BrightIdeasSoftware.ObjectListView.ToggleSelectedRowCheckBoxes C# (CSharp) Method

        private void ToggleSelectedRowCheckBoxes()
        {
            // This doesn't actually toggle all rows. It toggles the first row, and
            // all other rows get the check state of that first row.
            Object primaryModel = this.GetItem(this.SelectedIndices[0]).RowObject;
            this.ToggleCheckObject(primaryModel);
            CheckState? state = this.GetCheckState(primaryModel);
            if (state.HasValue) {
                foreach (Object x in this.SelectedObjects)
                    this.SetObjectCheckedness(x, state.Value);
            }
        }