EF6 code-first: access to database before update database - entity-framework

Question

I'm trying to create a project with EF6.1 with code-first. All works fine I have migration is enabled, create and update DB works too. Now my Problem:
I have create a table "VersionHistory" and a CompanyInfo table.
I'm writing an "Upgrade Wizzard" for update the database. Is it possible to get data from this tables to Display Information (e.g. YourCompanyName and Update from Program Version 1.x to 1.y) before I start the database update?
Should I use classic SQLConnection for this?
Many thanks

Answer 1

You can use a SQL Connection (it can be the same of EF) or you can disable EF database structure checking.
System.Data.Entity.Database.SetInitializer<MyModel>(null);
EDIT
If you access to an entity that is not updated on the database, you can receive Ado exceptions from EF (i.e. missing columns, missing tables and so on).

Answer 2

In compliance with "bubi" I will use a SQLConnection based on my Context e.g.
using (var ctx = new AppContext()) {
ctx.Database.Connection.Open();
var cmd = ctx.Database.Connection.CreateCommand();
cmd.CommandText = "Select * From CompanyInfo";
var rdr = cmd.ExecuteReader();
var infos = (from row in rdr.Cast<System.Data.Common.DbDataRecord>()
let entityId = (int)row["EntityId"] //internal key
let entityKey = (string)row["EntityKey"] //visible key
let displayname = (string)row["DisplayName"] //company name
// some more stuff (version, etc.)
select new NOCompanyInfo {
EntityId = entityId,
EntityKey = entityKey,
DisplayName = displayname,
DBName = dbName,
...
}).ToList();
return new ObservableCollection<NOCompanyInfo>(infos);
}
Thanks