Entity Framework Get Count of Dependencies

Question

I have a list of entities I want to display with a flag on each row indicating whether it is possible to delete this particular entity of not - an 'In use' sum of count of records in other tables where this entity id is referenced. > 0 means you can't delete.

Used to do it by stored proc - wondering if there's a EF / Linq way to do this?

thanks

Answer 1

Try something similar to the following:

int count = entity.DependencyEntities.Count();

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Refer to: Enumerable.Count Method

Answer 2

Something like:

if (yourEntity.RelatedEntities.Any(e => e.InUse == true))
{
    // Can't delete
} 
else
{ 
    // Can delete
}