// 选中的节点、焦点
var selectedNode = new List<object>();
var selectedNodeFocus = new List<object>();

treeListUnit.GetNodeList().FindAll(n => n.Expanded).ForEach(n => { selectedNode.Add(n.GetValue("UNIT_CODE")); });

if (isFocus)
treeListUnit.GetNodeList().FindAll(n => n.Focused).ForEach(n => { selectedNodeFocus.Add(n.GetValue("UNIT_CODE")); });

// 刷新数据
ShowMedInstData();

// 展开节点
selectedNode.ForEach(id => { treeListUnit.FindNodeByKeyID(id).Expanded = true; });

if (isFocus)
selectedNodeFocus.ForEach(id => { treeListUnit.SetFocusedNode(treeListUnit.FindNodeByKeyID(id)); });

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