private void BtnUploadFileClick(object sender, EventArgs e)
{
var dirName = string.Format("/{0}/{1}", DateTime.Now.ToString("yyyy"), DateTime.Now.ToString("MM"));
var dir = BlogService.GetDirectory(dirName);
var file = BlogService.UploadFile(txtUploadFile.PostedFile.InputStream, txtUploadFile.PostedFile.FileName, dir, true);
txtContent.Text += string.Format("<p><a href=\"{0}\">{1}</a></p>", file.FileDownloadPath, file.FileDescription);
}