定义字符串连接key

 

<?xmlversion="1.0"encoding="utf-8"?>

<configuration>

<appSettings>

        <!--此处设置数据库连接字符串-->

    <addkey="ConnectionString"

value="server=(local);database=hotop100;User ID=sa;password=123"/>

 </appSettings>

 <system.web>

    <globalization

            requestEncoding="utf-8"

           responseEncoding="utf-8"    />

</system.web>

</configuration>

使用时

string connstr=ConfigurationSettings.AppSettings("ConnectionString");