Iâ€™m using the .NET entity framework and Iâ€™ve got one entity containing a varbinary. Is there an easy way to get the size of the varbinary in the codebehind, efter itâ€™s been retrieved from the database?
Iâ€™m thinking there might be some way to get the size directly from the entity, something like entity.Context.Size â€“ or do one need to handle it differently?
varbinary translates to a
byte field in Entity Framework, which means you can check the Length property of the array:
int fieldSize = entity.MyVarBinaryField.Length;
As mentioned by tster: In a LINQ to Entities query, you can call the DataLength method of the SqlFunctions class, which will translate into a DATALENGTH function call in the generated SQL statement. This only works with SQL Server and Entity Framework 4 or later:
int? fieldSize = repository.Entity .Select(e => SqlFunctions.DataLength(e.MyVarBinaryField)).Single();
I know this question is old, but EF now supports this by using