78 lines
2.4 KiB
C#
78 lines
2.4 KiB
C#
using System;
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using System.Drawing;
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using System.Windows.Forms;
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namespace 口罩泄露测试仪控制系统_定制款.窗体
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{
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public partial class TreeComboBox : UserControl
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{
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public TreeComboBox()
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{
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InitializeComponent();
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comboBox.DropDown += ComboBox_DropDown;
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treeView.NodeMouseClick += TreeView_NodeMouseClick;
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treeView.Visible = false; // 初始化时隐藏 treeView
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}
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private void ComboBox_DropDown(object sender, EventArgs e)
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{
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// 设置 treeView 的位置和宽度
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treeView.Location = new Point(comboBox.Left, comboBox.Bottom);
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treeView.Width = comboBox.Width; // 与 comboBox 宽度一致
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// 根据节点数量动态调整高度，最多显示 5 个节点
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treeView.Height = Math.Min(treeView.Nodes.Count * 20, 100); // 每个节点 20 像素，最大高度 100
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treeView.Visible = true;
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treeView.BringToFront();
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}
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private void TreeView_NodeMouseClick(object sender, TreeNodeMouseClickEventArgs e)
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{
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comboBox.Text = e.Node.Text;
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treeView.Visible = false; // 选择后隐藏 treeView
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}
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// 公共方法，用于添加节点
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public void AddNode(string name)
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{
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treeView.Nodes.Add(name);
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}
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// 公共方法，用于移除选中的节点
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public void RemoveSelectedNode()
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{
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if (treeView.SelectedNode != null)
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{
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treeView.Nodes.Remove(treeView.SelectedNode);
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}
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}
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// 公共属性，提供对 treeView 的访问
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public TreeView TreeViewControl => treeView;
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// 公共属性，提供对 comboBox 的访问
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public ComboBox ComboBoxControl => comboBox;
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private void btnAdd_Click(object sender, EventArgs e)
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{
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using (var inputBox = new InputBoxForm("新增项", "请输入新项名称:"))
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{
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if (inputBox.ShowDialog() == DialogResult.OK)
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{
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string newItem = inputBox.InputText;
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if (!string.IsNullOrEmpty(newItem))
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{
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AddNode(newItem);
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}
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}
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}
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}
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private void btnRemove_Click(object sender, EventArgs e)
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{
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RemoveSelectedNode();
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}
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}
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}
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