写得比较啰嗦，自己记载备用
1 public class XmlFunction
2 {
3 private static XDocument _doc = new XDocument();
4 public static string FilePath = "mydata.xml";
5 public XmlFunction()
6 {
7 _doc = XDocument.Load(FilePath);
8 }
9 public XmlFunction(string filepath)
10 : this()
11 {
12 FilePath = filepath;
13 }
14
15 public static List<DataModel> ReadAll()
16 {
17 var list = new List<DataModel>();
18 var xmllist = _doc.Descendants("datas").Elements("Jijin");
19 foreach (var element in xmllist)
20 {
21 var dataModel = new DataModel();
22 var xElement1 = element.Element("daima");
23 if (xElement1 != null)
24 dataModel.Daima = xElement1.Value == "" ? "" : xElement1.Value;
25 var xElement2 = element.Element("Chicangliang");
26 if (xElement2 != null)
27 dataModel.Chicangliang = xElement2.Value == "" ? "" : xElement2.Value;
28 var xElement3 = element.Element("Mairujia");
29 if (xElement3 != null)
30 dataModel.Mairujia = xElement3.Value == "" ? "" : xElement3.Value;
31 list.Add(dataModel);
32 }
33 return list;
34 }
35
36 public DataModel Readone(string daima)
37 {
38 var selectItem = _doc.Descendants("Jijin").FirstOrDefault(p =>
39 {
40 var element = p.Element("daima");
41 return element != null && element.Value == daima;
42 });
43 var model = new DataModel();
44 if (selectItem == null) return model;
45 model.Daima = daima;
46 var chicangliang = "";
47 var mairujia = "";
48 var sichicangliang = selectItem.Element("Chicangliang");
49 var simairujia = selectItem.Element("Mairujia");
50 if (sichicangliang != null)
51 {
52 if (!string.IsNullOrEmpty(sichicangliang.Value))
53 chicangliang = sichicangliang.Value;
54 }
55 if (simairujia != null)
56 {
57 if (!string.IsNullOrEmpty(simairujia.Value))
58 mairujia = simairujia.Value;
59 }
60 model.Chicangliang = chicangliang;
61 model.Mairujia = mairujia;
62 return model;
63 }
64
65 public static bool Insert(DataModel model)
66 {
67 var db = new XElement("Jijin",
68 new XElement("daima", model.Daima),
69 new XElement("Chicangliang", model.Chicangliang),
70 new XElement("Mairujia", model.Mairujia)
71 );
72 var element = _doc.Element("datas");
73 if (element == null) return false;
74 element.Add(db);
75 _doc.Save(FilePath);
76 return true;
77 }
78
79 public static bool Delete(string path, string node, string daima)
80 {
81 var selectItem = _doc.Descendants("Jijin").FirstOrDefault(p =>
82 {
83 var element = p.Element("daima");
84 return element != null && element.Value == daima;
85 });
86 if (selectItem == null) return false;
87 selectItem.Remove();
88 _doc.Save(FilePath);
89 return true;
90 }
91
92 public static bool Modify(DataModel model)
93 {
94 var selectItem = _doc.Descendants("datas").Elements("Jijin")
95 .FirstOrDefault(p =>
96 {
97 var element = p.Element("daima");
98 return element != null && element.Value == model.Daima;
99 });
if (selectItem == null) return false;
var element1 = selectItem.Element("daima");
if (element1 != null) element1.Value = model.Daima;
var element2 = selectItem.Element("Chicangliang");
if (element2 != null) element2.Value = model.Chicangliang;
var element3 = selectItem.Element("Mairujia");
if (element3 != null) element3.Value = model.Mairujia;
_doc.Save(FilePath);
return true;
}
}