Untitled

// saveuserdetail
                                    using (System.Drawing.Image img = System.Drawing.Image.FromStream(ms))
                                    {
                                        var valid = ValidateImageFile(img, fileExtension);
                                        if (valid == false)
                                        {
                                            throw new FormatException();
                                        }
                                    }

//

        private bool ValidateImageFile(System.Drawing.Image img, string ext)
        {
            if (img.RawFormat != ImageFormat.Png && ext == "png" || img.RawFormat != ImageFormat.Jpeg && (ext == "jpg" || ext == "jpeg" || ext == "pjpeg" || ext == "pjp"))
            {
                return false;
            }

            return true;
        }