Visual Basic® .NET by Example

The If Statement

The If statements is one of the most common Visual Basic statements. It allows you to execute one or more statements only when a specific condition is met. This condition is a Boolean expression that will evaluate to True or False. Let's look at an example:

Sub Main()
   Console.Out.WriteLine("Enter a value for i and press <ENTER>: ")
   Dim i As Integer
   i = CInt(Console.In.ReadLine())

   Console.Out.WriteLine("Enter a value for j and press <ENTER>: ")
   Dim j As Integer
   j = CInt(Console.In.ReadLine())

   If i < j Then
      Console.Out.WriteLine("i is less than j")
   End If

   Console.Out.WriteLine("Press the <Enter> key to end the program")
   Console.In.ReadLine()
End Sub

These example declare two Integer variables i and j and gets some values for ...