped to one of these fundamental data types. Because logicals are really just null, 0, or 1, you can use a CWORD which maps to ObjectPAL's SmallInt data type (an integer).

Perl is case sensitive.

print "hello"; //This works.

Print "hello"; //This does not.

An Introduction to PHP. Installing PHP on Your Computer and Running your First Script.

With PHP, you simply copy your files to a web server that is capable of running PHP pages.

Knowledge base comments are now numbered 1 of x, 2 of x, etc. and the first comment is marked as well as the latest comment.

The Prism unary operators are:

+
-
Not

Declare your class in the Interface section. Then implement the class in the Implementation section. To create an object instance, use the New keyword. Optionally, you can use Create for backword compatibility with Delphi if you turn it on in the compatibility options. Since Prism does have a garbage collector, you do not have to free the object. If you need to free either unmanaged resources or resources where "timing" is important, implement IDisposable and take control of freeing the object yourself using Dispose.

Same as in Delphi for Win32 but Prism also supports inline variable declaration.

function DoSomething : integer;

var

 a, b : integer;

begin

 a := 1;

 b := 2;

 var c : integer; //Prism allows inline (local) variables.

 c := a + b;

 result := c;

end;

The obvious differences between Delphi Prism and C# are additional features in the Delphi Feature Pack (Blackfish SQL etc.) and the Object Pascal based syntax, which are very attractive for developers skilled in Delphi for Win32, for example. However, the compiler adds a wide range of extemely useful enhancements as well.

The short answer is at the end of each phase. For larger projects, you may wisth to review more frequently. For all size projects this should not interfere with the normal communication.

If you're using PSDP Online, review the tasks online at the end of each phase. It's a convenient way to view both the big picture total hours as well as drilling down into each task. You can view by phase, category, checkpoint, start date, or due date. If the scope of the project is too large, move items to the wishlist.

With the Rolling Estimates approach, the minimum project budget is adjusted at the end of Requirements, and Detail Design phases. The true scope of the project is known at the end of the detail design phase.

Can I run a Gigabit network over Category 5 or Category 5e?

No to CAT 5, or at least almost never. Yes to CAT 5e. Category 5e cable is enhanced over Category 5 to adhere to more stringent standards and is recommended over CAT 5 for speeds above 100 Mbps and up to 1 Gigabit.

However, Category 6 or 6a is recommended over CAT 5e because of it's even higher quality and some properly installed CAT 6 networks can support 10 Gigabit speeds. Although for 10 Gigabit, CAT 6a is recommended.

CAT 7 is rated for 10 Gigabit but supports up to 100 Gigabit.

Using real world scenarios when you write conceptual documentation for Software Development Kits (SDKs) is a way to give your readers ideas as to how the SDK can be used and to guide them as to what APIs are needed for commonly expected scenarios. This article guides you through how to gather information about scenarios, how to simplify them in order to make good examples, and how to lead developers through which APIs to use.

Save as VB Classic. Common comparison operators:

//Does VB evaluate the math correctly? No!

If 0.1 + 0.1 + 0.1 = 0.3 Then
  MsgBox "correct"
Else
  MsgBox "not correct"
End If

VB.Net supports both static members and static classes (use the keyword Shared). You can add a static method, field, property, or event to an existing class.

You can designate a class as static and the compiler will ensure all methods in that class are static. You can add a constructor to a static class to initialize values.

The CLR automatically loads static classes with the program or namespace.

Public Shared Function MySharedFunction() As Integer
  MySharedFunction = 12345
End Function 

Depends on the software. If a software installation relies on something that is disabled in Safe Mode, then it will not install correctly. In addition, some software will not let you. For example, Norton Anti-Virus will not allow you.

If you boot up in Safe Mode with Networking, you can also browse the internet. For example, you can frequently browse to http://www.trendmicro.com and use their free online virus scanning software to remove viruses that have disabled your computer.