List all images from a folder to a List in Numerical order

// Create a sorted list where the key will be a string = adjusted filename, value = the original FileInfo
var sl = new System.Collections.Generic.SortedList<string, FileInfo>();
foreach (var f in file)
{
    // Get the name
    var jpgName = f.Name;
    // find the number
    var resultString = System.Text.RegularExpressions.Regex.Match(jpgName, @"\d+").Value;

    //Make sure we have a number
    int res;
    if(int.TryParse(resultString, out res))
    {
        // Convert the filename we will use as a key - you might need more zeroes if you have a lot of files
        jpgName = String.Format("{0}{1}", jpgName.Replace(resultString, ""), res.ToString("0000000"));
    }
    sl.Add(jpgName, f);
}

// Sorted list sl now contains the files in the natural sort order

List<string> Msilist = Directory.GetFiles(strImagePaths, "*.Jpeg")
                                     .Select(path => Path.GetFileNameWithoutExtension(path))
                                     .OrderBy(x => int.Parse(x.TrimStart("image".ToArray()))).ToList();