App.Config

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <connectionStrings>
    
  <add name="SampleEntities" connectionString="metadata=res://*/SampleModel.csdl|res://*/SampleModel.ssdl|res://*/SampleModel.msl;provider=System.Data.SqlClient;provider connection string=&quot;Data Source=ONDER-PC\SQLEXPRESS;Initial Catalog=MvcEntityDB;Integrated Security=True;MultipleActiveResultSets=True&quot;" providerName="System.Data.EntityClient" /></connectionStrings>
</configuration>