System.ComponentModel.DataAnnotations.FileExtensionsAttribute.ValidateExtension C# (CSharp) Method

        private bool ValidateExtension(string fileName)
        {
            try
            {
                return Extensions.Split(',').Contains(Path.GetExtension(fileName).Replace(".", "").ToLowerInvariant());
            }
            catch (ArgumentException)
            {
                return false;
            }
        }