Database Connection problem with MVC3

I am using MVC3 with Code first approach. In this case, I had to generate my entity classes from the existing databse.

The database was

Database1.mdf

Once I did that, it created DBEntities and added a new connectionstring in my Web.config which looked something like this:

<add name="DATABASE1Entities" connectionString="metadata=res://*/Models.Task.csdl|res://*/Models.Task.ssdl|res://*/Models.Task.msl;provider=System.Data.SqlClient;provider connection string=&quot;data source=.\SQLEXPRESS;attachdbfilename=|DataDirectory|\DATABASE1.MDF;integrated security=True;user instance=True;multipleactiveresultsets=True;App=EntityFramework&quot;" providerName="System.Data.EntityClient" />

Now I remove开发者_StackOverflowd DB Entities and came up with my own DB Context class.

and

Now, I am working with the following connectionstring:

<add name="ApplicationServices" connectionString="data source=.\SQLEXPRESS;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|DATABASE1.mdf;User Instance=true" providerName="System.Data.SqlClient" />

Name of my DBcontext class is TaskContext.

I am not sure what happeend afer this. My code works. But it works on some blank database and it does not reflect anydata in database.mdf. If I add something using my controller then I see that thing is added. But it does not get reflected in Databse1.mdf.

It seeems to have created a its own databse. But I do not see andy .sdf or .mdf file created anywhere.... I am not sure what is going on?

Make the name of your connection string same as TaskContext:

<add name="TaskContext" 
    connectionString="data source=.\SQLEXPRESS;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|DATABASE1.mdf;User Instance=true" 
    providerName="System.Data.SqlClient" />

OR, you can use your favorite connectionStringName by following these steps:

1- When you are creating a TaskContext object, changes it's connectionString:

var cn = WebConfigurationManager.ConnectionStrings["ApplicationServices"].ConnectionString;
// or
var cn = WebConfigurationManager.ConnectionStrings[0].ConnectionString; // use your connection index instead of 0
var _context = new TaskContext();
_context.Database.Connection.ConnectionString = cn;

2- in your context class (TaskContext), you should tell to modelBuilder to remove IncludeMetadataConvention by this code:

protected override void OnModelCreating(DbModelBuilder modelBuilder) {
    modelBuilder.Conventions.Remove<IncludeMetadataConvention>();
    base.OnModelCreating(modelBuilder);
}

Try making the name of your connection string and DBContext the same. I believe reading at some point that EF Code First employs a lot of conventions so if it doesn't find a connection string named as the DB Context (in your case "TaskContext") it will try to connect to a SQLExpress (whether or not there is one installed) and will try to find or create the database.

I'm assuming you've got SQLExpress installed. What's down in C:\Program Files\Microsoft SQL Server\MSSQL10.SQLEXPRESS\MSSQL\DATA\? (I think that's the path) Have you got a DB sitting there for this project? Maybe something like [YourNamespace].TaskContext.dbf?