ef4-code-only

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EF4 CodeFirst CTP5 nvarchar(max) via attribute

开发者_JAVA百科Is there a way to create a custom attribute that will make EF CodeFirst use nvarchar(max) as datatype when assigned to a property of a poco class? I know this is possible via fluent api[详细]

2023-02-12 12:35 分类：问答
How can I map an array property to a delimited string db field using EF?

I have an object with an array property that I want to persist in the database as a delimited string.How to I Map that property to the field in the database and vice versus?[详细]

2023-02-08 13:13 分类：问答
EF4 CTP5 - HasColumnType not working

I want to override the default nvarchar(4000) for one of my string columns to a text data type in SQL Express. I use 开发者_如何转开发this code.[详细]

2023-02-07 14:09 分类：问答
how do I write this SQL in LINQ Entity Framework 4

select C.CenterID fromdbo.Center C inner join (select PersonID, max(EffectiveDate) as EffectiveDate fromCenter[详细]

2023-02-06 02:27 分类：问答
How do I split a table into multiple types in EF4 code first?

I am using code-first POCOs with EF4, CTP5. I\'ve got a table with a lot of columns in it (over 100). I want to split the table into multiple types (aka \"Table Splitting\") so that I don\'t have to f[详细]

2023-02-05 08:14 分类：问答
EF4 CTP5, mapping different entities to the same (existing) table

By code-first approach (but with an existing db schema), we are trying to map 2 different entities (Customer and Resource) to the same table. Both entities has the same keys and mapping.[详细]

2023-02-04 17:19 分类：问答
entity framework when many to many is holding data

I\'m using Entity Framework CTP5. I have a schema like this: A group contains many textdescriptions. A textdescriptions has many texts.[详细]

2023-02-04 08:34 分类：问答
Use a struct in place of a primitive for a EF4 property type

I\'ve got an EF4 entity (code-first) that includes an int bitmask. I\'ve created a Bitmask struct to make working with bitmasks easier (provides bool properties to access the bits). The bitmask struct[详细]

2023-02-03 18:50 分类：问答
ef4 map model defined function to property

I\'ve seen model defined functions used in in-code queries (queries written by the developer using Linq etc) and I\'m wondering if there\'s any way to map a model-defined function to an entity propert[详细]

2023-02-03 09:57 分类：问答
Fluent mapping verification for Entity Framework 4

Note: This is a follow-up question for this previous question of mine. Inspired by this blog post, I\'m trying to construct a fluent way to test my EF4 Code-Only mappings. However, I\'m stuck almost[详细]

2023-02-03 01:25 分类：问答