自定义配置文件中的节点,如下代码,在<configuration>中自定义一个节点"mySection"。
自定义配置的节点
1<?xml version="1.0"?>
2<configuration>
3 <configSections>
4 <section name="mySection" type="MyTest.PersonInfo"/>
5 <sectionGroup>
6 内容省略。。。
7 </sectionGroup>
8 </configSections>
9
10 <mySection name="龙" sex="男" age="23">
11 <contact email="longe_mail@163.com" address="厦门思明" mobile="15959595959"></contact>
12 <education school="高中" fromTime="2001" endTime="2004" number="1"></education>
13 <education school="大学" fromTime="2004" endTime="2009" number="2"></education>
14 </mySection>
15 <appSettings/>
16 <connectionStrings>
17 内容省略。。。
18 </connectionStrings>
19 <system.web>
20 内容省略。。。
21 </system.web>
22</configuration>
23
1<?xml version="1.0"?>
2<configuration>
3 <configSections>
4 <section name="mySection" type="MyTest.PersonInfo"/>
5 <sectionGroup>
6 内容省略。。。
7 </sectionGroup>
8 </configSections>
9
10 <mySection name="龙" sex="男" age="23">
11 <contact email="longe_mail@163.com" address="厦门思明" mobile="15959595959"></contact>
12 <education school="高中" fromTime="2001" endTime="2004" number="1"></education>
13 <education school="大学" fromTime="2004" endTime="2009" number="2"></education>
14 </mySection>
15 <appSettings/>
16 <connectionStrings>
17 内容省略。。。
18 </connectionStrings>
19 <system.web>
20 内容省略。。。
21 </system.web>
22</configuration>
23
创建类库项目(添加引用System.Configuration),也可以在App_Code中创建。
自定义配置文件中的节点
1using System;
2using System.Configuration;
3
4namespace MyTest
5{
6 // 继承ConfigurationSection
7 public class PersonInfo:ConfigurationSection
8 {
9 // 通过特性配置元素属性
10 // "name":属性名。
11 // IsRequired = false:属性不是必须的。
12 // 还可以配置其他的特性。
13 [ConfigurationProperty("name", IsRequired = false)]
14 public string Name
15 {
16 get { return (string)base["name"]; }
17 set { base["name"] = value; }
18 }
19
20 [ConfigurationProperty("sex", IsRequired = false)]
21 public string Sex
22 {
23 get { return (string)base["sex"]; }
24 set { base["sex"] = value; }
25 }
26
27 [ConfigurationProperty("age",IsRequired = false)]
28 public int Age
29 {
30 get { return (int)base["age"]; }
31 set { base["age"] = value; }
32 }
33
34 [ConfigurationProperty("contact", IsRequired = false)]
35 public Contact ContactInfo
36 {
37 get { return (Contact)base["contact"]; }
38 set { base["contact"] = value; }
39 }
40
41 // MSDN对IsDefaultCollection的解释:获取或设置一个值,指示此属性集合是否为经过修饰的配置属性的默认属性集合。
42 // "name"不指定,在EducationCollection中通过重写ElementName属性来指定。
43 [ConfigurationProperty("",IsDefaultCollection=true)]
44 public EducationCollection Educations // 类型是EducationCollection(继承自ConfigurationElementCollection的一个类)
45 {
46 get { return (EducationCollection)base[""]; }
47 }
48 }
49
50 // 继承ConfigurationElement,创建子元素,只能是单个节点,多个要用集合。
51 public class Contact : ConfigurationElement
52 {
53 [ConfigurationProperty("address", IsRequired = false)]
54 public string Address
55 {
56 get { return (string)base["address"]; }
57 set { base["address"] = value; }
58 }
59
60 [ConfigurationProperty("mobile", IsRequired = false)]
61 [StringValidator(MaxLength = 11)]
62 public string Mobile
63 {
64 get { return (string)base["mobile"]; }
65 set { base["mobile"] = value; }
66 }
67
68 [ConfigurationProperty("email", IsRequired = false)]
69 public string Email
70 {
71 get { return (string)base["email"]; }
72 set { base["email"] = value; }
73 }
74
75 }
76
77 // 继承ConfigurationElementCollection,该节点可以是多个。
78 public class EducationCollection:ConfigurationElementCollection
79 {
