请问ass name 和 add key 这2种连接方式有什么区别？

Question

<?xml version="1.0"?>
<configuration xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0">
<connectionStrings>
<add name="Mobile2ConnectionString" connectionString="Data Source=192.168.0.1;Initial Catalog=Mobile2;Persist Security Info=True;User ID=bile2;Password=12345" providerName="System.Data.SqlClient"/>
</connectionStrings>
<appSettings>
<add key="Connection" value="provider=SQLOLEDB;Data Source=192.168.0.1;Initial Catalog=bile2;uid=Mobile2;password=12345"/>
</appSettings>
<system.web>
<authentication mode="Forms"/>
<compilation debug="true"/></system.web>
</configuration>

Answer 1

取的方法不同
ConfigurationManager.AppSettings["Connection"]
ConfigurationManager.ConnectionStrings["Mobile2ConnectionString"].ConnectionString