Forex_Strategy_Builder.Optimizer.Optimizer_FormClosing C# (CSharp) Method

        void Optimizer_FormClosing(object sender, FormClosingEventArgs e)
        {
            SaveOptions();

            if (isOptimizing)
            {   // Cancel the asynchronous operation.
                bgWorker.CancelAsync();
                e.Cancel = true;
            }
            else if (DialogResult == DialogResult.Cancel && isStartegyChanged)
            {
                DialogResult dr = MessageBox.Show(Language.T("Do you want to accept changes to the strategy?"),
                    Language.T("Optimizer"), MessageBoxButtons.YesNoCancel, MessageBoxIcon.Question);

                if (dr == DialogResult.Cancel)
                {
                    e.Cancel = true;
                }
                else if (dr == DialogResult.Yes)
                {
                    DialogResult = DialogResult.OK;
                }
                else if (dr == DialogResult.No)
                {
                    DialogResult = DialogResult.Cancel;
                }
            }
            else if (DialogResult == DialogResult.OK && !isStartegyChanged)
            {
                DialogResult = DialogResult.Cancel;
            }
        }