Question

I have a model with a property string that can be the format “00000044” so assuming I’m querying a List of

public class Foo
{
     private string MemberNo { get; set; }
}

populated from Entity Framework,

and our set includes the following:

"00000044" include this
"44000000" include this
"20440000" exclude this

how to write a query that will exclude anything with non-zero number to the left of our search criteria “44”

Is it possible to combine Regex with linq or is there a smarter way?

Ta

Answer 1

var filteredFoos = myFoos
    .Where(foo => foo.MemberNo.TrimStart('0').StartsWith("44"));

Now this is if you want to bring back all Foos, but if you’d like to use the Entity Framework, look at this answer to translate it correctly.