Question

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For vs Foreach loop in C#

What is the major difference between ‘for each’ and ‘for’ loops in .NET? Is there any performance gain while comparing these two? Which one gives a better performance/faster/memory management?

Answer 1

See The Code Project article foreach vs. for (C#)*.

foreach is thinking about everything as a collection and is treating them as a collection. That will also reduce the performance of the work.

To write high performance code that is not for collections, use a for loop.

Even for collections, foreach may look handy when using, but it’s not that efficient. Therefore, I strongly recommend everyone to use a for loop rather than foreach at any stage.