Display Leap Year 1900 To 2023 Using List Box in Visual Basic NET

 A program that I wrote using Microsoft Visual Basic NET to display leap years from 1900 To 2023 Using List Box.

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Program Listing

Public Class Form1

    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        Dim startYear As Integer = 1900
        Dim endYear As Integer = 2023

        For y As Integer = startYear To endYear
            If Date.IsLeapYear(y) Then
                Dim x As Integer
                For x = y To endYear Step 4
                    If Not Date.IsLeapYear(x) Then Exit For
                    ListBox1.Items.Add(x)
                Next
                If x = endYear Then
                    Exit For
                Else
                    y = x
                End If
            End If
        Next
    End Sub
End Class