保存集合属性到App.config

怎样在App.config文件中，自定义节点保存如下格式的内容：

 1 <? xml version="1.0" encoding="utf-8"  ?>
 2      < configuration >
 3          < configSections >
 4              < section  name ="TestSection"  type ="Test.TestSection,TestService, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null"   />
 5    </ configSections >
 6          < TestSection  name ="test"  password ="******" >
 7     < channels >
 8      < add  id ="one"  name ="channel_1"   />
 9      < add  id ="two"  name ="channel_2"   />
10      < add  id ="three"  name ="channel_3"   />
11     </ channels >
12    </ TestSection >
13 </ configuration >

1、元素要继承ConfigurationElement

 1 using  System;
 2 using  System.Collections.Generic;
 3 using  System.Text;
 4 using  System.Configuration;
 5 using  System.Xml;
 6 namespace  Test
 7 {
 8    /**//// <summary>
 9    /// 通道
10    /// </summary>
11    public class Channel : ConfigurationElement
12    {
13
14        public Channel() 
15        {
16
17        }
18        public Channel(string name) : this(Guid.NewGuid().ToString(),name)
19        {
20        }
21        public Channel(string id ,string name)
22        {
23            ID = id;
24            Name = name;
25        }
26
27        /**//// <summary>
28        /// 通道编号
29        /// </summary>
30        [ConfigurationProperty("id",IsRequired=true)]
31        public string ID
32        {
33            get { return (string) this["id"]; }
34            set { this["id"] = value; }
35        }
36
37        /**//// <summary>
38        /// 通道名称
39        /// </summary>
40        [ConfigurationProperty("name",IsRequired=true)]
41        public string Name
42        {
43            get { return (string) this["name"]; }
44            set { this["name"] = value; }
45        }
46
47        protected override void DeserializeElement(XmlReader reader, bool serializeCollectionKey)
48        {
49            base.DeserializeElement(reader, serializeCollectionKey);
50        }
51        protected override bool SerializeElement(XmlWriter writer, bool serializeCollectionKey)
52        {
53            return  base.SerializeElement(writer, serializeCollectionKey);
54        }
55
56        protected override bool IsModified()
57        {
58           return   base.IsModified();
59        }
60    }
61}
62

2、集合要继承ConfigurationElementCollection

  1 using  System;
  2 using  System.Collections.Generic;
  3 using  System.Text;
  4 using  System.Configuration;
  5 namespace  Test
  6 {
  7         public class ChannelCollection : ConfigurationElementCollection
  8        {
  9            public ChannelCollection()
 10            {
 11                Channel channel = (Channel)CreateNewElement();
 12                Add(channel);
 13            }
 14
 15            public override ConfigurationElementCollectionType CollectionType
 16            {
 17                get
 18                {
 19                    return ConfigurationElementCollectionType.AddRemoveClearMap;
 20                }
 21            }
 22
 23            protected override ConfigurationElement CreateNewElement()
 24            {
 25                return new Channel();
 26            }
 27
 28
 29            protected override ConfigurationElement CreateNewElement(string elementName)
 30            {
 31                return new Channel(elementName);
 32            }
 33
 34
 35            protected override Object GetElementKey(ConfigurationElement element)
 36            {
 37                return ((Channel)element).Name;
 38            }
 39
 40
 41            public new string AddElementName
 42            {
 43                get
 44                { return base.AddElementName; }
 45
 46                set
 47                { base.AddElementName = value; }
 48
 49            }
 50
 51            public new string ClearElementName
 52            {
 53                get
 54                { return base.ClearElementName; }
 55
 56                set
 57                { base.AddElementName = value; }
 58
 59            }
 60
 61            public new string RemoveElementName
 62            {
 63                get
 64                { return base.RemoveElementName; }
 65
 66
 67            }
 68
 69            public new int Count
 70            {
 71
 72                get { return base.Count; }
 73
 74            }
 75
 76
 77            public Channel this[int index]
 78            {
 79                get
 80                {
 81                    return (Channel)BaseGet(index);
 82                }
 83                set
 84                {
 85                    if (BaseGet(index) != null)
 86                    {
 87                        BaseRemoveAt(index);
 88                    }
 89                    BaseAdd(index, value);
 90                }
 91            }
 92
 93            new public Channel this[string Name]
 94            {
 95                get
 96                {
 97                    return (Channel)BaseGet(Name);
 98                }
 99            }
100
101            public int IndexOf(Channel channel)
102            {
103                return BaseIndexOf(channel);
104            }
105
106            public void Add(Channel channel)
107            {
108                BaseAdd(channel);
109
110                // Add custom code here.
111            }
112
113            protected override void
114                BaseAdd(ConfigurationElement element)
115            {
116                BaseAdd(element, false);
117                // Add custom code here.
118            }
119
120            public void Remove(Channel channel)
121            {
122                if (BaseIndexOf(channel) >= 0)
123                    BaseRemove(channel.Name);
124            }
125
126            public void RemoveAt(int index)
127            {
128                BaseRemoveAt(index);
129            }
130
131            public void Remove(string name)
132            {
133                BaseRemove(name);
134            }
135
136            public void Clear()
137            {
138                BaseClear();
139                // Add custom code here.
140            }
141        }
142}

