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: 
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.
You have to click the refresh button at the top of the solution explorer in Visual Studio for it to show changes to the files.