cyf
780 lines
28 KiB
C#
780 lines
28 KiB
C#
/***********************
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* 说明：主界面左菜单树
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* 创建人：龚宇超
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* 创建日期：2018-04-25
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* 修改人：
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* 修改日期：
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* 修改备注：
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* 版本：1.0.0.0
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***********************/
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Drawing;
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using System.Data;
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using System.Linq;
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using System.Text;
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using System.Windows.Forms;
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using System.Runtime.InteropServices;
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namespace Lskj.Main.Control
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{
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public partial class TreeViewCustom : UserControl
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{
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#region 公有属性
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/// <summary>
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/// 父节点字段
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/// </summary>
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public string ParentField;
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/// <summary>
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/// 显示节点文本字段
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/// </summary>
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public string TextField;
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/// <summary>
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/// 父节点关联子节点位数
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/// </summary>
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public int ParentKeyLength;
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/// <summary>
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/// 左侧菜单点击回调
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/// </summary>
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/// <param name="after">The after.</param>
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public delegate void ButtonClickEventHandler(Button after);
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/// <summary>
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/// 左侧菜单事件注册
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/// </summary>
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public ButtonClickEventHandler OnButtonClickEvent;
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/// <summary>
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/// 所有节点点击时都触发回调，默认保持原来的末级节点触发逻辑。
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/// </summary>
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public bool RaiseClickEventOnAllNodes;
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/// <summary>
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/// 默认显示所有节点。
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/// </summary>
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public bool ExpandAllNodes;
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/// <summary>
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/// 是否允许点击节点时展开/折叠子节点。
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/// </summary>
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public bool AllowNodeCollapse = true;
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/// <summary>
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/// 鼠标滑过节点时是否触发点击回调。
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/// </summary>
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public bool SwitchOnMouseMove;
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/// <summary>
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/// 使用旧版左侧菜单文字大小。
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/// </summary>
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public bool UseMenuBarTextStyle;
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/// <summary>
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/// 使用分组左侧菜单专用图片样式。
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/// </summary>
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public bool UseGroupTreeImageStyle;
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#endregion
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#region 私有属性
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/// <summary>
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/// 上次显示节点
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/// </summary>
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private string _lastTreeNode;
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/// <summary>
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/// 上次显示按钮ID
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/// </summary>
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private string _lastMenuId;
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/// 数据源
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/// </summary>
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private DataTable _dataSource;
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/// <summary>
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/// 缓存菜单，按照节点缓存
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/// </summary>
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private Dictionary<string, List<TreeNodeCustom>> _dicTreeNodes = new Dictionary<string, List<TreeNodeCustom>>();
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/// <summary>
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/// 缓存所有按钮
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/// </summary>
