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>