SURCHARGE CLASS FORM POUR PALIER AU PROBLÈME DE LA VALIDATION SYSTÉMATIQUE DES CONTRÔLES LORS DU CLOSE D'UNE FORM

using System;
using System.Windows.Forms;
using System.Security.Permissions;

namespace MonNameSpace
{
    /// <summary>
    /// Représente une version surchargée de la class Form
    /// </summary>
    public class MaForm : Form
    {
        private const int WM_CLOSE = 0x10;

        [UIPermission(SecurityAction.LinkDemand, Window=UIPermissionWindow.AllWindows)]
        protected override bool ProcessDialogKey(Keys keyData)
        {
            if (keyData == Keys.Escape && CancelButton != null)
            {
                AutoValidate = AutoValidate.Disable;
            }
            return base.ProcessDialogKey(keyData);
        }

        [SecurityPermission(SecurityAction.LinkDemand, Flags=SecurityPermissionFlag.UnmanagedCode)]
        protected override void WndProc(ref Message m)
        {
            switch (m.Msg)
            {
                case WM_CLOSE:
                    AutoValidate = AutoValidate.Disable;
                    break;
                default:
                    break;
            }
            base.WndProc(ref m);
        }
    }
}