Introduction:
Here I will explain how to read or get connectionstring from app.config file in c#. By using System.Configuration reference we can read or get connectionstring from app.config file in windows or console application in c#.
<connectionStrings>
<add name="dbconnection" connectionString="DataSource=KaushikDhameliya;Initial Catalog=Kaushik;Integrated Security=true" providerName="System.Data.SqlClient" />
</connectionStrings>
string admin= ConfigurationManager.ConnectionStrings["admin"].ConnectionString;