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private Dictionary<string, Button> _dicButtons = new Dictionary<string, Button>();
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/// <summary>
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/// 记录节点自身是否应显示，避免 Control.Visible 受父控件可见性影响。
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/// </summary>
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private HashSet<string> _visibleNodeValues = new HashSet<string>();
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/// <summary>
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/// 默认展开节点。
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/// </summary>
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private string _defaultExpandNodeValue;
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#endregion
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#region Api
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[DllImport("user32.dll")]
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public static extern int SendMessage(IntPtr hWnd, Int32 wMsg, bool wParam, Int32 lParam);
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private const int WM_SETREDRAW = 11;
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/// <summary>
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/// <para>说明：停止绘制</para>
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/// <para>创建人 龚宇超</para>
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/// <para>创建日期：2018-04-24 </para>
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/// <para>修改人：</para>
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/// <para>修改日期：</para>
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/// <para>修改备注：</para>
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/// <para>版本：1.0</para>
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/// </summary>
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/// <param name="parent"></param>
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public static void SuspendDrawing(System.Windows.Forms.Control parent)
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{
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SendMessage(parent.Handle, WM_SETREDRAW, false, 0);
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}
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/// <summary>
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/// <para>说明：开始绘制</para>
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/// <para>创建人 龚宇超</para>
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/// <para>创建日期：2018-04-24 </para>
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/// <para>修改人：</para>
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/// <para>修改日期：</para>
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/// <para>修改备注：</para>
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/// <para>版本：1.0</para>
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/// </summary>
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/// <param name="parent"></param>
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public static void ResumeDrawing(System.Windows.Forms.Control parent)
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{
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SendMessage(parent.Handle, WM_SETREDRAW, true, 0);
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parent.Refresh();
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}
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#endregion
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public TreeViewCustom()
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{
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InitializeComponent();
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this.plTreeView.Resize += (s, e) => ReflowTreeNodes();
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}
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protected override void WndProc(ref Message m)
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{
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if (m.Msg == 0x0014) return;
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base.WndProc(ref m);
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}
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/// <summary>
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/// <para>说明：检查是否包含父节点</para>
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/// <para>创建人 龚宇超</para>
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/// <para>创建日期：2018-04-24 </para>
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/// <para>修改人：</para>
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/// <para>修改日期：</para>
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/// <para>修改备注：</para>
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/// <para>版本：1.0</para>
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/// </summary>
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/// <returns></returns>
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private List<TreeNodeCustom> getParentNodes(string parent)
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{
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string parentKey = parent.Length == ParentKeyLength ? parent : parent.Substring(0, parent.Length - ParentKeyLength);
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List<TreeNodeCustom> treeNodeList = new List<TreeNodeCustom>();
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if (_dicTreeNodes == null)
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_dicTreeNodes = new Dictionary<string, List<TreeNodeCustom>>();
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if (_dicTreeNodes.ContainsKey(parentKey))
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{
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treeNodeList = _dicTreeNodes[parentKey];
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}
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else
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{
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_dicTreeNodes.Add(parentKey, treeNodeList);
