Question

I am getting the following error when running the following query

public int getPinCount(int terminalId, ref int pinnumber)
{
         using (var dbEntities = new DatabaseAccess.Schema.BMIEntityModel())
         {
              DateTime dateNow = DateTime.Now;
              return (from pins in dbEntities.PinIds
                              where pin.TerminalID.Equals((int)terminalId) 
                              && pin.PinExpireDateTime < (DateTime)dateNow
                              select pins).Count();
         }
         return 0;
}

Unable to create a constant value of
type ‘System.Object’. Only primitive
types (‘such as Int32, String, and
Guid’) are supported in this context.

• TerminalId = int
• PinExpireDateTime = datetime

Any ideas?

Answer 1

If you’re comparing ints in: pin.TerminalID.Equals((int)terminalId) cast it before query and use ==.

Assuming that terminalId is int

pins.TerminalID == terminalId

I dont understand why are u casting dateNow to DateTime it’s not needed since it’s already DateTime.