Question

I totally don’t get it , why i got a Additional information: Bad file name or number when Button1 was clicked in VS2008SP1 ?

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    Dim i As Integer = 0
    Do
        i += 1
        Print(i)

        If i >= 10 Then
            Print "I is above 10"
        ElseIf i >= 20 Then
            Exit Do
        End If
    Loop While (i <= 30)
End Sub

Answer 1

Don’t use Print(). Print() function is used to write data into a file. To print number in debug window use Debug.Print() method.