如何使用webconfig配置数据库连接字符串

<appSettings>
<add key="sqlConnectionString" value="Data Source=jason\SQLExpress;Initial catalog=vote;User ID=sa;pwd=110110"></add>
</appSettings> 如何使用webconfig配置数据库连接字符串

SqlConnection sqlcon = new SqlConnection(ConfigurationManager.AppSettings["ConnectionString"]); //读取config文件中的字符串

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