GridControl全选和反选

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 private void btnDel_Click(object sender, EventArgs e)        {            int OKc = 0;            int NOc = 0;            List<int> selectRows;            selectRows = gridView1.GetSelectedRows().ToList();            if (selectRows.Count>0)            {                if (MessageBox.Show("您确定要删除吗？", "系统提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Question) == DialogResult.OK)                {                    foreach (int i in selectRows)                    {                        cs.CustomerID = gridView1.GetDataRow(i)["CustomerID"].ToString();                        if (cs.Delete())                        {                            OKc++;                        }                        else                        {                            NOc++;                        }                    }                }                MessageBox.Show("成功删除"+OKc+"条数据，删除失败"+NOc+"条数据！", "系统提示");                            }            else            {                MessageBox.Show("请选择数据后再进行操作！", "系统提示");            }        }

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