Question: I have upload control on my asp.net page. I upload pictures in folder cars and they show in windows explorer when I open that folder (cars), but in Visual Sudio they act like they not include in project ( that is the reason why they don't show on image control which point to some of them. What did I make wrong ?

Answer: 
Uploading the images in the web application will never make any changes to your project. You will have to add them manually if you'll need them there. But generally these are pictures added by your user so the would just be in the file system - not really part of the solution, are they?
If you have choosen a webSITE then it will allow this, but not if a webPROJECT is selected. 

I didn't find this on net, but I had two projects, and the one which was allowing me to show uploaded files was a website.