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}
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return treeNodeList;
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}
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/// <summary>
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/// <para>说明：加载菜单</para>
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/// <para>创建人 龚宇超</para>
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/// <para>创建日期：2018-04-24 </para>
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/// <para>修改人：</para>
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/// <para>修改日期：</para>
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/// <para>修改备注：</para>
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/// <para>版本：1.0</para>
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/// </summary>
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public void SetDataSource(DataTable dtTable)
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{
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SetDataSource(dtTable, string.Empty);
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}
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/// <summary>
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/// 加载菜单并展开默认节点。
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/// </summary>
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public void SetDataSource(DataTable dtTable, string defaultExpandNodeValue)
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{
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int index = 1;
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this._dataSource = dtTable;
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this._lastTreeNode = null;
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this._lastMenuId = null;
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this._defaultExpandNodeValue = defaultExpandNodeValue;
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this._dicTreeNodes.Clear();
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this._dicButtons.Clear();
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this._visibleNodeValues.Clear();
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this.plTreeView.Controls.Clear();
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if (_dataSource == null || _dataSource.Rows.Count == 0) return;
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var leftItems = _dataSource.Rows.Cast<DataRow>().OrderBy(n => n[ParentField] + "");
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foreach (DataRow item in leftItems)
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{
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string nodeValue = item[ParentField] + "";
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int length = nodeValue.Length;
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TreeNodeCustom treeNode = new TreeNodeCustom();
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treeNode.Dock = DockStyle.None;
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treeNode.Anchor = AnchorStyles.Left | AnchorStyles.Top | AnchorStyles.Right;
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treeNode.Tag = nodeValue;
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treeNode.TabIndex = index;
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if (UseMenuBarTextStyle)
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{
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treeNode.Height = 44;
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}
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SetNodeDefaultStyle(treeNode.btnTreeNode, GetNodeLevel(nodeValue));
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treeNode.btnTreeNode.Name = index + "";
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treeNode.btnTreeNode.Text = item[TextField] + "";
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treeNode.btnTreeNode.Tag = item;
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treeNode.btnTreeNode.Click += new EventHandler(btnTreeNode_Click);
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treeNode.btnTreeNode.MouseMove += new MouseEventHandler(btnTreeNode_MouseMove);
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treeNode.btnTreeNode.MouseLeave += new EventHandler(btnTreeNode_MouseLeave);
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plTreeView.Controls.Add(treeNode);
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_dicButtons.Add(index + "", treeNode.btnTreeNode);
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List<TreeNodeCustom> parentNodes = getParentNodes(nodeValue);
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parentNodes.Add(treeNode);
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// 隐藏需要放在添加后，否则出现顺序错乱
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SetNodeVisibleState(treeNode, ExpandAllNodes || length == ParentKeyLength || IsDefaultExpandedChildNode(nodeValue));
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index++;
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}
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RefreshNodeStyles();
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ReflowTreeNodes();
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}
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/// <summary>
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/// 展开指定节点。
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/// </summary>
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public void ExpandNode(string nodeValue)
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{
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if (string.IsNullOrEmpty(nodeValue)) return;
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foreach (TreeNodeCustom node in plTreeView.Controls.OfType<TreeNodeCustom>())
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{
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string menuKey = node.Tag + "";
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if (menuKey.Length <= nodeValue.Length || !menuKey.StartsWith(nodeValue)) continue;
