CSL_Test__1.DataGridViewHandler.DeleteTorrents C# (CSharp) Method

        public void DeleteTorrents()
        {
            DataGridViewSelectedRowCollection dr = dv.SelectedRows;
            DataGridViewSelectedCellCollection dc = dv.SelectedCells;

            if (dr.Count > 0)
            {
                int total = dr.Count;
                double progress = 0;
                double count = 0;

                lock (obj)
                {
                    foreach (DataGridViewRow r in dr)
                    {
                        if (r.Index >= 0 && r.Index <= dr.Count)
                        {
                            try
                            {
                                dv.Rows.Remove(r);
                            }
                            catch (Exception rowremoveerror)
                            {
                                string message = rowremoveerror.Message;
                            }
                        }

                        progress = (++count / total) * 100;
                        if (progress <= 100 && progress >= 0)
                            this.ReportProgress((int)progress);
                    }
                }

                Save();
            }
            else if (dc.Count > 0)
            {
                foreach (DataGridViewCell c in dc)
                {
                    if (!(c.ReadOnly))
                    {
                        c.Value = "";
                    }
                }

                Save();
            }
        }