第三方控件DEV中的TreeList如何显示树形结构

最新推荐文章于 2023-07-20 10:36:34 发布

yunanzhe987

最新推荐文章于 2023-07-20 10:36:34 发布

阅读量4.4k

点赞数

分类专栏：第三方控件DEV中的TreeList 文章标签： string layer object class

本文链接：https://blog.youkuaiyun.com/yunanzhe987/article/details/7770062

版权

第三方控件DEV中的TreeList 专栏收录该内容

2 篇文章

订阅专栏

该博客介绍了如何在DEV控件中显示TreeList的树形结构。通过遍历ProductCategory对象的集合，根据ParentID判断是否为顶级节点，并使用递归方法填充子节点。代码示例展示了如何创建和更新TreeListNode节点。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

private void reflishcategory() //刷新treelist使用

{

TreeListNode node = null;

//获取ProductCategory对象的集合的方法。大家根据实际情况只要知道categorys是ProductCategory对象的集合，而ProductCategory中又包含了ProductCategory的对象！！

IList<ProductCategory > categorys = bs.CommonExecute(s => s.FindAllCategory ());

            if (treeList1.Nodes.Count != 0)
            {
                treeList1.ClearNodes();//首先清除所有的节点
            }

            foreach (var getcategory in categorys)  //使用foreach获取每一个ProductCategory集合中的对象
            {

if (getcategory.ParentID == 0)//ParentiId属性为0说明没有父节点，在获取对象集合的时候就已经得到了。

                    {
                        node = treeList1.AppendNode(new object[] { getcategory.Id, getcategory.CategoryName,getcategory .Description ,getcategory .ParentID }, -1);
                        if (getcategory.Children.Count != 0)
                        {
                            gettree(getcategory, node);//使用递归的方法。
                        }

                    }

}

        private void gettree(ProductCategory child,TreeListNode node)
        {
              TreeListNode childnode;
                foreach (var childss in child.Children)
                {

                    childnode= treeList1.AppendNode(new object[] { childss.Id, childss.CategoryName, childss.Description, childss.ParentID }, node);
                  if (childss.Children.Count != 0)
                  {

gettree(childss, childnode);
}

                }

        }

//ProductCategory对象

public partial class ProductCategory

{

#region Id

private Int32 m_id;

        /// <summary>Gets or sets Id</summary>
        public Int32 Id
        {
            get { return m_id; }
            set { m_id = value; }
        }

#endregion

#region ParentID

private Int32? m_parentID;

        /// <summary>Gets or sets ParentID</summary>
        public Int32? ParentID
        {
            get { return m_parentID; }
            set { m_parentID = value; }
        }

#endregion

#region Layer

private Int32? m_layer;

        /// <summary>Gets or sets Layer</summary>
        public Int32? Layer
        {
            get { return m_layer; }
            set { m_layer = value; }
        }

#endregion

#region CategoryName

private String m_categoryName;

        /// <summary>Gets or sets CategoryName</summary>
        public String CategoryName
        {
            get { return m_categoryName; }
            set { m_categoryName = value; }
        }

#endregion

#region Description

private String m_description;

        /// <summary>Gets or sets Description</summary>
        public String Description
        {
            get { return m_description; }
            set { m_description = value; }
        }

#endregion

#region Enabled

private Boolean? m_enabled;

        /// <summary>Gets or sets Enabled</summary>
        public Boolean? Enabled
        {
            get { return m_enabled; }
            set { m_enabled = value; }
        }

#endregion

#region CreateDate

private DateTime? m_createDate;

        /// <summary>Gets or sets CreateDate</summary>
        public DateTime? CreateDate
        {
            get { return m_createDate; }
            set { m_createDate = value; }
        }

#endregion

#region CreateUserId

private Int32? m_createUserId;

        /// <summary>Gets or sets CreateUserId</summary>
        public Int32? CreateUserId
        {
            get { return m_createUserId; }
            set { m_createUserId = value; }
        }

#endregion

#region ModifyDate

private DateTime? m_modifyDate;

        /// <summary>Gets or sets ModifyDate</summary>
        public DateTime? ModifyDate
        {
            get { return m_modifyDate; }
            set { m_modifyDate = value; }
        }

#endregion

#region ModifyUserID

private Int32? m_modifyUserID;

        /// <summary>Gets or sets ModifyUserID</summary>
        public Int32? ModifyUserID
        {
            get { return m_modifyUserID; }
            set { m_modifyUserID = value; }
        }

#endregion

        #region Parent
        private ProductCategory parent;
        public ProductCategory Parent
        {
            get { return parent; }
            set { parent = value; }
        }

#endregion

        #region Children
        private IList<ProductCategory> children = new List<ProductCategory>();
        public IList<ProductCategory> Children
        {
            get { return children; }
            set { children = value; }
        }
        #endregion
    }