ARCed.Database.Animations.AnimationMainForm.listViewTiming_MouseDown C# (CSharp) Method

        private void listViewTiming_MouseDown(object sender, MouseEventArgs e)
        {
            if (e.Clicks == 2)
            {
                using (var dialog = new AnimationTimingDialog())
                {

                    var indices = this.listViewTiming.SelectedIndices;
                    int index = indices.Count > 0 ? indices[0] : -1;
                    dialog.Timing = index >= 0 ? this._animation.timings[index] : new Animation.Timing();
                    if (dialog.ShowDialog() == DialogResult.OK)
                    {
                        if (index >= 0)
                            this._animation.timings[index] = dialog.Timing;
                        else
                            this._animation.timings.Add(dialog.Timing);
                        this.RefreshTimings();
                    }
                }
            }
        }