CODEWITHSUNDEEP
c#
pollonz
pollonz

Reputation: 29

Check if an item exist in observable collection

I've an observable collection that is populated dynamically. I populate it through a list of items called events. There are situations where an event could be deleted from the events list, and when this happens I need to also remove it from the observable collection.

What I'm looking for is a simple and speedy way to do this. I tried the following:

 bool exist = events.Where(x => x.Home == obCollection[x].Home).Any();

but I cannot access obCollection through the x element because I need an index, and x is the actual item. I need to fix this to produce the correct elements, and afterwards I need to remove the remaining elements in the observable collection.

Upvotes: 1

Views: 8725

Answers (1)

Zein Makki
Zein Makki

Reputation: 30032

Sorry the first answer just was the other way around.

So you need to remove from ObservableCollection what was automatically removed from the events List:

var notFoundInEvents = obCollection.Where(x => !(events.Any(o => o.Home == x.Home))).ToList();

foreach (var toBeRemoved in notFoundInEvents)
{
    obCollection.Remove(toBeRemoved);
}

Upvotes: 4

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