How Can I Efficiently Update Object Properties in a Collection Using LINQ?

Use LINQ to efficiently update the properties of collection objects

How to efficiently modify the properties of objects in a collection? This article will introduce a solution to this common programming problem using LINQ.

LINQ provides a concise way to update the properties of multiple objects. Consider the following scenario:

foreach (var c in collection)
{
    c.PropertyToSet = value;
}

This code iterates through the collection and sets the specified properties of each object. While it works fine, let's explore alternatives using LINQ.

With LINQ you can adopt the following syntax:

collection.Select(c => { c.PropertyToSet = value; return c; }).ToList();

Instructions:

The
• Select method creates a new sequence by performing a transformation operation on each element in the original collection.
• lambda expression c => { c.PropertyToSet = value; return c; } modifies the property and returns the updated object.
The
• ToList() method forces immediate execution of the query, ensuring that the application is updated.

This LINQ solution provides a concise and efficient way to update the properties of objects in a collection. Note that in some cases a simple ForEach loop iteration may be more appropriate, but for more complex scenarios involving transformations or filtering, LINQ provides a powerful and versatile alternative.

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