这篇文章主要介绍了DevExpress设置TreeList图片节点背景色的方法,需要的朋友可以参考下
本文实例展示了DevExpress设置TreeList图片节点背景色的方法,在项目开发中有一定的应用价值,具体方法如下所示:
主要功能代码如下:
- /// <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);
- }
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代码使用方法如下:- 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)
- {
- }
- }
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代码运行效果如下图所示:
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