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="liunian@qq.com">
   <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

https://www.jb51.net/article/53615.htm

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。