LINQ to Entities does not recognize the method 'System.DateTime Parse(System.String)' method

Question

I\'m a newbie to Linq and the below query keeps returning \"does not recognize System.DateTime\" error. I\'ve tried Parse and Convert and neither works. Here\'s my query:

Answer 1

It's because EF can't turn DateTime.Parse into a function available on the store. If you replace the results of the calls to DateTime.Parse() and use those variables in your query it should work fine.

var from = DateTime.Parse("10/01/2011");
var to = DateTime.Parse("04/30/2012");
var query = from c in context.tblClients
                    where (c.FirstName != null || c.LastName != null)
                       && c.EligibilityDate >= from
                       && c.EligibilityDate <= to
                      orderby c.ClientID
                    select new
                    {
                        ClientID = c.ClientID,
                        FirstName = c.FirstName,
                        LastName = c.LastName,
                        MiddleName = c.MidName,
                        SSN = c.SSN,
                        DOB = c.DOB,
                        Sex = c.Gender,
                        Ethnic = c.EthnicCode
                    };

        clientRowCnt = query.Count();