Supporting New DataType in Linq

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SQL-Server-2008

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I Define a new Datatype (persiandate) in my sqlserver,
and create a new table but when i use LINQ in c# 2008,
and darg table following error message appear:

one or more selected items contain a datatype that
is not supported by the designer.

How to define this new datatype for LINQ?

Posted 21-May-12 19:12pm

Hekmat90

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Sergey Alexandrovich Kryukov 22-May-12 1:50am

How about using a string type? You need to override ToString and define Parse, TryParse for your type.
--SA

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Shahin Khorshidnia · Accepted Answer · 2012-05-22T01:20:00

Solution 1

Hello

As it says the data type is not supported and no way to force it to EF.

MSDN

I prefer to use PersianDate as nvarchar in Database and Converting them to PersianDate in my C# application. (Look at SA's suggestion, he's right)

If you have any problem in converting persian date string maybe it helps: PersianDate Library that Returns value and Converts System.DateTime[^]

Posted 22-May-12 1:20am

Shahin Khorshidnia

Comments

Prasad_Kulkarni 22-May-12 7:25am

Good one +5!

Shahin Khorshidnia 22-May-12 7:50am

Thank you Prasad :)