C# 强制转换GridView的数据为DataTable

        /// <summary>
        /// 强制转换GridView的数据为DataTable
        /// </summary>
        /// <param name="dgv">需换换的GridView</param>
        /// <returns>返回DataTable</returns>
        public DataTable GetDgvToTable(DataGridView dgv)
        {
            DataTable dt = new DataTable();
            for (int count = 0; count < dgv.Columns.Count; count++)
            {
                DataColumn dc = new DataColumn(dgv.Columns[count].Name.ToString());
                dt.Columns.Add(dc);
            }
            for (int count = 0; count < dgv.Rows.Count; count++)
            {
                DataRow dr = dt.NewRow();
                for (int countsub = 0; countsub < dgv.Columns.Count; countsub++)
                {
                    dr[countsub] = dgv.Rows[count].Cells[countsub].Value;
                }
                dt.Rows.Add(dr);
            }
            return dt;
        }