[Category("按钮激活")]
        [Description("增加按钮是否可见")]
        public bool TsbAddFlag
        {
            get { return tsbAddFlag; }
            set 
            {
                if (value == true)
                {
                    tsbAdd.Visible = true;
                }
                else
                {
                    tsbAdd.Visible = false;
                }
                tsbAddFlag = value; 
            }
        }在控件属性中改变true、false,控件有相应的效果,但是在程序里面写
this.toolBar1.TsbAddoneFlag = false;
this.toolBar1.TsbDeloneFlag = false;
this.toolBar1.Refresh();
就没有效果了?
要加点什么了?