80 protected override ConfigurationElement CreateNewElement()
81 {
82 return new EducationElement();
83 }
84
85 protected override object GetElementKey(ConfigurationElement element)
86 {
87 return ((EducationElement)element).Number;
88 }
89
90 public override ConfigurationElementCollectionType CollectionType
91 {
92 get
93 {
94 return ConfigurationElementCollectionType.BasicMap;
95 }
96 }
97
98 protected override string ElementName // 多节点的节点名
99 {
100 get
101 {
102 return "education";
103 }
104 }
105
106 public EducationElement this[int index] // 索引获取节点信息
107 {
108 get { return (EducationElement)BaseGet(index); }
109 set {
110 if (BaseGet(index) != null)
111 {
112 BaseRemoveAt(index);
113 }
114 else
115 {
116 BaseAdd(index, value);
117 }
118 }
119 }
120 }
121
122
123 public class EducationElement : ConfigurationElement
124 {
125 [ConfigurationProperty("number",IsKey=true, IsRequired = false)]
126 public string Number
127 {
128 get { return (string)base["number"]; }
129 set { base["number"] = value; }
130 }
131
132 [ConfigurationProperty("school", IsRequired = false)]
133 public string School
134 {
135 get { return (string)base["school"]; }
136 set { base["school"] = value; }
137 }
138
139 [ConfigurationProperty("fromTime", IsRequired = false)]
140 public string FromTime
141 {
142 get { return (string)base["fromTime"]; }
143 set { base["fromTime"] = value; }
144 }
145
146 [ConfigurationProperty("endTime", IsRequired = false)]
147 public string EndTime
148 {
149 get { return (string)base["endTime"]; }
150 set { base["endTime"] = value; }
151 }
152 }
153}
154
1using System;
2using System.Configuration;
3
4namespace MyTest
5{
6 // 继承ConfigurationSection
7 public class PersonInfo:ConfigurationSection
8 {
9 // 通过特性配置元素属性
10 // "name":属性名。
11 // IsRequired = false:属性不是必须的。
12 // 还可以配置其他的特性。
13 [ConfigurationProperty("name", IsRequired = false)]
14 public string Name
15 {
16 get { return (string)base["name"]; }
17 set { base["name"] = value; }
18 }
19
20 [ConfigurationProperty("sex", IsRequired = false)]
21 public string Sex
22 {
23 get { return (string)base["sex"]; }
24 set { base["sex"] = value; }
25 }
26
27 [ConfigurationProperty("age",IsRequired = false)]
28 public int Age
29 {
30 get { return (int)base["age"]; }
31 set { base["age"] = value; }
32 }
33
34 [ConfigurationProperty("contact", IsRequired = false)]
35 public Contact ContactInfo
36 {
37 get { return (Contact)base["contact"]; }
38 set { base["contact"] = value; }
39 }
40
41 // MSDN对IsDefaultCollection的解释:获取或设置一个值,指示此属性集合是否为经过修饰的配置属性的默认属性集合。
42 // "name"不指定,在EducationCollection中通过重写ElementName属性来指定。
43 [ConfigurationProperty("",IsDefaultCollection=true)]
44 public EducationCollection Educations // 类型是EducationCollection(继承自ConfigurationElementCollection的一个类)
45 {
46 get { return (EducationCollection)base[""]; }
47 }
48 }
49
50 // 继承ConfigurationElement,创建子元素,只能是单个节点,多个要用集合。
51 public class Contact : ConfigurationElement
52 {
53 [ConfigurationProperty("address", IsRequired = false)]
54 public string Address
55 {
56 get { return (string)base["address"]; }
57 set { base["address"] = value; }
58 }
59
60 [ConfigurationProperty("mobile", IsRequired = false)]
61 [StringValidator(MaxLength = 11)]
62 public string Mobile
63 {
64 get { return (string)base["mobile"]; }
65 set { base["mobile"] = value; }
66 }
67
68 [ConfigurationProperty("email", IsRequired = false)]
69 public string Email
70 {
