static void CometWorker_FileUploadRequested(ref HttpFile file) { string fileName = file.ServerMapPath + "\\Upload\\" + file.FileName; file.SaveAs(fileName); string resourceName = file.FileName.Replace("&", "_"); ResourceManager.AddReplaceResource(fileName, resourceName, ResourceType.Image, file.ClientId); CometWorker.SendToClient(file.ClientId, JSON.Method("ShowImage", resourceName)); }