How can I use LINQ to filter a list in C#?

How can I use LINQ to filter a list in C#?

You can use the Where method in LINQ to filter a list. For example, if you have a list of integers and want to filter out even numbers, you can do this: var oddNumbers = numbers.Where(n => n % 2 != 0).ToList();.

Can you explain how the Where method works?

Sure! The Where method takes a predicate function as a parameter, which defines the condition that each element must satisfy to be included in the result. It returns a new collection containing only the elements that match the condition.

What if I want to filter objects in a list based on a property?

You can still use the Where method. For example, if you have a list of Person objects and want to filter by age, you can do: var adults = people.Where(p => p.Age >= 18).ToList();.

Are there any performance considerations when using LINQ?

Yes, LINQ can be less performant than traditional loops for large datasets, especially if you're chaining multiple operations. It's important to consider the size of your data and the complexity of your queries.