datagridview 选中行上移下移

 /// <summary>        /// 数据上移一条        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        private void tsbBack_Click(object sender, EventArgs e)        {            int i = dgvMain.Rows.GetPreviousRow(dgvMain.CurrentRow.Index, DataGridViewElementStates.None); //获取原选定上一行索引            dgvMain.Rows[i].Selected = true; //选中整行            dgvMain.CurrentCell = dgvMain[0, i]; //指针上移        }        /// <summary>        /// 数据下移一条        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        private void tsbNext_Click(object sender, EventArgs e)        {            int i = dgvMain.Rows.GetNextRow(dgvMain.CurrentRow.Index,DataGridViewElementStates.None); //获取原选定下一行索引            dgvMain.Rows[i].Selected = true; //选中整行            dgvMain.CurrentCell = dgvMain[0,i]; //指针下移        }