LINQ: adding where clause only when a value is not null

Question

I know a typical way is like this:

IQueryable query = from staff in dataContext.Staffs;
if(name1 != null)
{
     query = from staff in query where (staff.nam         


        

Answer 1

No, I am not strongly agree with you. here you just gave a simple logic

if(name1 != null)
// do your stuff

but what will happen if you do something different with the name1 that have null value..!! Ok, now consider this situation. In this example you shows how to handle possible null values in source collections. An object collection such as an IEnumerable can contain elements whose value is null. If a source collection is null or contains an element whose value is null, and your query does not handle null values, a NullReferenceException will be thrown when you execute the query.

Probably this could be a issue...