wpf RadioButton - get wheter first time selected

Question

Let's say we have a couple of RadioButton objects (all: not selected) and we select one of them.

So what I want to know is; how to determine whether we had a RadioButton selected or not. How can I acheive this in c#?

Have a look at [this](http://stackoverflow.com/a/1797955/6170142). If all radio buttons are not selected, this should return null. If its null then you never selected any of those radio buttons. — Kamalesh Wankhede, Oct 06 '16 at 13:07
thanks a lot @krw12572 that is the key to the right direction — Michael1248, Oct 06 '16 at 13:17

score 1 · Accepted Answer · edited May 23 '17 at 12:30

1

See if any radio button is checked as follows;

var checkedButton = container.Controls.OfType<RadioButton>().FirstOrDefault(r => r.Checked);

If checkedButton remains null then that means you have never selected any of these radio buttons.

In wpf, try following;

 var checkedButton = container.Children.OfType<RadioButton>().FirstOrDefault(r => (bool)r.IsChecked);

Refer this for more description.

edited May 23 '17 at 12:30

Community

answered Oct 07 '16 at 04:32

Kamalesh Wankhede

that is fine if I would call it outside of the CheckedEvent. Calling it inside the CheckedEvent throws still [wrong] result (true result, but not the intended). – Michael1248 Oct 07 '16 at 06:52
Well, you could call it on Page shown event and store its result in some field. Then you could access that field in your CheckedEvent. – Kamalesh Wankhede Oct 07 '16 at 08:36
at the moment I store the value in the Parents TagProperty, but to store it in a field would also be a solution. – Michael1248 Oct 07 '16 at 11:20

1 Answers1