No connection string named 'SMSEntities' could be found .

Question

Hi frnds...

 

i have configured a wpf application and make BAL and DAl and WpfApp three project in my solutions . I have Added Entity Framework in DAL and class file in BAl. when i am going to run the application it shows the error "No connection string named 'SMSEntities' could be found in the application config file."

there is a app.config file in my DAL.

 

When i get this error then i have added an app.config file in  WpfApp project also, And add the connection string in that file. But still i am getting the same error when i am going to insert the record in database 

 

DAL(App.config content)

 

<?xml version="1.0" encoding="utf-8"?>

<configuration>

<configSections>

<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->

<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=4.4.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />

</configSections>

<connectionStrings>

<add name="SMSEntities" connectionString="metadata=res://*/SchoolEntity.csdl|res://*/SchoolEntity.ssdl|res://*/SchoolEntity.msl;provider=System.Data.SqlClient;provider connection string=&quot;data source=TIWARI-PC\SQLEXPRESS;initial catalog=SMS;user id=sa;password=00;MultipleActiveResultSets=True;App=EntityFramework&quot;" providerName="System.Data.EntityClient" />

</connectionStrings>

<entityFramework>

<defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" />

</entityFramework>

</configuration>

 

Please help me out...