标签:des winform style class blog code
关键代码:
///
/// 节点互斥同步
/// 说明
/// eg:
///TreeListNode _node = e.Node;
///_node.SyncMutexNodeCheckState(_node.CheckState, n => n.GetNodeType() == NodeType.Cab);
///
/// 需要互斥同步的节点
/// 节点状态
/// 互斥条件【委托】
public static void SyncMutexNodeCheckState(this TreeListNode node, CheckState checkState, Predicate checkHanlder)
{
TreeList _tree = node.TreeList;
if (checkHanlder(node))//当前节点符合互斥条件时候
{
_tree.DownRecursiveTree(n => n.CheckState = CheckState.Unchecked);
}
else
{
TreeListNode _curParentNode = node.GetParentNode(checkHanlder);//获取符合互斥条件的父节点
if (_curParentNode == null) return;
TreeListNode _thePubleNode = node.GetPublicParentNode(checkHanlder);//获取符合互斥条件的公共父节点
if (_thePubleNode == null) return;
foreach (TreeListNode n in _thePubleNode.Nodes)
{
foreach (TreeListNode nc in n.Nodes)
{
if (nc != _curParentNode)
{
nc.CheckState = CheckState.Unchecked;
nc.DownRecursiveNode(nr => nr.CheckState = CheckState.Unchecked);
}
}
}
}
node.SyncNodeCheckState(checkState);
node.CheckState = checkState;
}
}
///
/// 向上递归,获取符合条件的节点的公共父节点
///
/// 操作节点
/// 委托
/// 符合条件的节点
public static TreeListNode GetPublicParentNode(this TreeListNode node, Predicate checkHanlder)
{
TreeListNode _publicPNode = null;
TreeListNode _findNode = node.GetParentNode(checkHanlder);//先获取到条件判断的自身父节点
if (_findNode != null)
{
//开始向上递归
UpwardRecursiveNode(_findNode, n =>
{
TreeListNode _curpublicNode = n.ParentNode;//获取当前向上递归的父节点
if (_curpublicNode != null)
{
if (_curpublicNode.Nodes.Count > 1)//若有多个子节点,则是公共父节点
{
_publicPNode = _curpublicNode;
return false;//跳出递归
}
}
return true;//继续递归
});
}
return _publicPNode;
}
///
/// 向上递归,获取符合条件的父节点
///
/// 需要向上递归的节点
/// 判断条件【委托】
/// 符合条件的节点【TreeListNode】
public static TreeListNode GetParentNode(this TreeListNode node, Predicate conditionHanlder)
{
TreeListNode _parentNode = node.ParentNode;//获取上一级父节点
TreeListNode _conditonNode = null;
if (_parentNode != null)
{
if (conditionHanlder(_parentNode))//判断上一级父节点是否符合要求
{
_conditonNode = _parentNode;
}
if (_conditonNode == null)//若没有找到符合要求的节点,递归继续
_conditonNode = GetParentNode(_parentNode, conditionHanlder);
}
return _conditonNode;
}
SyncNodeCheckState代码参考:http://www.cnblogs.com/Yan-Zhiwei/p/3808089.html
说明:
如图,Test3和蒙自路Test2都是"cab"类型;
当调用代码如下:
TreeListNode _node = e.Node;
_node.SyncMutexNodeCheckState(_node.CheckState, n => n.GetNodeType() == NodeType.Cab);
实现的效果就是要么只能勾选“Test3”或者“蒙自路Test2”节点或者子节点,不同同时勾选,应该就是互斥的意思;也是这段代码想实现的效果,希望有所帮助。
[WinForm][DevExpress][TreeList]节点互斥,搜素材,soscw.com
[WinForm][DevExpress][TreeList]节点互斥
标签:des winform style class blog code
原文地址:http://www.cnblogs.com/Yan-Zhiwei/p/3808108.html