entity framework and where with like [duplicate]

Question

This question already has answers here:

Like Operator in Entity Framework? (10 answers)

Closed 8 months ago.

I' m using this instruction:

db_user = db.CBR_User.FirstOrDefault(p => p.Codice_Fiscale == code);

I want use "like" operator instead == for manage case insensitive

How can do it?

thanks

Answer 1

If you want to do an equality comparison anyway, I suggest two ways:

db_user = db.CBR_User.FirstOrDefault(p => p.Codice_Fiscale.Equals(code, StringComparison.OrdinalIgnoreCase));

Or

db_user = db.CBR_User.FirstOrDefault(p => p.Codice_Fiscale.ToUpper() == code.ToUpper());

If you don't want that, you can use StartsWith, Contains, etc, with the parameter StringComparison.OrdinalIgnoreCase.

Answer 2

You can use Contains():

db_user = db.CBR_User.FirstOrDefault(p => p.Codice_Fiscale.Contains(code));

Answer 3

I know this is an old topic, but to expand on what Kristof Claes was saying,

db_user = db.CBR_User.FirstOrDefault(p => p.Codice_Fiscale.ToUpper().Contains(code.ToUpper()));

if you use the ToUpper option, it will act as if it is a case insensitive search. You could use ToLower to do the same thing, in case you have that penchant.

Answer 4

In LINQ To Entity you have functions like StartsWith, EndsWith and Contains that you can use instead like