[WinForm][DevExpress]设置TreeList图片节点背景色

关键代码：

        /// <summary>
        /// 设置图片节点的背景色
        /// 说明：在CustomDrawNodeImages事件中使用
        /// </summary>
        /// <param name="tree">TreeList</param>
        /// <param name="e">CustomDrawNodeImagesEventArgs</param>
        /// <param name="builderBackColorHandler">委托</param>
        public static void CustomImageNodeBackColor(this TreeList tree, CustomDrawNodeImagesEventArgs e, Func<TreeListNode, Color> builderBackColorHandler)
        {
            TreeListNode _node = e.Node;
            Color _backColor = builderBackColorHandler(_node);
            e.Graphics.FillRectangle(new SolidBrush(_backColor), e.Bounds);
        }

使用代码：

        private void tlLHData_CustomDrawNodeImages(object sender, CustomDrawNodeImagesEventArgs e)
        {
            try
            {
                tlLHData.CustomImageNodeBackColor(e, node =>
                {
                    string _cabId = node.GetKeyID();
                    CCabInfo _cabInfo = LHDBHelper.GetCabInfo(_cabId);
                    if (_cabInfo != null)
                    {
                        return _cabInfo.CtuOnlineStatus == 1 ? Color.White : Color.LightGray;
                    }
                    return Color.White;
                });
            }
            catch (Exception)
            {

            }
        }

代码效果

[WinForm][DevExpress]设置TreeList图片节点背景色,布布扣,bubuko.com