membuat hello world

Private Sub Command1_Click()
    MsgBox "Hello, World"
End Sub

A VB.NET example, MsgBox or the MessageBox class can be used:

Public Class Form1
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Msgbox("Hello, World")
    End Sub
End Class

Public Class Form1
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        MessageBox.Show("Hello, World")
    End Sub
End Class