DataGridViewCheckBoxColumn的勾选框勾上了，Value却是false

private void dgvWebSiteOrder_CellClick(object sender, DataGridViewCellEventArgs e)
        {
          //此事件里面不能获取          if (row.Cells[this.colSelect.Name].Value != null && row.Cells[this.colSelect.Name].Value.ToString() == "1") 
        }
  private void dgvLinkOrderList_CellContentClick(object sender, DataGridViewCellEventArgs e)  {         //此事件里面不能获取         if (e.ColumnIndex < 0 || e.RowIndex < 0)
            {
                return;
            }       }
//此事件里面可以获取 private void dgvWebSiteOrder_CellValueChanged(object sender, DataGridViewCellEventArgs e)
        {
            List<DataGridViewRow> selectRows = new List<DataGridViewRow>();
            //点击的是第一列。
            if (e.ColumnIndex == 0)
            {
                foreach (DataGridViewRow row in this.dgvWebSiteOrder.Rows)
                {
                    if (row.Cells[this.colSelect.Name].Value != null && row.Cells[this.colSelect.Name].Value.ToString() == "1")
                    {
                        selectRows.Add(row);
                    }
                }
            }
            DgvSelectRows = selectRows;
        }

private void dataGridView1_CurrentCellDirtyStateChanged(object sender, EventArgs e)
{
if (this.dataGridView1.IsCurrentCellDirty) //有未提交的更//改
{
                this.dataGridView1.CommitEdit(DataGridViewDataErrorContexts.Commit);
 }
 }

private void dataGridView1_CellValueChanged(object sender, DataGridViewCellEventArgs e)
        {
            if (this.dataGridView1.Columns[e.ColumnIndex].Name.Equals("gender"))
            {
                DataGridViewButtonCell dgvButtonCell = this.dataGridView1.Rows[e.RowIndex].Cells["btn"] as DataGridViewButtonCell;//获得button列单元格
                DataGridViewCheckBoxCell dgvCheckBoxCell = this.dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex] as DataGridViewCheckBoxCell;//获得checkbox列单元格
                dgvButtonCell.ToolTipText = dgvCheckBoxCell.Value.ToString();//赋值
            }
        }