How to make those rows/cells editable which are marked as check in checkbox and rest rows/cells shoud be readonly if the checkbox is not checked mark

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C#

WinForms

Here I want to make only those cells editable for what Checkbox is marked and but unable to make non editable which are not even checked mark. Please help me User can't edit any cells which are not checked mark in Checkbox

What I have tried:

foreach (DataGridViewRow dgvrow in dataGridView1.SelectedRows)
            {
                if (Convert.ToBoolean(dgvrow.Cells["chkbox"].Value) == true)
                {

                    LOB = dgvrow.Cells["lOBDataGridViewTextBoxColumn"].Value.ToString();
                    POL_NUM = dgvrow.Cells["polNumDataGridViewTextBoxColumn"].Value.ToString();
                    POL_Effdate = Convert.ToDateTime(dgvrow.Cells["polEffDtDataGridViewTextBoxColumn"].Value);
                    POL_Expdate = Convert.ToDateTime(dgvrow.Cells["polExpDtDataGridViewTextBoxColumn"].Value);
                    tbl_pol_coll_agmt_dtls_id = Convert.ToInt32(dgvrow.Cells["TBL_POL_COLL_AGMT_DTLS_ID"].Value);


                    if (MessageBox.Show("Would like to update the click yes!!",
                        "Input Data", MessageBoxButtons.YesNo) ==
                        System.Windows.Forms.DialogResult.Yes)
                    {
                        collServCall.UpdateInputPolicyData(tbl_pol_coll_agmt_dtls_id, LOB, POL_NUM, POL_Effdate, POL_Expdate);
                    }
                }
            }