public async Task Import(IFormFile file)
{
ICollection <string> rows;
using (var reader = new StreamReader(file.OpenReadStream(), Encoding.UTF8))
{
var header = reader.ReadLine();
rows = reader.ReadToEnd().Split('\r');
}
var users = _parser.Parse(rows);
await _usersContext.AddRangeAsync(users);
await _usersContext.SaveChangesAsync();
}
