6、 某节点的子节点全部选择时,该节点选择；某节点的子节点未全部选择时,该节点不选择
/// 某节点的子节点全部选择时,该节点选择 某节点的子节点未全部选择时,该节点不选择
/// <param name="node"></param>
/// <param name="check"></param>
private void SetCheckedParentNodes(TreeListNode node, CheckState check)
{
if (node.ParentNode != null)
{
CheckState parentCheckState = node.ParentNode.CheckState;
CheckState nodeCheckState;
for (int i = 0; i < node.ParentNode.Nodes.Count; i++)
{
nodeCheckState = (CheckState)node.ParentNode.Nodes[i].CheckState;
if (!check.Equals(nodeCheckState))//只要任意一个与其选中状态不一样即父节点状态不全选
{
parentCheckState = CheckState.Unchecked;
break;
}
parentCheckState = check;//否则（该节点的兄弟节点选中状态都相同），则父节点选中状态为该节点的选中状态
}
node.ParentNode.CheckState = parentCheckState;
SetCheckedParentNodes(node.ParentNode, check);//遍历上级节点
}
}
上两步写好了，别忘了上面的两个方法在TreeList_AfterCheckNode里面触发：
private void tlOffice_AfterCheckNode(object sender, DevExpress.XtraTreeList.NodeEventArgs e)
{
SetCheckedChildNodes(e.Node, e.Node.CheckState);
SetCheckedParentNodes(e.Node, e.Node.CheckState);
}
7、 获取选中的复选框数据列表
private List<int> lstCheckedOfficeID = new List<int>();//选择局ID集合
/// 获取选择状态的数据主键ID集合
/// <param name="parentNode">父级节点</param>
private void GetCheckedOfficeID(TreeListNode parentNode)
{
if (parentNode.Nodes.Count == 0)
{
return;//递归终止
}
foreach (TreeListNode node in parentNode.Nodes)
{
if (node.CheckState == CheckState.Checked)
{
DataRowView drv = tlOffice.GetDataRecordByNode(node) as DataRowView;//关键代码，就是不知道是这样获取数据而纠结了很久(鬼知道可以转换为DataRowView啊)
if (drv != null)
{
int OfficeID = (int)drv["OfficeID"];
lstCheckedOfficeID.Add(OfficeID);
}
}
GetCheckedOfficeID(node);
}
}
下面测试获取主键列表：
private void btnCheck_Click(object sender, EventArgs e)
{
this.lstCheckedOfficeID.Clear();
if (tlOffice.Nodes.Count > 0)
{
foreach (TreeListNode root in tlOffice.Nodes)
{
GetCheckedOfficeID(root);
}
}
string idStr = string.Empty;
foreach (int id in lstCheckedOfficeID)
{
idStr += id + " ";
}
MessageBox.Show(idStr);
}