3、节点要继承ConfigurationSection

 1 using  System;
 2 using  System.Collections.Generic;
 3 using  System.Text;
 4 using  System.Configuration;
 5 using  System.Xml;
 6
 7 namespace  Test
 8 {
 9    /**//// <summary>
10    /// Test配置信息
11    /// </summary>
12    public class TestSection : ConfigurationSection 
13    {
14        /**//// <summary>
15        /// Test名称
16        /// </summary>
17        [ConfigurationProperty("name",IsRequired=true)]
18        public string Name
19        {
20            get { return (string) this["name"]; }
21            set { this["name"] = value; }
22        }
23        
24        /**//// <summary>
25        /// Test通道集合
26        /// </summary>
27        [ConfigurationProperty("channels",IsDefaultCollection = false)]
28        public ChannelCollection Channels
29        {
30            get 
31            {
32                ChannelCollection channels = (ChannelCollection)base["channels"];
33                return channels; 
34            
35            }
36   
37        }
38
39        /**//// <summary>
40        /// 密码
41        /// </summary>
42        [ConfigurationProperty("password",IsRequired= true)]
43        public string Password
44        {
45            get { return (string) this["password"]; }
46            set { this["password"] = value; }
47        }
48
49         protected override void DeserializeSection(XmlReader reader)
50        {
51            base.DeserializeSection(reader);
52        }
53
54        protected override string SerializeSection(ConfigurationElement parentElement, string name, ConfigurationSaveMode saveMode)
55        {
56            string s = base.SerializeSection(parentElement, name, saveMode);
57            return s;
58        }
59    }
60}
61

4、Demo

 1 using  System;
 2 using  System.Collections.Generic;
 3 using  System.ComponentModel;
 4 using  System.Data;
 5 using  System.Drawing;
 6 using  System.Text;
 7 using  System.Windows.Forms;
 8 using  System.Configuration;
 9
10 namespace  Test
11 {
12    public partial class Demo : Form
13    {
14        public Demo()
15        {
16            InitializeComponent();
17        }
18
19        private void button1_Click(object sender, EventArgs e)
20        {
21            SaveConfig();
22        }
23        public void SaveConfig()
24        {
25            Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
26
27            Channel[] channel = {      new Channel("one","channel_Red"),
28                                        new Channel("two","channel_Blue"),
29                                        new Channel("three","channel_Green")
30                                 };
31
32            config.Sections.Remove("ClientSection");
33
34            ClientSection section = new ClientSection();
35            section.Name = "服务器1";
36            section.Password = "123456";
37            for (int i = 0; i < channel.Length; i++)
38            {
39                section.Channels.Add(channel[i]);
40            }
41            config.Sections.Add("ClientSection", section);
42            config.Save();
43        }
44    }
45}