How can I use LINQ with async in C#?

How can I use LINQ with async in C#?

You can use LINQ with async by utilizing the ToListAsync() method from Entity Framework or similar libraries.

Can you show me a code example?

Sure! Here's a simple example:

using (var context = new MyDbContext()) {
    var results = await context.Users.Where(u => u.IsActive).ToListAsync();
}

What if I want to use it with a custom collection?

You can use Task.Run to run LINQ queries on a custom collection asynchronously. Here's an example:

var results = await Task.Run(() => myCollection.Where(x => x.Condition).ToList());

Are there any performance considerations?

Yes, be cautious with large datasets as async LINQ can lead to increased memory usage and context switching overhead.