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SetNodeVisibleState(node, true);
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}
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RefreshNodeStyles();
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ReflowTreeNodes();
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}
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/// <summary>
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/// 选中指定节点，仅更新样式，不触发业务回调。
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/// </summary>
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public void SelectNode(string nodeValue)
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{
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if (string.IsNullOrEmpty(nodeValue)) return;
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TreeNodeCustom treeNode = plTreeView.Controls.OfType<TreeNodeCustom>().FirstOrDefault(n => (n.Tag + "").Equals(nodeValue));
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if (treeNode == null) return;
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SelectNodeButton(treeNode.btnTreeNode, nodeValue);
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}
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private int GetNodeLevel(string nodeValue)
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{
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if (ParentKeyLength <= 0 || string.IsNullOrEmpty(nodeValue)) return 1;
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return Math.Max(1, nodeValue.Length / ParentKeyLength);
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}
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private int GetVisualNodeLevel(string nodeValue)
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{
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return GetNodeLevel(nodeValue);
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}
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private bool IsDefaultExpandedChildNode(string nodeValue)
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{
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return !string.IsNullOrEmpty(_defaultExpandNodeValue)
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&& nodeValue.Length > _defaultExpandNodeValue.Length
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&& nodeValue.StartsWith(_defaultExpandNodeValue);
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}
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private void SetNodeVisibleState(TreeNodeCustom node, bool visible)
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{
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if (node == null) return;
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string nodeValue = node.Tag + "";
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if (visible)
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{
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_visibleNodeValues.Add(nodeValue);
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}
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else
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{
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_visibleNodeValues.Remove(nodeValue);
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}
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node.Visible = visible;
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}
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private bool GetNodeVisibleState(TreeNodeCustom node)
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{
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if (node == null) return false;
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return _visibleNodeValues.Contains(node.Tag + "");
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}
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private void RefreshNodeStyles()
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{
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foreach (TreeNodeCustom node in plTreeView.Controls.OfType<TreeNodeCustom>())
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{
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string nodeValue = node.Tag + "";
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SetNodeDefaultStyle(node.btnTreeNode, GetVisualNodeLevel(nodeValue));
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}
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if (!string.IsNullOrEmpty(_lastMenuId) && _dicButtons.ContainsKey(_lastMenuId))
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{
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Button button = _dicButtons[_lastMenuId];
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TreeNodeCustom treeNode = button.Parent as TreeNodeCustom;
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SetNodeSelectImage(button, GetVisualNodeLevel(treeNode == null ? string.Empty : treeNode.Tag + ""));
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}
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}
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private void ReflowTreeNodes()
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{
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if (plTreeView == null) return;
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int top = 0;
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int width = Math.Max(0, plTreeView.ClientSize.Width);
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var parNodes = plTreeView.Controls.OfType<TreeNodeCustom>().OrderBy(n => n.TabIndex);
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foreach (TreeNodeCustom node in parNodes)
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{
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node.Width = width;
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node.Left = 0;
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node.Top = top;
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if (!GetNodeVisibleState(node)) continue;
