Boolean refers to a data type in Visual Basic .NET that can represent the value of true/false or yes/no. Below are examples of how to use Boolean in Visual Basic .NET:
1. Declaring a Boolean variable:
Dim isStudent As Boolean
2. Assigning a value to a Boolean variable:
isStudent = True
3. Using Boolean operators to compare values:
Dim num1 As Integer = 5
Dim num2 As Integer = 10
Dim result As Boolean
result = num1 < num2 'result will be true because 5 is less than 10
4. Using Boolean conditions in if statements:
Dim age As Integer = 20
If age >= 18 Then
Console.WriteLine("You are an adult.")
Else
Console.WriteLine("You are not yet an adult.")
End If
In this example, the condition "age >= 18" evaluates to true or false depending on the value of the age variable, which determines if the person is an adult.
5. Using Boolean in a loop termination condition:
Dim i As Integer = 0
Dim finished As Boolean = False
While Not finished
Console.WriteLine("The value of i is: " & i)
i += 1
If i = 10 Then
finished = True
End If
End While
This loop will continue to iterate as long as the variable "finished" is false, which is only changed to true when the value of i becomes 10.
Boolean values can be used in many situations where you need to evaluate conditions or make decisions based on true or false outcomes.