What is the difference between LINQ Join and Merge?

What is the difference between LINQ Join and Merge?

LINQ Join combines two sequences based on a common key, while Merge combines two sorted sequences into one.

Can you give me an example of how to use LINQ Join?

Sure! Here's a simple example: var result = from a in listA join b in listB on a.Id equals b.Id select new { a.Name, b.Description };

What about using Merge? How does that work?

Merge is typically used with sorted lists. You can use listA.Concat(listB).OrderBy(x => x.Id) to merge and sort.

Are there performance differences between them?

Yes, Join is generally faster for combining data based on keys, while Merge is efficient for sorted sequences.