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top += node.Height;
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}
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plTreeView.AutoScrollMinSize = new Size(0, top);
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}
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private bool HasChildNodes(string nodeValue)
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{
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if (string.IsNullOrEmpty(nodeValue) || !_dicTreeNodes.ContainsKey(nodeValue)) return false;
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return _dicTreeNodes[nodeValue].Any(n => (n.Tag + "").Length > nodeValue.Length);
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}
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private bool HasVisibleChildNodes(string nodeValue)
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{
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if (string.IsNullOrEmpty(nodeValue) || !_dicTreeNodes.ContainsKey(nodeValue)) return false;
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return _dicTreeNodes[nodeValue].Any(n => (n.Tag + "").Length > nodeValue.Length && GetNodeVisibleState(n));
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}
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private Image GetGroupTreeDefaultImage(int nodeLevel)
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{
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if (nodeLevel <= 1) return Lskj.Main.Properties.Resources.tree_group_l1_default;
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if (nodeLevel == 2) return Lskj.Main.Properties.Resources.tree_group_l2_default;
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return Lskj.Main.Properties.Resources.tree_group_l3_default;
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}
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private Image GetGroupTreeMoveImage(int nodeLevel)
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{
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if (nodeLevel <= 1) return Lskj.Main.Properties.Resources.tree_group_l1_move;
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if (nodeLevel == 2) return Lskj.Main.Properties.Resources.tree_group_l2_move;
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return Lskj.Main.Properties.Resources.tree_group_l3_move;
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}
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private Image GetGroupTreeSelectImage(int nodeLevel)
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{
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if (nodeLevel <= 1) return Lskj.Main.Properties.Resources.tree_group_l1_select;
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if (nodeLevel == 2) return Lskj.Main.Properties.Resources.tree_group_l2_select;
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return Lskj.Main.Properties.Resources.tree_group_l3_select;
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}
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private void SetNodeDefaultStyle(Button button, int nodeLevel)
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{
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if (button == null) return;
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if (UseGroupTreeImageStyle)
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{
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button.BackgroundImage = GetGroupTreeDefaultImage(nodeLevel);
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button.BackgroundImageLayout = ImageLayout.Stretch;
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button.Image = null;
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button.TextImageRelation = TextImageRelation.Overlay;
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button.TabStop = false;
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button.FlatAppearance.BorderSize = 0;
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button.FlatAppearance.MouseDownBackColor = Color.Transparent;
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button.FlatAppearance.MouseOverBackColor = Color.Transparent;
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button.Padding = new Padding(34 + Math.Max(0, nodeLevel - 1) * 12, 0, 3, 0);
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button.Font = new Font("微软雅黑", 12);
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button.TextAlign = ContentAlignment.MiddleLeft;
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return;
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}
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if (UseMenuBarTextStyle)
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{
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button.BackgroundImage = Lskj.Main.Properties.Resources.left_default;
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button.BackgroundImageLayout = ImageLayout.Stretch;
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button.Image = null;
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button.TextImageRelation = TextImageRelation.Overlay;
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button.Font = new Font("微软雅黑", 10);
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button.Padding = new Padding(20 + Math.Max(0, nodeLevel - 1) * 20, 3, 3, 3);
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button.TextAlign = ContentAlignment.MiddleLeft;
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return;
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}
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if (nodeLevel <= 1)
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{
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button.BackgroundImage = Lskj.Main.Properties.Resources.node_default;
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button.Image = null;
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button.Padding = new Padding(10, 0, 0, 0);
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button.Font = new Font("微软雅黑", 12);
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}
