Constants (VB.Net and C++ Cross Reference Guide)

In VB.Net, you define constants with the Const keyword.

All constants are part of a class (no global constants) but you can make a constant public and have access to it using ClassName.ConstantName so long as you have added the class to the project. This works even without creating the class as if the public constants were static, but you cannot use the Shared keyword.

Constants must be of an integral type (sbyte, byte, short, ushort, int, uint, long, ulong, char, float, double, decimal, bool, or string), an enumeration, or a reference to null.

Public Class Convert
  Inherits System.Object

  Public Const kName As String = "Mike"

  Private Const kPI Double = 3.1459

  //Declare two or more on same line too:
  Const kFeetToMeter = 3.2808, kMeterToFeet = 0.3048
End Class

 VB.Net Constants (Const kPI Double = 3.1459)  

In standard C++, you use const and static const to declare constants.

//C++Builder 2009 Example:

const String kName = "Mike";
const int kAge = 35;

ShowMessage("Hi " + kName + ", you are " + kAge + ".");