How to use char functions in VB.NET

In this article we will learn how to use char functions in VB.NET.

Char Functions

These are the following Char functions.

Char.ToUpper() Function

The ToUpper function is used to convert lowercase character to uppercase.

Syntax

char.ToUpper ("s")

This function returns a copy of the character in uppercase.

Char.IsDigit()

The IsDigit method Indicates whether the specified Unicode character is categorized as a decimal digit.

Syntax

Char.IsDigit (Char1)

This function returns true if str1 is a decimal digit, otherwise, false.

Char.Equals() Function

The Equals method is used to check whether this instance is equal to a specified object.

For example

The below example defines the char Functions.

Module Module1

    Sub Main()

        Dim str As Char

        str = Char.ToUpper("a")

        Console.WriteLine("This defines the Toupper function: " & str)

        Dim Char1 As Char

        Char1 = "8"

        If Char.IsDigit(Char1) Then

            Console.WriteLine("The character is a digit.")

        Else

            Console.WriteLine("The character is a letter or symbol.")

        End If

        Dim chA As Char

        chA = "A"c

        Dim chB As Char

        chB = "B"c

        Console.WriteLine(chA.Equals("A"c))

        Console.WriteLine("b"c.Equals(chB))

    End Sub

End Module

OUTPUT

Figure 1.