一个小问题c#

[beer888]

vb.net 中读取web.config中的
<appSettings>
<add key="ConnString" value="server=(local);UID=sa;PWD=;database=WlsUpdateService; connection reset=false; enlist=true; min pool size=2; max pool size=50"/>
</appSettings>
用这个方法实现
Public conn As New SqlConnection(ConfigurationSettings.AppSettings("connstring"))

请问在C#中怎么实现？

[EATSAHARA]

string conn = ConfigurationSettings.AppSettings["ConnectionString"];

[EATSAHARA]

SqlConnection con = new SqlConnection(conn);

[zhangaipl]

using System.Configuration;


SqlConntion conn=new SqlConnection(ConfigurationSettings.appSettings["connection"]);

[chenczx1]

程序中用
string conn = ConfigurationSettings.AppSettings["ConnectionString"];

[liduke]

ConfigurationSettings.AppSettings["ConnectionString"];