打印网页而不显示“打印”对话框

Question

I want to print webpage using C# without showing Printer Dialog box. I want to provide the url and it should print the page as displayed. Currently my code is printing HTML code. Please guide me to do so.

Answer 1

This sounds trickier than it is (most probably). My understanding is that you would need some sort of an engine in order to translate all webpage's styles, layout and paintings. and just after that render whatever is the final result. Keeping this in mind one things pops up immediately: browser automation and in particular - selenium could do the job. Since you asked without showing Printer Dialog box, you can run in headless mode Still I think your best bet is to have a Print Preview page loaded via js.ExecuteScript("setTimeout(window.print, 5);"); ( reference) and then carefully locate the print button with waiting handlers.

PS. I don't believe this is the cleanest and easiest solutions out there, however it's the only one I can currently think of.

Answer 2

I successfully do this by these lines. But the issue is that this only prints to default printer. I know to set the default printer but I am looking for solution where I pass printer name and it print the webpage without setting it to default printer first.

ie.Navigate(URL, ref missing, ref missing, ref missing, ref missing);
while (!documentLoaded && ie.QueryStatusWB(OLECMDID.OLECMDID_PRINT) != OLECMDF.OLECMDF_ENABLED)
    ie.ExecWB(OLECMDID.OLECMDID_PRINT, OLECMDEXECOPT.OLECMDEXECOPT_DONTPROMPTUSER, ref missing, ref missing);