DevExpress Gridcontrol 表格头复选框 全选全不选

新建窗体 拖一个Gridcontrol 添加两列 col1,col2

 public partial class XtraForm2 : DevExpress.XtraEditors.XtraForm    {        public XtraForm2()        {            InitializeComponent();        }        private void XtraForm2_Load(object sender, EventArgs e)        {            //设置复选框            gridView1.OptionsSelection.MultiSelect = true;            gridView1.OptionsSelection.MultiSelectMode = DevExpress.XtraGrid.Views.Grid.GridMultiSelectMode.CheckBoxRowSelect;            //绑定数据源            List<object> list=new List<object>();            list.Add(new {col1="test",col2="test"});            list.Add(new {col1="test",col2="test"});            list.Add(new {col1="test",col2="test"});            list.Add(new {col1="test",col2="test"});            gridControl1.DataSource = list;        }    }