What technologies should be used when writing a bot for a website

Question

Automation

There is a site n, on which you need to perform monotonous actions in the user's account, based on information that varies over time. You need to:
1) Log in to the site
2) Analyze (parse) information
3) Interact with the site (type text into the field and click OK)
4) You need to catch pop-up windows and parse information from them
Everything should be done on my machine.
I know C#.
Is it possible to use this language for the needs mentioned above or should I use something else. If yes, what exactly?

Answer 1

Points 1-3 can be done on anything with networking tools and xpath / regexp. The 4th complicates things, here it may be easier to take some selenium, since you can steer it from the same C #.

Answer 2

You do not know the language, since you ask the question what can be done with it.

Answer 3

Can be done with C#

Answer 4

AutoIt could do this via Internet Explorer or Firefox:
http://stackoverflow.com/questions/15052540/autoit-how-can-i-write-in-an-input-field-on-a-browser