wpf中TreeView双击事件中获取当前节点、父节点以及子节点

由于工作中需要，第一次研究wpf，所以简单记录下

wpf：界面内容

<TreeView x:Name="TvDepartment" Background="Gray"
         DockPanel.Dock="Bottom" 
         MouseDoubleClick="TvDepartment_MouseDoubleClick">
</TreeView>

wpf：绑定数据供参考

                List<Department> roots = new List<Department>();
                foreach (Department department in departments)
                {
                    if (departments.Count(d => d.DepartID == department.ParentDepartID) == 0)
                    {
                        roots.Add(department);
                    }
                }

                TreeViewItem rootN = new TreeViewItem();
                rootN.Header = "部门信息";
                rootN.Tag = 0;
                TvDepartment.Items.Add(rootN);

                foreach (var root in roots)
                {
                    TreeViewItem rootNode = new TreeViewItem();
                    rootNode.Header = root.DepartName;
                    rootNode.Tag = root;

                    GetChildren(rootNode, root);
                    rootN.Items.Add(rootNode);
                }

        private void GetChildren( TreeViewItem node, Department department)
        {
            IEnumerable<Department> children = departments.Where(d => d.ParentDepartID == department.DepartID);

            foreach (Department dep in children)
            {
                TreeViewItem childNode = new TreeViewItem();
                childNode.Header = dep.DepartName;
                childNode.Tag = dep;
                GetChildren(childNode, dep);

                node.Items.Add(childNode);
            }
        }

wpf：获取节点的数据

        private void TvDepartment_MouseDoubleClick(object sender, MouseButtonEventArgs e)
        {
            //获取当前选中的节点
            var curSelect = this.TvDepartment.SelectedItem as TreeViewItem;
            if (curSelect != null)
            {
                //获取当前选中节点的父节点
                DependencyObject curSParent = curSelect.Parent; 
                if (curSParent.GetType().Name == "TreeView") //表示：顶节点
                {
                    var curSelectParent = curSParent as TreeView;
                    Department departP = (Department)curSelectParent.Tag;

                }
                else if (curSParent.GetType().Name == "TreeViewItem")//表示：除了顶节点的其它节点
                {
                    var curSelectParent = curSParent as TreeViewItem;
                    Department departP = (Department)curSelectParent.Tag;
                }

                deptIds.Clear();
                if (curSelect.Tag.ToString() != "0")
                {
                    Department depart = (Department)curSelect.Tag;
                    deptIds.Add(depart.DepartID);

                    //获取当前选中节点的子节点
                    if (curSelect.Items.Count > 0)
                    {
                        foreach (var item in curSelect.Items)
                        {
                            var curSelectSub = item as TreeViewItem;
                            Department departSub = (Department)curSelectSub.Tag;
                            deptIds.Add(departSub.DepartID);
                        }
                    }
                }
                ShowData(false);
            }
        }

标签：curSelect,节点,双击,Add,Tag,Department,wpf,TreeViewItem
来源： https://www.cnblogs.com/ggll611928/p/16207247.html