LINQでループカウンタをとる

Example.cs

using UnityEngine;
using System.Collections.Generic;
using System.Linq;

public class Example : MonoBehaviour
{
    void Start ()
    {
        List<int> list = new List<int> {
            0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
        };
        
        foreach (var row in list.Select ((value, index) => new {value, index}))
        {
            Debug.LogFormat ("index={0}, value={1}", row.index, row.value);
        }
    }
}