Linq query return true or false

Question

I have a query where it should return TRUE or FALSE.

var query = from c in db.Emp
            from d in db.EmpDetails 
            where c.ID == d.ID &&         


        

Answer 1

You can use .Any() or .Count(). Any() is performing better. (Check this SO question to see why)

.Any()

var query = from c in db.Emp
            from d in db.EmpDetails 
            where c.ID == d.ID && c.FirstName == "A" && c.LastName == "D" 
          // It should return TRUE when this above statement matches all these conditions
this.result = query.Any().ToString()

.Count()

var query = from c in db.Emp
            from d in db.EmpDetails 
            where c.ID == d.ID && c.FirstName == "A" && c.LastName == "D" 
          // It should return TRUE when this above statement matches all these conditions
this.result = (query.Count() > 0).ToString()