i want download all images stored in html(web page) , i dont know how much image will be download , and i don`t want use \"HTML AGILITY PACK\"
i search in google bu
First of all I just can't leave this phrase alone:
images stored in html
That phrase is probably a big part of the reason your question was down-voted twice. Images are not stored in html. Html pages have references to images that web browsers download separately.
This means you need to do this in three steps: first download the html, then find the image references inside the html, and finally use those references to download the images themselves.
To accomplish this, look at the System.Net.WebClient() class. It has a .DownloadString() method you can use to get the html. Then you need to find all the tags. You're own your own here, but it's straightforward enough. Finally, you use WebClient's .DownloadData() or DownloadFile() methods to retrieve the images.