Jak przerobić kod z Visual Basic do Visual C++?

Witam, posiadałem taki kod w Visual Basicu, był to kalendarz z przypomnieniem, robiony z pomocą tutoriala:

Imports System.IO

Public Class Form1

    Dim m As MsgBoxResult
    Dim t As String
    
    Private Sub MonthCalendar1_DateSelected(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DateRangeEventArgs) Handles MonthCalendar1.DateSelected
        t = MonthCalendar1.SelectionRange.Start.Month.ToString & MonthCalendar1.SelectionRange.Start.Day.ToString

        Try
            If File.Exists(t & ".txt") = True Then
                MonthCalendar1.Enabled = False
                MonthCalendar1.Hide()
                TextBox1.Enabled = True
                TextBox1.Show()
                Button1.Enabled = True
                Button1.Show()
                Button2.Enabled = True
                Button2.Show()
                TextBox1.Text = File.ReadAllText(t & ".txt")
            Else
                m = MsgBox("Czy chcesz dodać powiadomienie na ten dzień?", MsgBoxStyle.YesNo)
                If m = MsgBoxResult.Yes Then
                    MonthCalendar1.Enabled = False
                    MonthCalendar1.Hide()
                    TextBox1.Enabled = True
                    TextBox1.Show()
                    TextBox1.Text = ""
                    Button1.Enabled = True
                    Button1.Show()
                    Button2.Enabled = True
                    Button2.Show()
                End If
            End If
        Catch ex As Exception
            MsgBox(ex.Message)
        End Try
    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        TextBox1.Enabled = False
        TextBox1.Hide()
        Button1.Enabled = False
        Button1.Hide()
        Button2.Enabled = False
        Button2.Hide()
        MonthCalendar1.Enabled = True
        MonthCalendar1.Show()
    End Sub

    Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Try
            If TextBox1.Text = "" Then
                If File.Exists(t & ".txt") = True Then
                    File.Delete(t & ".txt")
                End If
            End If
            If TextBox1.Text.Length > 0 Then
                File.WriteAllText(t & ".txt", TextBox1.Text)
            End If
        Catch ex As Exception
            MsgBox(ex.Message)
        End Try
    End Sub

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim m1 As MsgBoxResult
        t = MonthCalendar1.SelectionRange.Start.Month.ToString & MonthCalendar1.SelectionRange.Start.Day.ToString

        If Date.Today = MonthCalendar1.TodayDate And File.Exists(t & ".txt") = True Then
            m1 = MsgBox("Masz powiadomienie na dziś! Chcesz je zobaczyć?", MsgBoxStyle.YesNo)
            If m1 = MsgBoxResult.Yes Then
                MonthCalendar1.Enabled = False
                MonthCalendar1.Hide()
                TextBox1.Enabled = True
                TextBox1.Show()
                Button1.Enabled = True
                Button1.Show()
                Button2.Enabled = True
                Button2.Show()
                TextBox1.Text = File.ReadAllText(t & ".txt")
            End If
        End If
    End Sub

  
End Class

 

Jak coś takiego przerobić na Visual c++, bo niektóre komendy nie działają?

Które komendy nie działają.