本文主要是介绍c#DevExpress组件TreeList控件自己控制节点图标（三），希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
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);
}
}
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