ReportingServicesBatchUpload.ReportingServicesUploader.GetMimeTypeFromFileName C# (CSharp) Method

        private string GetMimeTypeFromFileName(string resourceName)
        {
            string extension = resourceName.Substring(resourceName.Length - 3);
            switch (extension) {
                case "bmp":
                    return "image/bmp";
                case "png":
                    return "image/x-png";
                case "jpg":
                default:
                    throw new NotSupportedException(string.Format("Extension {0} not supported"));
            }
        }