DataGridView中DataGridViewCheckBoxCell 控制选中

关于DataGridView中DataGridViewCheckBoxCell 控制选中，以下是单选实现，需要设置该列readonly属性为ture,否则只有当选中其他时才会有反应！

以下部分代码

 

 dgv.CommitEdit(DataGridViewDataErrorContexts.Commit);
                DataGridViewCheckBoxCell chktmp = (DataGridViewCheckBoxCell)dgv.Rows[e.RowIndex].Cells["chk"];
                if (!(bool)chktmp.FormattedValue)
                {
                    chktmp.Value = true;
                }
                for (int i = 0; i < dgvAccount.Rows.Count; i++)
                {
                   
                    if ( i != e.RowIndex)
                    {
                   
                        DataGridViewCheckBoxCell chk = (DataGridViewCheckBoxCell)dgv.Rows[i].Cells["chk"];
                        chk.Value = false;
                    }

                }

 

 判断是否选中

 for (int i = 0; i < dgv.Rows.Count ; i++)
            {
                dgv.CommitEdit(DataGridViewDataErrorContexts.Commit);
                DataGridViewCheckBoxCell chk = (DataGridViewCheckBoxCell)dgv.Rows[i].Cells["chk"];
                if (chk != null && (bool)chk.FormattedValue)
                {
                        
                }
            }