IBE.EDDB_Data.EDCommodityListView.cmdCancel_Click C# (CSharp) Méthode

        private void cmdCancel_Click(object sender, EventArgs e)
        {
            if (m_DataChanged)
            {
                if (MessageBox.Show("Dismiss Changed Data ?", "Commodity Data Changed",  MessageBoxButtons.OKCancel,  MessageBoxIcon.Question) == System.Windows.Forms.DialogResult.OK)
                { 
                    this.Close();
                }
                else
                {
                    this.DialogResult = System.Windows.Forms.DialogResult.None;
                }
            }
            else
                this.Close();
        }