如何在c＃asp.net中动态mysql数据库连接字符串

Question

如何设置动态设置的connectionStrings，例如存储变量？

ex：string id=root;password=sample;

<connectionStrings> 
    <add name="Myconnection" connectionString="server=localhost;user id=root;password=sample;database=sample" providerName="MySql.Data.MySqlClient"/>
</connectionStrings>