Linq - Order by number then letters

Question

I have a list of strings, and these strings contain numbers and words.

What I wanted to do is order it by the numbers (numeric order) followed by the words (alphabet

Answer 1

This solution attempts parsing once for each value.

List voltage = new List() { "1", "5", "500" , "LT", "RT", "400" };

List result = voltage
  .OrderBy(s =>
  {
    int i = 0;
    return int.TryParse(s, out i) ? i : int.MaxValue;
  })
  .ThenBy(s => s)
  .ToList();