Question

这里我有一个来自我的班级Assinantes的列表

new Assinante
            {
                City= "BAURU",
                Num= 112,
                ClientCode= 3123,
                Phone= "1412345675"
            },
            new Assinante
            {
                City= "BAURU",
                Num= 45,
                ClientCode= 3123,
                Phone= "214464347"
            }

我需要按城市，ClientCod和Num分组，我已经在这里完成了：

var listGroup= (from a in lista
            group a by new {a.City, a.ClientCode, a.Num});

然后，我需要使用Linq生成一个html字符串，如下例所示：

<div>
   <h2>Bauru</h2>
   <ul>
        <li>3123</li>
        <ul>
            <li>112</li>
            <ul>
                <li>1412345675</li>
            </ul>
            <li>45</li>
            <ul>
                <li>214464347</li>
            </ul>
        </ul>
    </ul>
</div>

有人可以给我任何消化吗？

Answer 1

您可以使用linq to xml来解决此问题，也可以在示例选项中添加属性，这可能在将来有用（样式或查询）

var html =  new XElement("div", new XAttribute("class","dynamic-content"), 
                    from i in lst.GroupBy(x=>new{x.City,x.ClientCode,x.Num}) select 
                        new XElement("div",new XAttribute("class","city"),
                            new XElement("h1",new XAttribute("class","city-name"), i.Key.City ),
                            new XElement("ul",
                                from k in i.GroupBy(a=>a.ClientCode) select
                                        new XElement("li", 
                                            new XElement("h4",new XAttribute("class","client-code"), k.Key),
                                            new XElement("ul",
                                                from j in k.GroupBy(a=>a.Num) select 
                                                    new XElement("li", 
                                                        new XAttribute("class","client-num"), j.Key ,
                                                        new XElement("ul", new XAttribute("class","phone-numbers"), 
                                                            from l in j select 
                                                                new XElement("li", new XAttribute("class","phone-number"), l.Phone)
                                                    )
                                                )
                                            )
                                        )
                            )
                        )
            );

要获取实际字符串，请使用html.ToString()

请参阅小提琴here

Answer 2

您可以使用XElement生成所需的html。我想我的样本可以用Linq方法聚合重写，但由于代码更易读，我更喜欢嵌套的foreach

fiddle with demo

using System.Xml;
using System.Xml.Linq;
...
        var xml = new XElement("div");

        foreach(var city in lst.GroupBy(x=>x.City))
        {
            var cityXml = new XElement("h2", city.Key);
            var cityUl = new XElement("ul");                
            foreach(var client in city.GroupBy(c=>c.ClientCode))
            {
                var clientXml = new XElement("li", client.Key);
                var clientUl = new XElement("ul");

                foreach(var num in client.GroupBy(cl=>cl.Num))
                {
                    var numXml = new XElement("li", num.Key);
                    var numUl = new XElement("ul");                     
                    foreach(var phone in num)
                    {
                        numUl.Add(new XElement("li",phone.Phone));
                    }
                    clientUl.Add(numXml);
                    clientUl.Add(numUl);
                }                   
                cityUl.Add(clientXml);
                cityUl.Add(clientUl);
            }
            xml.Add(cityXml);
            xml.Add(cityUl);
        }

        string res = xml.ToString();

如何从group by生成html字符串

2 个答案: