具有子节点的Devexpress树形结构 [英] Devexpress treelist structure with child nodes

问题描述

<pre lang="c#">

Hello

我有一个产品组的数据库表，其字段名称为父ID。例如，如果您有 Refrigerator 作为产品ID，则它具有 Kitchen Ware ID作为其父ID。我怎样才能在DevExpress中拥有一个treeList，让它的父节点下有子节点？我的数据库是SQL服务器。



我在我的表单中添加了一个有2个colomn的treeList，然后添加一个类来从sql数据库中获取数据：

Hello
I have a Database table for "Products Group" that has a field name "Parent ID". for example if you have "Refrigerator" as you Product ID, it has the "Kitchen Ware" ID as it's Parent ID. How can I have a treeList in DevExpress to have child nodes under it's parent? My database is SQL server.

I have add a treeList in my form that has 2 colomn, then add a class to fetch data from sql database :

public List<LocalProductGroups> GetProductGroups()
       {
           using (ShoppingEntities _ShoppingEntities = new ShoppingEntities())
           {
               return _ShoppingEntities.ProductGroup.Select(s => new LocalProductGroups
               {
                   GroupID=s.GroupID,
                   Name=s.Name,
                   Parent=s.Parent
               }).ToList();
           }

       }
       public partial class LocalProductGroups
       {
           public int GroupID { get; set; }
           public string Name { get; set; }
           public int Parent { get; set; }
           public bool IsRemove { get; set; }
       }

数据显示在treelist中，但不是父母和子女格式，我的意思是所有产品Goups在一个级别。



提前致谢



我尝试过：



我已根据DevExpress文档尝试了上面的代码，但我没有得到答案。

data is shown in treelist but not in parent and child format, I mean all Product Goups are in one level.

Thanks in Advance

What I have tried:

I have tried my code above based on DevExpress documentations, but I have not met my answer.

推荐答案

我发现以下内容：

如何：通过儿童实现分层数据绑定节点选择器 [ ^ ]

树列表中的树生成算法 [ ^ ]

树清单控件的功能 [ ^ ]

显示分层数据 - ASP.NET AJAX树列出演示| DevExpress [ ^ ]



如果它没有用，请回到这里，然后简要介绍一下你试图实现的目标和方法。您使用的一段代码可能会有所帮助。

I've found the following:
How to: Implement Hierarchical Data Binding via Child Nodes Selector[^]
Tree Generation Algorithm in the Tree List[^]
Tree List control's features[^]
Display Hierarchical Data - ASP.NET AJAX Tree List Demo | DevExpress[^]

If it won't help, come back here and shortly describe what have you tried to achieve and how. Piece of code you used may be helpful.

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