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  • C# 构建动态树

     public class Tree
        {
            public Guid Id { get; set; }
            public string Url { get; set; }
            public Guid? ParentId { get; set; }
            public string MenuName { get; set; }
        }
            public static string GetTree(IList<Tree> treeList, Guid? parentId, string name)
            {
                string menuName = "";
                List<Tree> treeMenu = treeMenu = treeList.Where(o => o.ParentId == parentId).ToList();
    
    
                if (parentId != null)
                {
                    menuName = treeList.SingleOrDefault(o => o.Id == parentId).MenuName.ToString();
                }
                if (treeMenu.Count > 0)
                {
                    string html = (parentId == null ? "" : String.Format("<a>{0}</a>", name)) + "<ul>";
                    foreach (var item in treeMenu)
                    {
                        string tmp = GetTree(treeList, item.Id, item.MenuName);
                        html += String.Format("<li>{0}</li>", tmp);
                    }
                    html += "</ul>";
                    return html;
                }
                else
                {
                    return string.Format("<li>最子级节点:{0}</li>", menuName);
                }
            }
     List<Tree> treeList = new List<Tree> 
                {
                    new Tree{ Id=Guid.Parse("267f843a-685d-48ee-aa74-a383fd104320"),ParentId=null,MenuName="商户管理",Url="/Home"},
                    new Tree{ Id=Guid.Parse("dc8bfae4-ad6f-48ac-878b-62174d5f7ca1"),ParentId=Guid.Parse("267f843a-685d-48ee-aa74-a383fd104320"),MenuName="商户信息",Url="/User"},
                    new Tree{ Id=Guid.Parse("3f090619-ce8b-4995-8455-bbafb70f60f3"),ParentId=Guid.Parse("dc8bfae4-ad6f-48ac-878b-62174d5f7ca1"),MenuName="添加用户",Url="/User/Add"},
                      new Tree{ Id=Guid.Parse("417bbebf-35da-4c7d-9610-6598d2a2cba4"),ParentId=Guid.Parse("dc8bfae4-ad6f-48ac-878b-62174d5f7ca1"),MenuName="删除用户",Url="/User/Del"},
                       new Tree{ Id=Guid.Parse("05adfa1c-f2f8-46fc-89bb-8519be2bca62"),ParentId=Guid.Parse("dc8bfae4-ad6f-48ac-878b-62174d5f7ca1"),MenuName="查询用户",Url="/User/Sel"},
                        new Tree{ Id=Guid.Parse("66576099-947e-44f0-86dc-921827e48307"),ParentId=Guid.Parse("dc8bfae4-ad6f-48ac-878b-62174d5f7ca1"),MenuName="修改用户",Url="/User/Edit"},
                };
                Console.WriteLine(GetTree(treeList, null, ""));
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  • 原文地址:https://www.cnblogs.com/q975261413/p/5275101.html
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