3步在config文件中建立自定义section

自定义config的作用主要是增强config的可读性，容易管理，直接进入正题

先来比较一下

使用AppSettings:

使用custom section:

下面是创建过程

Step1 建立自定义class

using System;
using System.Configuration;
public class BlogSettings : ConfigurationSection
{
    private static BlogSettings settings
      = ConfigurationManager.GetSection("BlogSettings") as BlogSettings;
    public static BlogSettings Settings
    {
        get
        {
            return settings;
        }
    }
    [ConfigurationProperty("frontPagePostCount"
      , DefaultValue = 20
      , IsRequired = false)]
    [IntegerValidator(MinValue = 1
      , MaxValue = 100)]
    public int FrontPagePostCount
    {
        get { return (int)this["frontPagePostCount"]; }
        set { this["frontPagePostCount"] = value; }
    }

    [ConfigurationProperty("title"
      , IsRequired = true)]
    [StringValidator(InvalidCharacters = "  ~!@#$%^&*()[]{}/;’\"|\\"
      , MinLength = 1
      , MaxLength = 256)]
    public string Title
    {
        get { return (string)this["title"]; }
        set { this["title"] = value; }
    }
}

注意其中的BlogSettings不是必须的

Step2 在app.config或者web.config里面注册新的section

下面这段xml代码不知道为啥用了syntaxhighlighter贴上就乱码

<configuration>
  <configSections>
    <section name="BlogSettings" type="Fully.Qualified.TypeName.BlogSettings, AssemblyName" />
  </configSections>
  <BlogSettings
    frontPagePostCount="10"
    title="You’ve Been Haacked" />
</configuration>

Step3 享受你的成果

string title = BlogSettings.Settings.Title;
Response.Write(title); //it works!!!

如果想打破沙锅问到底的话，请参考：Unraveling the Mysteries of .NET 2.0 Configuration

代码出处：http://haacked.com/archive/2007/03/12/custom-configuration-sections-in-3-easy-steps.aspx