实现c#, TreeView的AfterCheck事件中的检查,主要有以下情况:
1 .父节点勾选则子节点全部勾选
2 .父节点不勾选则子节点全部不勾选
3 .子节点全部不勾选则父节点不勾选
4 .子节点部分勾选则父节点不勾选
5 .子节点全部勾选则父节点被勾选
以下是递归实现 private void SetNodeCheckStatus (TreeNode tn, bool 嗯)
{
,,,,,,,if (tn ==, null)
,,,返回;
,,,//,Set child nodes check 状态
,,,foreach (, TreeNode tnChild tn.Nodes拷贝)
,,,{
,,,,,,,tnChild.Checked =,嗯;
,,,,,,,SetNodeCheckStatus (tnChild,嗯);
,,,}
,,,//,Set parent check 状态
,,,int nNodeCount =, 0;
,,,TreeNode tnParent =, tn;
,,,,(tnParent.Parent !=, null)
,,,{
,,,nNodeCount =, 0;
,,,tnParent =, tnParent.Parent;
,,,foreach (TreeNode tnTmp tnParent.Nodes拷贝)
,,,{
,,,,,,,if (tnTmp.Checked ==,嗯)
,,,,,,,{
,,,,,,,,,,,nNodeCount + +;
,,,,,,,}
,,,}
,,,if (nNodeCount ==, tnParent.Nodes.Count)
,,,,,,,tnParent.Checked =,嗯;
,,,
,,,,,,,tnParent.Checked =,假;
,,,}
}
