My asp.net web page contain two textboxes one for URL and another for ImagePath 
I want URL entered by user in following format
e.g <http://articles.site.com> in the URL textbox.If user enter URL other than <http://articles.site.com> this format it should not allowed.Message should display like Enter correct URL.
And for ImagePath entered by user ImagePath textbox like following manner.
e.g <http://articles.site.com/ImageServer/Public/2016/July/EnglishBanner/effective-skunk-rinse-recipe.jpg>