如何从对象列表填充树视图

Question

我在从我的对象列表中填充树视图时遇到问题.我一直在谷歌寻找解决方案,我发现一些话题接近我的问题,但没有一个解决它.

我有一个列表,其中包含每个对象的属性:名称和组.

我想在下面填写我的树视图:

+---Group 1
|   |
|   +--------object.Name <-- 
|   +--------object.Name <-- all objects with object.Group = Group 1
|   +--------object.Name <--
|
+---Group 2
|   |
|   +--------object.Name <-- 
|   +--------object.Name <-- all objects with object.Group = Group 2
|   +--------object.Name <--
|

等等.

谢谢.

Answer 1

效果很好，谢谢。我刚刚在 else 的开头和结尾添加了几行，如下所示。

private void PopulateTreeView()
    {
        ListOfObjectsSorted = ListOfObjects.OrderBy(r => r.Group).ToList();
        var topNode = new TreeNode("Select all");
        treeView1.Nodes.Add(topNode);
        string currentGroup = ListOfObjectsSorted.First().Group;
        var treeNodes = new List<TreeNode>();
        var childNodes = new List<TreeNode>();
        foreach (Object obj in ListOfObjectsSorted )
        {
            if (currentGroup == rule.Group)
                childNodes.Add(new TreeNode(obj.Name));
            else
            {
                if (childNodes.Count > 0)
                {
                    treeNodes.Add(new TreeNode(currentGroup, childNodes.ToArray()));
                    childNodes = new List<TreeNode>();
                }
                childNodes.Add(new TreeNode(obj.Name));
                currentGroup = obj.Group;
            }
        }
        if (childNodes.Count > 0)
        {
            treeNodes.Add(new TreeNode(currentGroup, childNodes.ToArray()));
        }
        treeView1.Nodes[0].Nodes.AddRange(treeNodes.ToArray());
    }