System.OutOfMemoryException - when Entity Framework is querying a too big data of Varbinary type

Question

I\'m trying to query a varbinary column that contain a file (1,2 Gb).

I\'m using Entity Framework. See below:

Database to test

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Answer 1

It appears Entity Framework doesn't support streaming the data to a varbinary field.

You have a couple of options.

• Drop to ADO.NET for the large transfers.
• Switch your database to FileStream instead of varbinary

Edit: Assuming you're using .NET 4.5, you should use SqlDataReader.GetStream. This will allow streaming the file without having to load the whole thing into memory.