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else if (nodeLevel == 2)
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{
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button.BackgroundImage = Lskj.Main.Properties.Resources.node2_default;
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button.Image = null;
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button.Padding = new Padding(20, 1, 3, 3);
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button.Font = new Font("微软雅黑", 11);
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}
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else
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{
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button.BackgroundImage = Lskj.Main.Properties.Resources.node3_default;
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button.Image = null;
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button.Padding = new Padding(30 + Math.Max(0, nodeLevel - 3) * 10, 1, 3, 3);
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button.Font = new Font("微软雅黑", 10);
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}
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}
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private void SetNodeDefaultImage(Button button, int nodeLevel)
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{
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if (button == null) return;
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if (UseGroupTreeImageStyle)
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{
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button.BackgroundImage = GetGroupTreeDefaultImage(nodeLevel);
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return;
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}
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if (UseMenuBarTextStyle)
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{
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button.BackgroundImage = Lskj.Main.Properties.Resources.left_default;
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return;
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}
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if (nodeLevel <= 1)
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{
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button.BackgroundImage = Lskj.Main.Properties.Resources.node_default;
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}
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else if (nodeLevel == 2)
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{
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button.BackgroundImage = Lskj.Main.Properties.Resources.node2_default;
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}
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else
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{
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button.BackgroundImage = Lskj.Main.Properties.Resources.node3_default;
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}
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}
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private void SetNodeSelectImage(Button button, int nodeLevel)
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{
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if (button == null) return;
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if (UseGroupTreeImageStyle)
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{
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button.BackgroundImage = GetGroupTreeSelectImage(nodeLevel);
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return;
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}
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if (UseMenuBarTextStyle)
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{
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button.BackgroundImage = Lskj.Main.Properties.Resources.left_select;
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return;
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}
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if (nodeLevel <= 1)
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{
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button.BackgroundImage = Lskj.Main.Properties.Resources.node_select;
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}
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else if (nodeLevel == 2)
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{
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button.BackgroundImage = Lskj.Main.Properties.Resources.node2_select;
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}
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else
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{
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button.BackgroundImage = Lskj.Main.Properties.Resources.node3_select;
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}
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}
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private void SetNodeMoveImage(Button button, int nodeLevel)
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{
|
|
if (button == null) return;
|
|
|
|
if (UseGroupTreeImageStyle)
|
|
{
|
|
button.BackgroundImage = GetGroupTreeMoveImage(nodeLevel);
|
|
return;
|
|
}
|
|
|
|
if (UseMenuBarTextStyle)
|
|
{
|
|
button.BackgroundImage = Lskj.Main.Properties.Resources.left_select;
|
|
return;
|
|
}
|
|
|
|
if (nodeLevel <= 1)
|
|
{
|
|
button.BackgroundImage = Lskj.Main.Properties.Resources.node_select;
|
|
}
|
|
else if (nodeLevel == 2)
|
|
{
|
|
button.BackgroundImage = Lskj.Main.Properties.Resources.node2_move;
|
|
}
|
|
else
|
|
{
|
|
button.BackgroundImage = Lskj.Main.Properties.Resources.node3_move;
|
|
}
|
|
}
|
|
|
|
private void SelectNodeButton(Button button, string nodeValue)
|
|
{
|
|
if (button == null) return;
|
|
|
|
if (!string.IsNullOrEmpty(_lastMenuId) && _lastMenuId != button.Name && _dicButtons.ContainsKey(_lastMenuId))
|
|
{
|
|
Button lastButton = _dicButtons[_lastMenuId];
|
|
