如何在没有路径的情况下直接将文件转换为字节数组（不保存文件）

Here is my code:

这是我的代码：

 public async Task<IActionResult> Index(ICollection<IFormFile> files)
    {
        foreach (var file in files)
            uploaddb(file);   
        var uploads = Path.Combine(_environment.WebRootPath, "uploads");
        foreach (var file in files)
        {
            if (file.Length > 0)
            {
                var fileName = ContentDispositionHeaderValue.Parse(file.ContentDisposition).FileName.Trim('"');

                await file.SaveAsAsync(Path.Combine(uploads, fileName));
}
 public async Task