Question

What should I use as MetaData while I’m using Code-First Approach
via EntityConnectionStringBuilder

EntityConnectionStringBuilder entityBuilder;
entityBuilder.MetaData = ??  // Metadata = @"res://*/;";

I got this error :

{"The specified metadata path is not valid. A valid path must be either an existing directory, an existing file with extension '.csdl', '.ssdl', or '.msl', or a URI that identifies an embedded resource."}

• I didn’t make any model on this approach, As I thought it isn’t needed.

• All I want is to do everything programmatically.

• Everything was working fine in Database-First Approach.

• Here I made the Connection String and passed it to the Context.

• The EF Version is 5.0.

• The database is existed.

• Should I use any thing else to avoid MetaData Checking, such as
  initializers or ??

Answer 1

The Answer is simply this :
Instead of MetaData what is missed is the Model Mapping and it should be done here :

protected override void OnModelCreating(ModelBuilder modelBuilder)
{
  // The Mapping
}