Excel VB.net

[Shaggy Hiker]

When I run this,

    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        For i = 1 To 21
            TextBox1.Text = i.ToString
            TextBox1.Refresh()
        Next
    End Sub

All I see in the textbox is "21". I know it's updating the textbox but it's to fast to see. But I'm old, maybe your eyes are better than mine.

It won't always update, even with Refresh. I've never spent any time trying to figure out why that would be. Refresh SHOULD cause execution of the loop to pause until the paint has happened, and usually it does....but if the loop is fast enough, sometimes it does not, which is really weird.