Comments on: ?? Operator and its use case

By: Mike

Mike — Thu, 21 Aug 2008 13:30:21 +0000

You can also string ?? operators together which makes it even more useful sometimes, e.g.:

string value = ConfigurationManager.AppSettings["AppKey"] ?? ConfigurationManager.AppSettings["UserKey"] ?? “DefaultValue”;

This allows you to prioritise assignment of values and use the first non-null or the default if all are null.

By: Ben Gotow

Ben Gotow — Wed, 09 Jul 2008 17:25:03 +0000

That’s pretty cool – I’ve never really understood the use of the ? and ?? operators. Between that and LINQ – I can probably clean up my C# code

By: Dave Langer

Dave Langer — Fri, 15 Feb 2008 18:59:34 +0000

great! I wa using something stupid like this:

int val;
int.TryParse(ds.Tables[0].ds.Tables[1].Rows[0]["PAY_MONTH"].ToString().Trim(), out val);
payMonth = val;

and now:
payMonth = ds.Tables[1].Rows[0]["MES124"].ToString().Trim() ?? 0;

Thanks Gerhard, 3rd time I found something useful here, keep the good coding…

By: Bryan Migliorisi

Bryan Migliorisi — Mon, 12 Nov 2007 19:01:22 +0000

This was my absolute favorite change when moving from VB to C#

By: Daniel

Daniel — Mon, 12 Nov 2007 17:19:05 +0000

I couldn’t understand some parts of this article nnial 2007 – salvatore iaconesi – del.icio.us poetry, but I guess I just need to check some more resources regarding this, because it sounds interesting.

By: Justin Etheredge

Justin Etheredge — Sun, 11 Nov 2007 16:16:41 +0000

In VB.net you can kinda fake it with a generic method, but the C# operator is just so much more elegant.

By: Kris van der Mast

Kris van der Mast — Sun, 11 Nov 2007 13:08:10 +0000

Hi,

recently I also wrote several articles about the null coalescing operator: http://blog.krisvandermast.com/SearchView.aspx?q=%22null%20coalescing%20operator%22.

Since I found out about the existence of this incredible usefull operator I used on all possible occasions. Too bad VB.NET doesn’t support an equivalent of it.

Grz, Kris.

By: J

Sun, 11 Nov 2007 12:33:18 +0000

It’s its, not it’s