ExeConfigurationFileMap file = new ExeConfigurationFileMap();
file.ExeConfigFilename = "test.config";
Configuration config = ConfigurationManager.OpenMappedExeConfiguration(file, ConfigurationUserLevel.None);
ConfigSectionData data = new ConfigSectionData();
data.Id = 1000;
data.Time = DateTime.Now;
config.SectionGroups.Add("group1", new ConfigurationSectionGroup());
config.SectionGroups["group1"].Sections.Add("add", data);
config.Save(ConfigurationSaveMode.Minimal);
下面就是生成的配置文件。
复制代码 代码如下:
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<configSections>
<sectionGroup type="System.Configuration.ConfigurationSectionGroup, ... >
<section type="ConsoleApplication1.ConfigSectionData, ... />
</sectionGroup>
</configSections>
<group1>
<add time="02/18/2006 22:01:02" />
</group1>
</configuration>
3. 读取配置文件
复制代码 代码如下:
ExeConfigurationFileMap file = new ExeConfigurationFileMap();
file.ExeConfigFilename = "test.config";
Configuration config = ConfigurationManager.OpenMappedExeConfiguration(file, ConfigurationUserLevel.None);
ConfigSectionData data = config.SectionGroups["group1"].Sections["add"] as ConfigSectionData;
//ConfigSectionData data = config.Sections["add"] as ConfigSectionData; // 从根节读取
if (data != null)
{
Console.WriteLine(data.Id);
Console.WriteLine(data.Time);
}
4. 写配置文件
在写入 ConfigurationSectionGroup 和 ConfigurationSection 前要判断同名配置是否已经存在，否则会写入失败。
另外如果配置文件被其他Configuration对象修改，则保存会失败，并抛出异常。建议采用Singleton模式。
复制代码 代码如下:
ExeConfigurationFileMap file = new ExeConfigurationFileMap();
file.ExeConfigFilename = "test.config";
Configuration config = ConfigurationManager.OpenMappedExeConfiguration(file, ConfigurationUserLevel.None);
ConfigSectionData data = new ConfigSectionData();
data.Id = 2000;
data.Time = DateTime.Now;
ConfigurationSectionGroup group1 = config.SectionGroups["group1"];
if (group1 == null)
config.SectionGroups.Add("group1", new ConfigurationSectionGroup());
ConfigurationSection data = group1.Sections["add"] as config;
if (add == null)
config.SectionGroups["group1"].Sections.Add("add", data);
else
{
group1.Sections.Remove("add");
group1.Sections.Add("add", data);
// 或者直接修改原配置对象，前提是类型转换要成功。
//ConfigSectionData configData = add as ConfigSectionData;
//configData.Id = data.Id;
//configData.Time = data.Time;
}
config.Save(ConfigurationSaveMode.Minimal);
5. 删除配置节
复制代码 代码如下:
删除ConfigurationSectionGroup
config.SectionGroups.Remove("group1");
//config.SectionGroups.Clear();
config.Save(ConfigurationSaveMode.Minimal);
删除ConfigurationSection
config.Sections.Remove("add1");
//config.Sections.Clear();
if (config.SectionGroups["group1"] != null)
{
config.SectionGroups["group1"].Sections.Remove("add2");
//config.SectionGroups["group1"].Sections.Clear();
}
config.Save(ConfigurationSaveMode.Minimal);
6. 其他
可以使用 ConfigurationManager.OpenMachineConfiguration() 来操作 Machine.config 文件。
或者使用 System.Web.Configuration 名字空间中的 WebConfigurationManager 类来操作 ASP.net 配置文件。
ConfigurationManager还提供了AppSettings、ConnectionStrings、GetSection()等便捷操作。
7. 使用自定义类
可以使用自定义类，不过需要定义一个转换器。
复制代码 代码如下:
using System;
using System.Collections;
using System.Collections.Generic;
using System.Configuration;
using System.Globalization;
using System.ComponentModel;
// 要写入配置文件的自定义类
class CustomData
{
public CustomData(string s)
{
this.s = s;
}
private string s;
public string S
{
get { return s; }
set { s = value; }
}
}
// 自定义的转换器(演示代码省略了类型判断)
class CustomConvert : ConfigurationConverterBase
{
public override bool CanConvertFrom(ITypeDescriptorContext ctx, Type type)
{
return (type == typeof(string));
}
public override object ConvertTo(ITypeDescriptorContext ctx, CultureInfo ci, object value, Type type)
{
return (value as CustomData).S;
}
public override object ConvertFrom(ITypeDescriptorContext ctx, CultureInfo ci, object data)
{
return new CustomData((string)data);;
}
}
class ConfigSectionData : ConfigurationSection
{
[ConfigurationProperty("id")]
public int Id
{
get { return (int)this["id"]; }
set { this["id"] = value; }
}
[ConfigurationProperty("time")]
public DateTime Time
{
get { return (DateTime)this["time"]; }
set { this["time"] = value; }
}
[ConfigurationProperty("custom")]
[TypeConverter(typeof(CustomConvert))] // 指定转换器
public CustomData Custom
{
get { return (CustomData)this["custom"]; }
set { this["custom"] = value; }
}
}
public class Program
{
static void Main(string[] args)
{
Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
ConfigSectionData data = new ConfigSectionData();
data.Id = 1000;
data.Time = DateTime.Now;
data.Custom = new CustomData("abcdefg...");
config.Sections.Add("add", data);
config.Save(ConfigurationSaveMode.Minimal);
// 读取测试
ConfigSectionData configData = (ConfigSectionData)config.Sections["add"];
Console.WriteLine(configData.Custom.S);
}
}
保存后的配置文件
复制代码 代码如下: