entity-framework-4.1

Having this simple code I get "Cannot drop database "test_db" because it is currently in use" (CleanUp method) as I run it. [TestFixture] public class ClientRepositoryTest { private const string CONNECTION_STRING = "Data Source=.;Initial Catalog=test_db;Trusted_Connection=True"; private DataContext _dataCntx; [SetUp] public void Init() { Database.SetInitializer(new DropCreateDatabaseAlways<DataContext>()); _dataCntx = new DataContext(CONNECTION_STRING); _dataCntx.Database.Initialize(true); } [TearDown] public void CleanUp() { _dataCntx.Dispose(); Database.Delete(CONNECTION_STRING); } }

I know this question has been asked numerous times before as I’ve read quite a few posts on the topic about the pros and cons etc but I still can’t decide which approach is right for me. I’m very new to web programming and come from a SQL DB Admin / report writing background. I’ve decided to try build my own website which may end up having 30 -40 tables maybe more in the future. I’ve looked at both approaches and I do favour Entity Model approach only because I like simplicity of the designer and I like seeing the whole model in front me, it shows the overall picture in one snapshot. Also, me

What is the difference in behavior of [MaxLength] and [StringLength] attributes? As far as I can tell (with the exception that [MaxLength] can validate the maximum length of an array) these are identical and somewhat redundant? MaxLength is used for the Entity Framework to decide how large to make a string value field when it creates the database. From MSDN: Specifies the maximum length of array or string data allowed in a property. StringLength is a data annotation that will be used for validation of user input. From MSDN: Specifies the minimum and maximum length of characters that are

I have the situation where I'm initializing my model in DatabaseInitializer() for EF 4.1 and get this annoying error "Validation failed for one or more entities. See 'EntityValidationErrors' property for more details." So, I go to this EntityValidationErrors and there is a field {System.Data.Entity.Validation.DbEntityValidationResult} which gives me no information at all about what field it was unable to initialize. Is there a way to get more info about this error? To clear things out: I know how to fix the string length problem. What I'm asking is how do I get the exact field name that is

I am trying to implement an AuditLog using EF 4.1, by overriding the SaveChanges() method as discussed in the following places: http://jmdority.wordpress.com/2011/07/20/using-entity-framework-4-1-dbcontext-change-tracking-for-audit-logging/ Entity Framework 4.1 DbContext Override SaveChanges to Audit Property Change I am having problems with the "modified" entries though. Whenever I attempt to get at the OriginalValue of the property in question, it always has the same value as it does in the CurrentValue field. I first use this code, and it successfully identifies the Entries that are

I have Table1 with the following relationships (they are not enforced they only create the relationship for the navigation properties) Table1 (*)->(1) Table2 Table1 (*)->(1) Table3 Table1 (*)->(1) Table4 Table1 (*)->(1) Table5 Using eager loading code looks like IQueryable<Table1> query = context.Table1s; query = query.Include(Table1 => Table1.Table2); query = query.Include(Table1 => Table1.Table3); query = query.Include(Table1 => Table1.Table4); query = query.Include(Table1 => Table1.Table5); query = query.Where(row => row.Table1Id == table1Id); query.Single(); Every way I try to organize the