winfrom_DataGridView_点击任何单元格_自动勾选和取消第一列的checkbox

        private void dgvClass_CellClick(object sender, DataGridViewCellEventArgs e)
        {
            if (e.RowIndex == -1) return;
            if (e.ColumnIndex > 0)
            {
                if (dgvClass.Rows[e.RowIndex].Cells[0].Value == null)
                {
                    dgvClass.Rows[e.RowIndex].Cells[0].Value = true;
                }
                else
                {
                    dgvClass.Rows[e.RowIndex].Cells[0].Value = !(bool)dgvClass.Rows[e.RowIndex].Cells[0].Value;
                }
            }
        }