Unable to change foreach to LINQ syntax

In Linq some reserved word like Where, FirstOrDefault create a condition for your query and the Select reserved word can create your object that you want the Select method applies a method to elements. It is an elegant way to modify the elements in a collection such as an array. This method receives as a parameter an anonymous function—typically specified as a lambda expression.

Example: Let's look at a program where the Select extension method is applied to a string array. A local variable of array type is allocated and three string literals are used. We use Select on this array reference.

The basic method are here:

public static System.Collections.Generic.IEnumerable<TResult> Select<TSource,TResult> (this System.Collections.Generic.IEnumerable<TSource> source, Func<TSource,int,TResult> selector);

Now! for this issue that you searched for that you can use of this code:

var divNotaResult = list            .Select((data, index) => data.FindElement(By.Id("accion-1-celda-0-" + index + "-0")))            .ToList();

In Select method do like foreach we have tow object in function data and index.

The data have each data in loop, and the index have count of loop.

            var result = tableNotas            .Select((element, index) => element.FindElement(By.Id("accion-1-celda-0-" + index + "-0")))            .ToList();

Use this:

var divNota =     tablaNotas.Select((element, index) =>         element.FindElement(By.Id($"accion-1-celda-0-{index}-0")))    .ToList();