Devexpress gridcontrol checkbox不能多选问题

绑定的字段如下

public bool Chk
        {
            set { value = _Chk; }
            get { return _Chk; }
        }
        private bool _Chk = false;

public bool Chk
        {
            get;
            set;
        }

原文：http://blog.csdn.net/zhishiheng/article/details/43275081