HTML Printing using Gecko or Webkit engine

Is there a way where I can directly print html file or url wi开发者_开发知识库thout invoking any dialogs in .NET?

Yes. Try this program: http://cutycapt.sourceforge.net/. It will allow you to generate an image (or pdf) of a web page. Once you have that there are a variety of ways to print it. For example: Print existing PDF (or other files) in C#.