"Getting unable to retreive metadata for " while adding a controller

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.NET

Visual-Studio

MVC3

Hi,

I am a completely new to MVC and am in first tutorial. I am getting an error while adding a controller.

The complete text of error is "Unable to retrieve metadata for "Project.Model.ModelName". Unable to find requested .Net Framework data provider. It may not be installed"

connection strings part of web.config is as follows.

<connectionStrings>

  <add name="EmpDbContext "
       connectionString="data source=.\SQLEXPRESS; Integrated Security=SSPI; AttachDBFilename=|DataDirectory|\MVCtest.sdf;
       User Instance=true" providerName="System.Data.SqlClient" />

  <add name="ApplicationServices"
       connectionString="data source=.\SQLEXPRESS;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|aspnetdb.mdf;User Instance=true"
       providerName="System.Data.SqlClient" />
</connectionStrings>

Thanks in advance!