XDocument

XDocument学习(Winform)

  1 using System;
  2 using System.Collections.Generic;
  3 using System.ComponentModel;
  4 using System.Data;
  5 using System.Drawing;
  6 using System.Linq;
  7 using System.Text;
  8 using System.Windows.Forms;
  9 using System.Xml.Linq;
 10 
 11 namespace _01XDocument
 12 {
 13     public partial class Form1 : Form
 14     {
 15         public Form1()
 16         {
 17             InitializeComponent();
 18         }
 19         //2017-12-14 再次写一遍
 20         Dictionary<string, Person> dict = new Dictionary<string, Person>();
 21 
 22         private void Form1_Load(object sender, EventArgs e)
 23         {
 24             XDocument xDoc = XDocument.Load("ListPerson.xml");
 25             XElement root = xDoc.Root;
 26 
 27             foreach (var item in root.Elements("Person"))
 28             {
 29                 Person model = new Person();
 30                 model.Id = item.Attribute("Id").Value;
 31                 model.Name = item.Element("Name").Value;
 32                 model.Age = int.Parse(item.Element("Age").Value);
 33                 model.Email = item.Element("Email").Value;
 34 
 35                 //加载数据
 36                 dict.Add(model.Id,model);
 37                 listBox.Items.Add(model);
 38             }
 39         }
 40 
 41         private void btnAdd_Click(object sender, EventArgs e)
 42         {
 43             Person model = new Person();
 44             model.Id = txtId.Text;
 45             model.Name = txtName.Text;
 46             model.Age = int.Parse(txtAge.Text);
 47             model.Email = txtEmail.Text;
 48 
 49             if (btnAdd.Text=="修改")
 50             {
 51                 dict[model.Id] = model;
 52                 listBox.Items[listBox.SelectedIndex] = model;
 53             }
 54             else
 55             {
 56                 //增加
 57                 dict.Add(model.Id,model);
 58                 listBox.Items.Add(model);
 59             }
 60             //清除文本框的值
 61             ClearTextBox();
 62             btnAdd.Text = "添加";
 63             txtId.Enabled = true;
 64         }
 65         private void btnExit_Click(object sender, EventArgs e)
 66         {
 67             this.Close();
 68         }
 69 
 70         /// <summary>
 71         /// 清空
 72         /// </summary>
 73         private void ClearTextBox()
 74         {
 75             foreach (var item in Controls)
 76             {
 77                 if (item is TextBox)
 78                 {
 79                     ((TextBox)item).Text = string.Empty;
 80                 }
 81             }
 82         }
 83 
 84         private void Form1_FormClosing(object sender, FormClosingEventArgs e)
 85         {
 86             //关闭时候，将Dictionary中数据保存在ListPerson.xml
 87             XDocument xDoc = new XDocument();
 88             XElement root = new XElement("ListPerson");
 89             xDoc.Add(root);
 90 
 91             foreach (KeyValuePair<string,Person> item in dict)
 92             {
 93                 XElement person = new XElement("Person");
 94                 person.SetAttributeValue("Id",item.Value.Id);
 95                 person.SetElementValue("Name",item.Value.Name);
 96                 person.SetElementValue("Age",item.Value.Age);
 97                 person.SetElementValue("Email",item.Value.Email);
 98 
 99                 root.Add(person);
100             }
101             xDoc.Save("ListPerson.xml");
102         }
103         private void listBox_SelectedIndexChanged(object sender, EventArgs e)
104         {
105             Person model = listBox.SelectedItem as Person;
106             txtId.Text = model.Id;
107             txtName.Text = model.Name;
108             txtAge.Text = model.Age.ToString();
109             txtEmail.Text = model.Email;
110 
111             btnAdd.Text = "修改";
112             txtId.Enabled = false;
113         }
114 
115         /// <summary>
116         /// 构造Person类
117         /// </summary>
118         public class Person
119         {
120             public Person()
121             {
122 
123             }
124             public Person(string id, string name, int age, string email)
125             {
126                 this.Id = id;
127                 this.Name = name;
128                 this.Age = age;
129                 this.Email = email;
130             }
131             public string Id { get; set; }
132             public string Name { get; set; }
133             public int Age { get; set; }
134             public string Email { get; set; }
135             public override string ToString()
136             {
137                 //return base.ToString();
138                 return this.Name;
139             }
140         }
141 
142     }
143 }

 

posted @ 2017-12-16 12:13  森林长  阅读(656)  评论(0)  编辑  收藏  举报