71 get { return (string)base["email"]; }
72 set { base["email"] = value; }
73 }
74
75 }
76
77 // 继承ConfigurationElementCollection,该节点可以是多个。
78 public class EducationCollection:ConfigurationElementCollection
79 {
80 protected override ConfigurationElement CreateNewElement()
81 {
82 return new EducationElement();
83 }
84
85 protected override object GetElementKey(ConfigurationElement element)
86 {
87 return ((EducationElement)element).Number;
88 }
89
90 public override ConfigurationElementCollectionType CollectionType
91 {
92 get
93 {
94 return ConfigurationElementCollectionType.BasicMap;
95 }
96 }
97
98 protected override string ElementName // 多节点的节点名
99 {
100 get
101 {
102 return "education";
103 }
104 }
105
106 public EducationElement this[int index] // 索引获取节点信息
107 {
108 get { return (EducationElement)BaseGet(index); }
109 set {
110 if (BaseGet(index) != null)
111 {
112 BaseRemoveAt(index);
113 }
114 else
115 {
116 BaseAdd(index, value);
117 }
118 }
119 }
120 }
121
122
123 public class EducationElement : ConfigurationElement
124 {
125 [ConfigurationProperty("number",IsKey=true, IsRequired = false)]
126 public string Number
127 {
128 get { return (string)base["number"]; }
129 set { base["number"] = value; }
130 }
131
132 [ConfigurationProperty("school", IsRequired = false)]
133 public string School
134 {
135 get { return (string)base["school"]; }
136 set { base["school"] = value; }
137 }
138
139 [ConfigurationProperty("fromTime", IsRequired = false)]
140 public string FromTime
141 {
142 get { return (string)base["fromTime"]; }
143 set { base["fromTime"] = value; }
144 }
145
146 [ConfigurationProperty("endTime", IsRequired = false)]
147 public string EndTime
148 {
149 get { return (string)base["endTime"]; }
150 set { base["endTime"] = value; }
151 }
152 }
153}
154
测试自定义的节点是否有效
测试自定义节点
1Configuration config = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration("/");
2
3 PersonInfo personInfo = (PersonInfo)config.GetSection("mySection");
4
5 StringBuilder infoStr = new StringBuilder();
6
7 if (personInfo != null)
8 {
9 infoStr.Append("父节点属性name的值为:");
10 infoStr.Append(personInfo.Name);
11 infoStr.Append("<br/>子节点contact的email属性值为:");
12 infoStr.Append(personInfo.ContactInfo.Email);
13 infoStr.Append("<br/>子节点第一个education的school属性值为:");
14 infoStr.Append(personInfo.Educations[0].School); // 多节点通过索引获取
15
16 Response.Write(infoStr.ToString());
17 }
18 else
19 {
20 Response.Write("Undefined!");
21 }
1Configuration config = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration("/");
2
3 PersonInfo personInfo = (PersonInfo)config.GetSection("mySection");
4
5 StringBuilder infoStr = new StringBuilder();
6
7 if (personInfo != null)
8 {
9 infoStr.Append("父节点属性name的值为:");
10 infoStr.Append(personInfo.Name);
11 infoStr.Append("<br/>子节点contact的email属性值为:");
12 infoStr.Append(personInfo.ContactInfo.Email);
13 infoStr.Append("<br/>子节点第一个education的school属性值为:");
14 infoStr.Append(personInfo.Educations[0].School); // 多节点通过索引获取
15
16 Response.Write(infoStr.ToString());
17 }
18 else
19 {
20 Response.Write("Undefined!");
21 }
测试结果
该注意的:
貌似一个节点的子节点只能有一种类型的集合,例如这个web.config的自定义节点中,education被配置成了可以设置多个节点(ConfigurationElementCollection),在该节点的同级节点中,其他节点就不能配置为多个节点了。
继承ConfigurationElementCollection的类要重写2个方法和2个属性,分别是
ConfigurationElement CreateNewElement()、
object GetElementKey(ConfigurationElement element)
ConfigurationElementCollectionType CollectionType、
string ElementName