I am a little confused about how I can use the date as an optional condition.
if there is a date then <= of date, if the date is null then don't filter based on date.
My code is like this

```
DateTime date= DateTime.UtcNow.AddDays(-10);

foreach (var camEvent in dbContext
   .CAM_EVENTS
   .Where(c => c.USER_ID == userID && 
               c.CAM_ID == cam.CAM_ID && 
               c.EVENT_DATE >= date)  //  I want to change this like 
   .OrderByDescending(c => c.DATE)) 
    {...}

```

I want that line to look something like this

```
(date && c.EVENT_DATE >= date) 

```

so it only filter when date is not null, but this is not working.