[RESOLVED] Button cannot do job if...[HELP]

[JugglingReferee]

Also, note that you did say "the button does not work". You can disable the button so that it will not respond if a user tries to click it:

Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged
    If TextBox1.Text = "" Then
        Button1.Enabled = False
    Else If TextBox1.Text <> "" Then
        Button1.Enabled = True
    End If
End Sub