C# 创建与读写配置文件

 

 

 

 

配置文件内容为

<?xml version="1.0" encoding="utf-8" ?>

<configuration>

</configuration>

在配置节点中添加connectionStrings节点

<?xml version="1.0" encoding="utf-8" ?>

<configuration>

  <!--数据库连接字符串-->

  <connectionStrings>

    <add name="ConnectionToNorthwind"

         connectionString="Data Source=localhost;Initial Catalog=数据库名;UserID=sa;password=123456"

         providerName="System.Data.SqlClient"/>

  </connectionStrings>

</configuration>