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  • .net 递归 父子表结构 生成树

     private static string RecursionMenuTree(List<Menu> menus, long parentID = 0, StringBuilder sb = null)
            {
                if (sb == null)
                {
                    sb = new StringBuilder();
                }
    
                var parentMenus = menus.Where(x => x.ParentID == parentID).ToList();
    
                parentMenus.ForEach(x =>
                 {
                     sb.Append("{");
                     sb.AppendFormat(""ID":"{0}",", x.ID.ToString());
                     sb.AppendFormat(""Path":"{0}",", x.Path);
                     sb.AppendFormat(""MenuName":"{0}",", x.MenuName);
                     sb.AppendFormat(""OrderNum":"{0}",", x.OrderNum.ToString());
                     sb.AppendFormat(""Type":"{0}"", x.Type.ToString());
                     var children = menus.Where(c => c.ParentID == x.ID);
                     if (children?.Count() > 0)
                     {
                         sb.Append(""children":[");
                         RecursionMenuTree(menus, x.ID, sb);
                         sb.Append("]");
                     }
                     sb.Append("},");
                 });
                return sb.ToString();
            }
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  • 原文地址:https://www.cnblogs.com/zengpeng/p/14740219.html
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