TreeNodeCustom lastNode = lastButton.Parent as TreeNodeCustom;
|
|
SetNodeDefaultImage(lastButton, GetVisualNodeLevel(lastNode == null ? string.Empty : lastNode.Tag + ""));
|
|
}
|
|
|
|
SetNodeSelectImage(button, GetVisualNodeLevel(nodeValue));
|
|
_lastMenuId = button.Name;
|
|
}
|
|
|
|
private void TriggerNodeEvent(Button button, string nodeValue)
|
|
{
|
|
SelectNodeButton(button, nodeValue);
|
|
if (OnButtonClickEvent != null)
|
|
{
|
|
this.OnButtonClickEvent(button);
|
|
}
|
|
}
|
|
/// <summary>
|
|
/// <para>说明：树点击</para>
|
|
/// <para>创建人 龚宇超</para>
|
|
/// <para>创建日期：2018-04-24 </para>
|
|
/// <para>修改人：</para>
|
|
/// <para>修改日期：</para>
|
|
/// <para>修改备注：</para>
|
|
/// <para>版本：1.0</para>
|
|
/// </summary>
|
|
private void btnTreeNode_Click(object sender, EventArgs e)
|
|
{
|
|
try
|
|
{
|
|
SuspendDrawing(plTreeView);
|
|
TreeNodeCustom treeNode = (sender as Button).Parent as TreeNodeCustom;
|
|
if (treeNode != null)
|
|
{
|
|
string nodeValue = treeNode.Tag + "";
|
|
if (_lastTreeNode == null)
|
|
{
|
|
_lastTreeNode = nodeValue;
|
|
}
|
|
int nodeLevel = GetVisualNodeLevel(nodeValue);
|
|
bool hasChildNodes = HasChildNodes(nodeValue);
|
|
List<TreeNodeCustom> treeNodes = new List<TreeNodeCustom>();
|
|
// 展开当前点击节点
|
|
if (hasChildNodes && AllowNodeCollapse)
|
|
{
|
|
treeNodes = _dicTreeNodes[nodeValue];
|
|
foreach (TreeNodeCustom node in treeNodes)
|
|
{
|
|
string menuKey = node.Tag + "";
|
|
if (menuKey.Length <= nodeValue.Length) continue;
|
|
SetNodeVisibleState(node, !GetNodeVisibleState(node));
|
|
}
|
|
ReflowTreeNodes();
|
|
if (!RaiseClickEventOnAllNodes)
|
|
{
|
|
if (HasVisibleChildNodes(nodeValue))
|
|
{
|
|
SetNodeSelectImage(treeNode.btnTreeNode, nodeLevel);
|
|
}
|
|
else
|
|
{
|
|
SetNodeDefaultImage(treeNode.btnTreeNode, nodeLevel);
|
|
}
|
|
}
|
|
}
|
|
// 点击根节点隐藏所有子节点
|
|
if (AllowNodeCollapse && nodeValue.Length == ParentKeyLength && !HasVisibleChildNodes(nodeValue))
|
|
{
|
|
treeNodes = getChildNodes(nodeValue);
|
|
foreach (TreeNodeCustom node in treeNodes)
|
|
{
|
|
SetNodeVisibleState(node, false);
|
|
//Application.DoEvents();// 处理当前消息队列中的所有windows消息
|
|
}
|
|
ReflowTreeNodes();
|
|
}
|
|
// 点击末节点
|
|
if (RaiseClickEventOnAllNodes || nodeValue.Length == ParentKeyLength * 3)
|
|
{
|
|
TriggerNodeEvent(treeNode.btnTreeNode, nodeValue);
|
|
}
|
|
_lastTreeNode = nodeValue;
|
|
}
|
|
}
|
|
catch (Exception)
|
|
{
|
|
}
|
|
ResumeDrawing(plTreeView);
|
|
}
|
|
/// <summary>
|
|
/// <para>说明：鼠标移动</para>
|
|
/// <para>创建人 龚宇超</para>
|
|
/// <para>创建日期：2018-04-24 </para>
|
|
/// <para>修改人：</para>
|
|
/// <para>修改日期：</para>
|
|
/// <para>修改备注：</para>
|
|
/// <para>版本：1.0</para>
|
|
/// </summary>
|
|
private void btnTreeNode_MouseMove(object sender, MouseEventArgs e)
|
|
{
|
|
try
|
|
{
|
|
Button button = sender as Button;
|
|
if (button != null)
|
|
{
|
|
this.Cursor = Cursors.Hand;
|
|
|
|
TreeNodeCustom treeNode = button.Parent as TreeNodeCustom;
|
|
string treeNodeTag = treeNode.Tag + "";
|
|
int nodeLevel = GetVisualNodeLevel(treeNodeTag);
|
|
if (SwitchOnMouseMove && button.Name != _lastMenuId)
|
|
{
|
|
TriggerNodeEvent(button, treeNodeTag);
|
|
if (!UseGroupTreeImageStyle)
|
|
{
|
|
SetNodeMoveImage(button, nodeLevel);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (button.Name == _lastMenuId)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (UseGroupTreeImageStyle)
|
|
{
|
|
SetNodeMoveImage(button, nodeLevel);
|
|
return;
|
|
}
|
|
|
|
if (nodeLevel == 2)
|
|
{
|
|
// 第一级节点
|
|
if (HasChildNodes(treeNodeTag))
|
|
{
|
|
button.BackgroundImage = HasVisibleChildNodes(treeNodeTag) ? Lskj.Main.Properties.Resources.node2_select : Lskj.Main.Properties.Resources.node2_move;
|
|
}
|
|
else
|
|
{
|
|
button.BackgroundImage = Lskj.Main.Properties.Resources.node2_move;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// 末节点
|
|
SetNodeMoveImage(button, nodeLevel);
|
|
}
|
|
|
|
}
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
}
|
|
}
|
|
/// <summary>
|
|
/// <para>说明：鼠标离开</para>
|
|
/// <para>创建人 龚宇超</para>
|
|
/// <para>创建日期：2018-04-24 </para>
|
|
/// <para>修改人：</para>
|
|
/// <para>修改日期：</para>
|
|
/// <para>修改备注：</para>
|
|
/// <para>版本：1.0</para>
|
|
/// </summary>
|
|
private void btnTreeNode_MouseLeave(object sender, EventArgs e)
|
|
{
|
|
try
|
|
{
|
|
Button button = sender as Button;
|
|
if (button != null)
|
|
{
|
|
this.Cursor = Cursors.Hand;
|
|
|
|
TreeNodeCustom treeNode = button.Parent as TreeNodeCustom;
|
|
string treeNodeTag = treeNode.Tag + "";
|
|
int nodeLevel = GetVisualNodeLevel(treeNodeTag);
|
|
if (button.Name == _lastMenuId)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (UseGroupTreeImageStyle)
|
|
{
|
|
SetNodeDefaultImage(button, nodeLevel);
|
|
return;
|
|
}
|
|
|
|
if (nodeLevel == 2)
|
|
{
|
|
// 第一级节点
|
|
if (HasChildNodes(treeNodeTag))
|
|
{
|
|
button.BackgroundImage = HasVisibleChildNodes(treeNodeTag) ? Lskj.Main.Properties.Resources.node2_select : Lskj.Main.Properties.Resources.node2_default;
|
|
}
|
|
else
|
|
{
|
|
button.BackgroundImage = Lskj.Main.Properties.Resources.node2_default;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// 末节点
|
|
SetNodeDefaultImage(button, nodeLevel);
|
|
}
|
|
|
|
}
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
}
|
|
}
|
|
/// <summary>
|
|
/// <para>说明：获取子节点</para>
|
|
/// <para>创建人 龚宇超</para>
|
|
/// <para>创建日期：2018-04-24 </para>
|
|
/// <para>修改人：</para>
|
|
/// <para>修改日期：</para>
|
|
/// <para>修改备注：</para>
|
|
/// <para>版本：1.0</para>
|
|
/// </summary>
|
|
/// <returns></returns>
|
|
private List<TreeNodeCustom> getChildNodes(string nodeValue)
|
|
{
|
|
List<TreeNodeCustom> treeNodes = new List<TreeNodeCustom>();
|
|
|
|
// 获取第3个节点之后的节点
|
|
DataRow[] rowChilds = _dataSource.Rows.Cast<DataRow>().Where(x => (x[ParentField] + "").Length == nodeValue.Length * 2 && (x[ParentField] + "").Substring(0, nodeValue.Length) == nodeValue).ToArray();
|
|
|
|
foreach (DataRow item in rowChilds)
|
|
{
|
|
if (_dicTreeNodes.ContainsKey(item[ParentField] + ""))
|
|
{
|
|
List<TreeNodeCustom> nodeChilds = _dicTreeNodes[item[ParentField] + ""];
|
|
foreach (TreeNodeCustom node in nodeChilds)
|
|
{
|
|
treeNodes.Add(node);
|
|
}
|
|
}
|
|
}
|
|
return treeNodes;
|
|
}
|
|
}
|
|
|
|
}
|