Public Class Form1

    Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
        TextBox1.Text = "Hellow World"

    End Sub


    Private Sub Button1_DoubleClick(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.DoubleClick
        TextBox1.Text = "I love you"
    End Sub
End Class