读取App.config出错?为Null值....

Question

app.config:<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <appSettings>
    <add key="ConnectionString" value="Data Source=KYLEYUAN;Initial Catalog=EIP;User ID=sa"/>
  </appSettings>
</configuration>
=================================class test 
{
static  string cnnString = System.Configuration.ConfigurationManager.AppSettings["ConnectionString"].ToString();
  
        SqlConnection cnn = new SqlConnection(cnnString); ----出错...
 
使用坚视窗口查看：发现System.Configuration.ConfigurationManager.AppSettings["ConnectionString"]=null
有添加引用：System.Configuration
请问为何会这样？

Answer 1

static  string cnnString = System.Configuration.ConfigurationManager.AppSettings["ConnectionString"].ToString();
不应该这么取连接字符串

Answer 2

VS 2003
<configuration>
    <appSettings>
<add key="data" value="Provider=SQLOLEDB;Data Source=.;User ID="";PWD="";Initial Catalog=iDocument;"></add>
    </appSettings>   
string sconn = ConfigurationSettings.AppSettings["data"];//获得连接字符串VS 2005 
<appSettings>
    <add key="data" value="Password=sa;Persist Security Info=True;User ID=sa;Initial Catalog=YinHuaXiaoShouXiTong;Data Source=."></add>
</appSettings>
string sconn = ConfigurationSettings.AppSettings["data"];//获得连接字符串

Answer 3

GaoGao911(高高) ( ) 信誉：100    Blog   加为好友  2007-04-29 15:11:20  得分: 0  
 
 
   static  string cnnString = System.Configuration.ConfigurationManager.AppSettings["ConnectionString"].ToString();
不应该这么取连接字符串
 
================================================================
那你说该怎么样取？
 

Answer 4

节点写在web.config中,
获得连接字符串在CS中