Develop Reference

Unity keyboard control (press on a key from C# script)

How can I press a key from the C# script? All I found it's just how to get click on a key, I did not find how to press programmatically on a key. How can I do that?
I want to make the key pressed. Not to check if the key is pressed.
For example, I want to press Enter with my C# script.

There is no way in vanilla Unity to simulate a keypress, I believe. Based on what you require, it's most likely that you're trying to simulate an event happening. What you could do is simply make a function that's going to execute the event that's going to happen when you press ENTER and then call that event whenever it's supposed to be executed.
It's already been discussed here :
How to simulate a key press on button click - Unity

C# - Detecting Keydown and KeyUp events in the background

I’ve been trying to create an console application which runs in the background detecting any key ups and keydown events, I’ve seen some threads on global key hooks however, I’m unable to make it detect key ups and key downs rather then key presses.
I’d like some advice on how to go about it, any help is valued and appreciated, thank you.

Figured out a solution using GetAsyncKeyState()

TAPI, C#: Detecting key presses on a phones keypad

I'm attempting to set up a system where I phone a number, and then to confirm it isn't an answering machine I want the recipient to press a phone key to forward the call. The trouble is I'm struggling to find the event that gets raised for phone key presses.
I imagine it is a tone event but nothing seems to be raising.
I could also do with knowing how to detect what key is pressed as well.
Thanks,
Ryan

These are called DTMF tones, TAPI can detect and report them via the ITDigitDetectionEvent interface.
You need to setup the appropriate event filter and tell ITLegacyCallMediaControl::DetectDigits that you are looking for DTMF.

Creating/posting input events in C#

Is it possible to programmatically create input events in c#.
I want to be able to simulate any input, such as pressing a button on the keyboard or moving the mouse pointer from my application. The events generated by the application need to behave (preferably) in exactly the same way that an actual key press for instance does (post an event to the system event queue that is given for applications to process).
I seem to be unable to find any documentation about doing this from c# code after googling for an hour.
As always, any answers will be greatly appreciated.

You can try SendKeys for keyboard input. For more control, and mouse events too, you should P/invoke SendInput().
Be warned that this is difficult to get right and you may find alternative approaches more amenable.

keyboard press without Hardware press

how can I press "Enter" on c# and WPF without pressing enter on hardware keyboard ?

Ah, so you're saying SendKeys is unavailable?
Check these threads, on the MSDN forums: http://social.expression.microsoft.com/Forums/en-US/wpf/thread/915cb53a-704b-4047-8fd0-e7c5a8feae5e/
http://social.msdn.microsoft.com/forums/en-US/wpf/thread/6557c1eb-6eb5-4f4a-84d6-4ae4fb5b9dab/
Sounds like you can trap KeyDown events, but that's not exactly what you want...
Oh, wait! Check this SO thread: How can I programmatically generate keypress events in C#?
Beyond that, How and why do you need to send "Enter" without a keyboard press? There may be a different solution lurking there. :)

Assuming that you're working with WindowsForms... by using SendKeys.Send("{ENTER}");
See this documentation here as well: http://msdn.microsoft.com/de-de/library/system.windows.forms.sendkeys.send.aspx