问如何使此代码遵循坚实的C#原则

EN

private async Task<(List<SomeModel> data1, List<string> data2)> 
                    ProcessFileAsync(IEnumerable<FileInfo> filesInDirectory)
{
    var data1 = new List<SomeModel>();
    var data2 = new List<string>();
    
    var inDirectory = filesInDirectory as FileInfo[] ?? filesInDirectory.ToArray();
    for (var lIndex = 0; lIndex < inDirectory.Count(); lIndex++)
    {
        var content = await File.ReadAllTextAsync(inDirectory.ElementAt(lIndex).FullName);

        var name = Path.GetFileNameWithoutExtension(inDirectory.ElementAt(lIndex).Name);

        var data1Task = GetData1Async(content, name);
        var data2Task = GetData2Async(content);

        await Task.WhenAll(data1Task, data2Task);

        data1.AddRange(data1Task.Result);
        data2.AddRange(data2Task.Result);
    }

    return (data1, data2);
}

private async Task<(List<SomeModel> data1, List<string> data2)> BatchProcessFilesAsync()
{
    var batchSize = 4;

    var models
        = await GetDataFromSomewhereAsync().ConfigureAwait(false);
    var listOfRequests = new List<Task<(List<SomeModel> data1, List<string> data2)>>();

    var fileModels = models.ToList();
    for (var skip = 0; skip <= fileModels.Count(); skip += batchSize)
    {
        var files = fileModels.Skip(skip).Take(batchSize);
        listOfRequests.Add(ProcessFileAsync(files));
    }

    // This will run all the calls in parallel to gain some performance
    var allFinishedTasks = await 
    Task.WhenAll(listOfRequests).ConfigureAwait(false);