c# - Learning by example - terminology (?, :, etc) -

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When you were a child, have you ever asked your parents to write some words and they saw you Was told for? My first impression was always like, "OK if I can see it, I will not need it". (Yes, yes, I know phoneticity)

... Anyway, I was looking at some code and I found such an example: 

  txtbx.CharacterCasing = (Checkbox checked)? Character Casing Upper: Character Casing. Normal;

I can find out what this operation does, but obviously I can not do this for Google? Or: And I can not find them while searching for "c # operators", LINQ, Lambda Expression etc. So I have to ask this silly question so that I can start reading about it.

What are these operators?

?: , and the best way to find out here is to ask for! 

  status? First_preview: second expression;

If the condition is correct, then the first expression is evaluated and the result is created; If wrong, the second expression is evaluated and the result is created.

The assignment is very useful for readability, when the entire expression is relatively low: 

  string name = string .isNullOrEmpty (user.Nickname)? User.fullname: user.Nickname

is very simple and fast: 

  string name = user.Fullname; If (! String.IsNullOrEmpty (user.Nickname)) {name = user.Nickname; }

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