连接字符串

string SqlStr="Server=.\\SQLEXPRESS;database=db_NetStore;UId=sa;password=";

string SqlStr="Data Source=.\\SQLEXPRESS;Initial Catalog=db_NetStore;uid=as;pwd=" ;//Integrated Security=SSPI(Windows身份验证);

<configuration>

<appSettings>  

　　<add key=" ConnectionString"  value="Data Source=.\SQLEXPRESS;Initial Catalog=db_NetStore;Integrated Security=SSPI;"/>

<appSettings/>

<connectionStrings>    

　　<add name="ConnStr" connectionString="Data Source=192.168.10.10;Initial Catalog=Mono;Integrated Security=True" providerName="System.Data.SqlClient"/>

</connectionStrings>

 <connectionStrings/>

<configuration/> 

 

string Mystr=ConfigurationManager.ConnectionStrings["ConnStr"].ToString();
string Mystr=ConfigurationManager.AppSettings["ConnectionString"].ToString();