从移动应用程序上传服务器上的图像

I am working on a mobile application on .net. This is a windows mobile application. I am facing a problem in this application that I wanna upload an image/file to given url/server. Many upload classes is not using like Webclient, WebRequest, WebResponse. I used HttpWebRequest, That is not connecting with server. Please anyone can help me on how to upload the images on given url in windows mobile 6 in .net.I am working on a mobile application on .net. T