Correcting duplicate names in generic array - follow up

Follow Up question of : Correcting duplicate names in array

I have an array of file names. For example:

FileContent[] files =
{
    new FileContent() {Content = threeItems, Name = "one.zip" },
    new FileContent() {Content = fiveItems, Name = "one.zip" },
    new FileContent() {Content = sevenItems, Name = "one.zip" },
    new FileContent() {Content = threeItems, Name = "two.zip" },
    new FileContent() {Content = fiveItems, Name = "two.zip" },
    new FileContent() {Content = sevenItems, Name = "two.zip" },
};

Model:

public sealed class FileContent
{
    public byte[] Content { get; set; }

    public string Name { get; set; }
}

And I've developed the following method to correct duplicate names. What the method does is just change duplicate names. I am just adding incremented value for the next duplicated value. For example, my developed method ChangingDuplicateNames(string[] files)correct the previous array to:

FileContent[] files =
{
    new FileContent() {Content = threeItems, Name = "one.zip" },
    new FileContent() {Content = fiveItems, Name = "one(1).zip" },
    new FileContent() {Content = sevenItems, Name = "one(2).zip" },
    new FileContent() {Content = threeItems, Name = "two.zip" },
    new FileContent() {Content = fiveItems, Name = "two(1).zip" },
    new FileContent() {Content = sevenItems, Name = "two(2).zip" },
};

And implementation of ChangingDuplicateNames(FileContent[] files) is:

```
private FileContent[] ChangingDuplicateNames(FileContent[] files)
{
//Creating a dicitonary to store duplicated values. "Key" of dictionary
//is duplicated name, "Value" of dictionary is number to add for name
Dictionary duplicateNames = files.GroupBy(x => x.Name)
.Where(group => group.Count() > 1)
.ToDictionary(grouped => grouped.Key, grouped => 0);

if (duplicateNames.Count == 0)
return files;

int namesLength = files.Length;
string actualName = string.Empty;
f

Because we are dealing now with objects, we need to create a copy of each FileContent to achieve the same result like in your previous question.

Instead of having var currentFile = file where file had been a string, we now use var currentFile = new FileContent() { Content = file.Content, Name = file.Name };.

In addition, we are using the HashSet only for look up and return an IEnumerable instead of an array.

private IEnumerable ChangingDuplicateNames(FileContent[] files)
{
    var hashSet = new HashSet(StringComparer.OrdinalIgnoreCase);
    foreach (var file in files)
    {
        var currentFile = new FileContent() { Content = file.Content, Name = file.Name };
        int counter = 0;
        while (!hashSet.Add(currentFile.Name))
        {
            currentFile.Name = CreateFileName(file.Name, ref counter);
        }
        yield return currentFile;
    }
}

and call it like so

FileContent[] result = ChangingDuplicateNames(files).ToArray();

StackExchange Code Review Q#162593, answer score: 3