How do you get the index of the current iteration of a foreach loop?

Question

Is there some rare language construct I haven\'t encountered (like the few I\'ve learned recently, some on Stack Overflow) in C# to get a value representing the current iter

Answer 1

Using LINQ, C# 7, and the System.ValueTuple NuGet package, you can do this:

foreach (var (value, index) in collection.Select((v, i)=>(v, i))) {
    Console.WriteLine(value + " is at index " + index);
}

You can use the regular foreach construct and be able to access the value and index directly, not as a member of an object, and keeps both fields only in the scope of the loop. For these reasons, I believe this is the best solution if you are able to use C# 7 and System.ValueTuple.