Reading Connection strings
<configuration>
<connectionStrings>
<add name ="AutoLotSqlProvider" connectionString = "Data Source=(local)\SQLEXPRESS;Integrated Security=SSPI;Initial Catalog=AutoLot"/>
<add name ="AutoLotOleDbProvider" connectionString = "Provider=SQLOLEDB;Data Source=(local)\SQLEXPRESS;Integrated Security=SSPI;Initial Catalog=AutoLot"/>
</connectionStrings>
</configuration>
string connectionString=ConfigurationManager.ConnectionStrings["AutoLotSqlProvider"].ConnectionString;