基于SqlSugar的开发框架循序渐进介绍(28)-- 快速构建系统参数管理界面

    /// <summary>
    /// 系统参数配置 应用层服务接口实现
    /// </summary>
    public class SystemParamsService : MyCrudService<SystemParamsInfo,string, SystemParamsPagedDto>, ISystemParamsService
  {
       //相关代码
  }

        /// <summary>
        /// 编写初始化窗体的实现，可以用于刷新
        /// </summary>
        public override void FormOnLoad(
        {
            InitSearchControl(;
            InitTree(;
            BindTree(;

            InitDictItem(;
            BindData(;
        }

      /// <summary>
        /// 初始化树控件
        /// </summary>
        private void InitTree(
        {
            this.tree.Columns.Clear(;

            //控件扩展函数封装处理
            this.tree.CreateColumn("CategoryName", "系统参数目录", 160, true;
            this.tree.InitTree(Id_FieldName, "PID", null, false, false;
            this.tree.OptionsDragAndDrop.DragNodesMode = DragNodesMode.Single;

            //设置树的图标集合及逐级图标
            this.tree.SelectImageList = this.imageList1;
            this.tree.CustomDrawNodeImages += (object sender, CustomDrawNodeImagesEventArgs e =>
            {
                int maxCount = this.imageList1.Images.Count;
                var index = e.Node.Level < maxCount ? e.Node.Level : 0;
                e.SelectImageIndex = index;
            };

            //初始化树节点选择事件
            this.tree.FocusedNodeChanged += delegate (object sender, FocusedNodeChangedEventArgs e
            {
                this.FocusedNodeChanged(;
            };
            this.tree.MouseDoubleClick += (s, e => { menu_EditType_Click(null, null; };
        }

/// <summary> /// 实现树节点的过滤查询 /// </summary> private void InitSearchControl( { this.searchControl1.Client = this.tree; this.tree.FilterNode += (object sender, FilterNodeEventArgs e => { if (tree.DataSource == null return; string nodeText = e.Node.GetDisplayText("CategoryName";//参数填写FieldName if (string.IsNullOrWhiteSpace(nodeText return; bool isExist = nodeText.IndexOf(searchControl1.Text, StringComparison.OrdinalIgnoreCase >= 0; if (isExist { var node = e.Node.ParentNode; while (node != null { if (!node.Visible { node.Visible = true; node = node.ParentNode; } else break; } } e.Node.Visible = isExist; e.Handled = true; }; }

/// <summary> /// 选中树节点触发的查询处理 /// </summary> private void FocusedNodeChanged( { if (this.tree.FocusedNode != null { BindData(; } } /// <summary> /// 绑定树的数据源 /// </summary> private async void BindTree( { var result = await BLLFactory<ISystemParamsDirService>.Instance.GetAllAsync(; if (result != null { this.tree.DataSource = result.Items; this.tree.ExpandAll(; } }

BLLFactory<ISystemParamsDirService>.Instance.GetAllAsync(;