I have a business object, say a User.A User has a PhoneNumber field, which is represented by a string.I, for reasons best left to me, have created a PhoneNumber class that has implicit to/from string
I\'m using EF June CTP which has simple enum support. I have a MVC 3 view which has checkboxes that when submitted are retrieved as an array of some enum.
I get this error: System.Data.SqlClient.SqlException The DELETE statement conflicted with the REFERENCE constraint \"FK_comments_postId__164452B1\". The
I am working on a simple web application made using Entity Framework 4.1 Code First approach and MVC3.
Question: How do I get EF 4.1 to specify the ON DELETE CASCADE option on the foreign key con开发者_JAVA百科straint using the fluent api for base tables? I know how to do it with relationships to other
How can use projection to select with where clause specification? Perhap开发者_如何学编程s something like?:
I have a situation where my application constructs a dynamic LINQ query using PredicateBuilder based on user-specified filter criteria (aside: check out this link for the best EF PredicateBuilder impl
I am getting the following error when my application runs: System.InvalidOperationException: The type \'ContactModels+Contact\' was not mapped. Check that the
Error 6017: The NavigationProperty \'(propertyname)\' on the type \'(typename)\' is the source of a generated property \'(otherpropertyname)\' which conflicts with a member of the same name.
I have the following ERD and want to convert it EF 4.1 Code First classes. For the sake of simplicity, I will concentrate on the first two Entities only.
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