c#DevExpress组件TreeList控件自己控制节点图标（三）

来源：互联网发布：荣威ei6 知乎编辑：程序博客网时间：2024/06/05 18:16

上面为绑定图片显示信息，以下为改变选择时候修改复选框状态：

        /// <summary>        /// 设置单位树改变复选框状态        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>                private void treeListJgsyCommon_MouseDown(object sender, MouseEventArgs e)        {            if (e.Button == MouseButtons.Left)            {                TreeListHitInfo hitInfo = treeListJgsyCommon.CalcHitInfo(new Point(e.X, e.Y));                if (hitInfo.HitInfoType == HitInfoType.StateImage && btnExportData.Enabled)                {                    TreeListNode currTreeNode = hitInfo.Node;                    switch ((TreeNodeCheckImage)currTreeNode.StateImageIndex)                    {                        case TreeNodeCheckImage.CheckedBranch:                            currTreeNode.StateImageIndex = (int)TreeNodeCheckImage.UnCheckedBranch;                            break;                        case TreeNodeCheckImage.UnCheckedBranch:                            currTreeNode.StateImageIndex = (int)TreeNodeCheckImage.CheckedBranch;                            break;                    }                }            }        }

最终判断选择状态情况，如下：

/// <summary>        /// 获取被选中的机构事业树        /// </summary>        List<JGSYTree> listJgsyTree = null;                  /// <summary>        /// 导出上报数据        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        private void btnExportData_Click(object sender, EventArgs e)        {            listJgsyTree = new List<JGSYTree>();            foreach (TreeListNode node in treeListJgsyCommon.Nodes)            {                if (node.StateImageIndex == (int)TreeNodeCheckImage.CheckedBranch)                    listJgsyTree.Add(treeListJgsyCommon.GetDataRecordByNode(node) as JGSYTree);                if (node.HasChildren)                    GetExportJgsy(node);                            }            if (listJgsyTree.Count == 0)            {                MessageBoxShow.Info("未选中导出数据的单位!");                return;            }                        BackgroundWorker bgWorker = new BackgroundWorker();            bgWorker.DoWork += new DoWorkEventHandler((sender1, e1) =>            {                InvokeSetControlEnable(false);                                string tempDBPath=string.Empty;                //导出数据成功后用户将数据保存到本地                if (StartExportData(listJgsyTree,out tempDBPath))                {                    SaveFileDialog saveFileDiaglog = new SaveFileDialog();                    saveFileDiaglog.RestoreDirectory=true;                    FileInfo file=new FileInfo(tempDBPath);                    saveFileDiaglog.FileName=file.Name.Replace(".mdb","");                    if (saveFileDiaglog.ShowDialog() == DialogResult.OK)                    {                        File.Copy(tempDBPath, saveFileDiaglog.FileName.Replace(".mdb", ""), true);                                            }                    File.Delete(tempDBPath);                }                InvokeSetControlEnable(true);            });            bgWorker.RunWorkerAsync();        }        /// <summary>        /// 获取选中的导出单位        /// </summary>        /// <param name="treeNode"></param>        void GetExportJgsy(TreeListNode treeNode)        {            foreach (TreeListNode node in treeNode.Nodes)            {                if (node.StateImageIndex == (int)TreeNodeCheckImage.CheckedBranch)                    listJgsyTree.Add(treeListJgsyCommon.GetDataRecordByNode(node) as JGSYTree);                if (node.HasChildren)                    GetExportJgsy(node);            }        }