public static void showError(List <string> fehler)
{
if (formError == null)
{
formError = new FormError();
}
formError.listBox1.DataSource = fehler;
formError.BringToFront();
if (!formError.Visible)
{
formError.Show();
}
}
private void FormError_FormClosed(object sender, FormClosedEventArgs e)
{
formError = null;
}