Make all Controls on a Form read-only at once

Question

Does anyone have a piece of code to make all Controls (or even all TextBoxes) in a Form which is read-only at once without having to set every Control to read-only individua

Answer 1

I would use reflection to check to see if the generic Control object has an Enabled property.

private static void DisableControl(Control control)
{
    PropertyInfo enProp = control.GetType().GetProperty("Enabled");
    if (enProp != null)
    {
        enProp.SetValue(control, false, null);
    }

    foreach (Control ctrl in control.Controls)
    {
        DisableControl(ctrl);
    }
}