Devexpress TreeList选择父级联动

/// <summary>
/// 初始化TreeList，父子节点选择关联
/// </summary>
public class TreeListInitial
{
TreeList Tree;
/// <summary>
/// 初始化TreeList，父子节点选择关联
/// </summary>
/// <param name="tree"></param>
public TreeListInitial(TreeList tree)
{
Tree = tree;
tree.BeforeCheckNode += tree_BeforeCheckNode;
tree.AfterCheckNode += tree_AfterCheckNode;
}

public bool AllowCheck = true;

public void tree_AfterCheckNode(object sender, DevExpress.XtraTreeList.NodeEventArgs e)
{
SetCheckedChildNodes(e.Node, e.Node.CheckState);
SetCheckedParentNodes(e.Node, e.Node.CheckState);
}

void tree_BeforeCheckNode(object sender, DevExpress.XtraTreeList.CheckNodeEventArgs e)
{
e.CanCheck = AllowCheck;

e.State = (e.PrevState == CheckState.Checked ? CheckState.Unchecked : CheckState.Checked);
}

public void SetNodeCheckState(TreeListNode node, CheckState checkState)
{
Tree.SetNodeCheckState(node, CheckState.Checked);
SetCheckedChildNodes(node, CheckState.Checked);
SetCheckedParentNodes(node, CheckState.Checked);
}

void SetCheckedChildNodes(TreeListNode node, CheckState check)
{
for (int i = 0; i < node.Nodes.Count; i++)
{
node.Nodes[i].CheckState = check;
SetCheckedChildNodes(node.Nodes[i], check);

}
}
void SetCheckedParentNodes(TreeListNode node, CheckState check)
{
if (node.ParentNode != null)
{
bool b = false;
CheckState state;
for (int i = 0; i < node.ParentNode.Nodes.Count; i++)
{
state = (CheckState)node.ParentNode.Nodes[i].CheckState;
if (!check.Equals(state))
{
b = !b;
break;
}
}
node.ParentNode.CheckState = b ? CheckState.Indeterminate : check;
SetCheckedParentNodes(node.ParentNode, check);
}
}

}

new TreeListInitial(tree_Module)