Farpoint Spread 控件自带了很多类型的单元格(日期,数字,下拉列表等等),可是没有一个控件支持多选,效果如下图
为了现实以上效果,其间也想了不少办法,重绘继承单元格,最后效果都不理想,
最后,通过网上的资料,知道还有一种手段,那就是在单元格里面嵌入自定义控件,这个自定义控件还 必须继承IEmbeddedControlSupport(命名空间FarPoint.Win.Spread.DrawingSpace)接口,并实现接口方法
主要代码如下:
public partial class SpreadComboCheckBoxList : ComboCheckBoxList, IEmbeddedControlSupport { public SpreadComboCheckBoxList() { InitializeComponent(); } public void ControlPaint(Graphics g, Rectangle r, Appearance appearance, object value, bool isSelected, bool isLocked, float zoomFactor) { appearance.ShowActive = true; appearance.DrawPrimaryButton = true; g.SetClip(r, CombineMode.Intersect); } private Moving _moving = Moving.None; private Sizing _sizing = Sizing.None; private const ChildActivationPolicy Activation = ChildActivationPolicy.Click; public virtual ChildActivationPolicy ActivationPolicy { get { return Activation; } set { } } public virtual Moving CanMove { get { return _moving; } set { _moving = value; } } public virtual Sizing CanSize { get { return _sizing; } set { _sizing = value; } } }
最后在FpSpread中加入这个控件
//实例化自定义控件 var spComboCheckBox = new SpreadComboCheckBoxList { Name = cell.Row.Index + "_" + cell.Column.Index + "_" + "SpreadComboCheckBoxList" }; //将自定义控件加入指定位置的单元格 FpSpread.Sheets[0].AddControl(spComboCheckBox,cell.Row.Index, cell.Column.Index);