Problem with sendkey

[nader]

I tried this sendkey but my PC has frozen. By the way I used XP windows and Microsoft Visual Basic 2005 Express Edition v2.

Private Sub TextBox1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles TextBox1.KeyDown
        System.Windows.Forms.SendKeys.Send("%+")
    End Sub