C#读取配置文件的方法汇总

配置文件

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
 <configsections>
  <section name="sqlconfiguration" type="configurationdemo.sqlconfiguration,configurationdemo"/>
  <section name="accountconfiguration" type="configurationdemo.accountconfiguration,configurationdemo"/>
 </configsections>
 <sqlconfiguration type="mssql" connectionstring="server=.;integrated security=sspi;database=northwind"></sqlconfiguration>
 <accountconfiguration>
  <users username="liunian" password="123456"></users>
 </accountconfiguration>
 <system.net>
  <mailsettings>
   <smtp from="[e-mail]">
    <network />
   </smtp>
  </mailsettings>
 </system.net>
</configuration>

第一种

  class sqlconfiguration : configurationsection
  {
    [configurationproperty("type", isrequired = true)]
    public string type
    {
      get { return this["type"].tostring(); }
      set { this["type"] = value; }
    }

    [configurationproperty("connectionstring", isrequired = true)]
    public string connectionstring
    {
      get { return this["connectionstring"].tostring(); }
      set { this["connectionstring"] = value; }
    }
  }

      sqlconfiguration sqlconfig = (sqlconfiguration)configurationmanager.getsection("sqlconfiguration");
      console.writeline(sqlconfig.type);
      console.writeline(sqlconfig.connectionstring);

第二种

  public class accountconfiguration : configurationsection
  {
    [configurationproperty("users", isrequired = true)]
    public accountsectionelement users
    {
      get { return (accountsectionelement)this["users"]; }
    }
  }

  public class accountsectionelement : configurationelement
  {
    [configurationproperty("username", isrequired = true)]
    public string username
    {
      get { return this["username"].tostring(); }
      set { this["username"] = value; }
    }

    [configurationproperty("password", isrequired = true)]
    public string password
    {
      get { return this["password"].tostring(); }
      set { this["password"] = value; }
    }
  }

     accountconfiguration accountconfig = (accountconfiguration)configurationmanager.getsection("accountconfiguration");
      console.writeline(accountconfig.users.username);
      console.writeline(accountconfig.users.password);

第三种

      configuration config = configurationmanager.openexeconfiguration(configurationuserlevel.none);
      smtpsection section = config.getsection("system.net/mailsettings/smtp") as smtpsection;
      console.writeline(section.from);

第四种

第五种

 configurationmanager.appsettings

第六种

 configurationmanager.connectionstrings

当然还有很多......

以上所述就是本文的全部内容了，希望大家能够喜欢。