How to access index in IEnumerable object in C#?

Question

I have an IEnumerable object. I would like to access based on index for instance:

for(i=0; i<=Model.Products; i++)
{
      ???
}

Is this

Answer 1

foreach(var indexedProduct in Model.Products.Select((p, i)=> new {Product = p, Index = i})
{
   ...
   ...indexedProduct.Product...
   ...indexProduct.Index ...//this is what you need.
   ...
}