.net image upload

I have not progressed from asp to asp.net and have a question about upload in .net. Some time ago, I located an application that had to be purchased to use on my web site, it allowed me to do such things as check the image dimensions, file size, etc. If desired, it even let me dynamically resize the image before uploading was complete to the specific dimensions. Is this something that might be included with the .net enviroment, or do I still need to buy the applicaton?