How Can I Update Multiple Objects in a Collection Using LINQ?

Efficiently Updating Multiple Objects in a Collection via LINQ

LINQ provides an elegant solution for updating multiple objects within a collection. The following approach leverages Select and ToList for concise and efficient updates:

<code class="language-csharp">collection.Select(c => { c.PropertyToSet = value; return c; }).ToList();</code>

This code iterates through each object (c) in the collection. Inside the lambda expression, the PropertyToSet property of each object is updated to the specified value. Crucially, ToList() forces immediate evaluation of the Select operation, ensuring the changes are reflected in the original collection.

This method offers a streamlined alternative to traditional foreach loops, particularly beneficial when maintaining business logic within the application layer, independent of database interactions. It allows for bulk updates of a specific property across all collection members with minimal code.

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