將dataGridView數據轉成DataTable

如DataTable已綁定過數據源：

DataTable dt = (dataGridView1.DataSource as DataTable)

remark：使用上面的方法時，把DataGridView的數據賦給沒綁定數據的DataTabe，之后改變DataTable時貌似會改變復制的DataGridView的數據

 

如DataTable未綁定過數據源：

        /// <summary>
        /// 綁定DataGridView數據到DataTable
        /// </summary>
        /// <param name="dgv">復制數據的DataGridView</param>
        /// <returns>返回的綁定數據后的DataTable</returns>
        public DataTable GetDgvToTable(DataGridView dgv)
        {
            DataTable dt = new DataTable();
            // 列強制轉換
            for (int count = 0; count < dgv.Columns.Count; count++)
            {
                DataColumn dc = new DataColumn(dgv.Columns[count].Name.ToString());
                dt.Columns.Add(dc);
            }
            // 循環行
            for (int count = 0; count < dgv.Rows.Count; count++)
            {
                DataRow dr = dt.NewRow();
                for (int countsub = 0; countsub < dgv.Columns.Count; countsub++)
                {
                    dr[countsub] = Convert.ToString(dgv.Rows[count].Cells[countsub].Value);
                }
                dt.Rows.Add(dr);
            }
            return dt;
        }

　　

參考：http://www.cnblogs.com/linji/archive/2012/10/11/2719471.html