Determining checked Radiobutton from groupbox in WPF following MVVM

Question

I have a groupbox with some radiobuttons. How do I get to know which one which is checked? I am using WPF and following MVVM.

Answer 1

There is another MVVM way to solve this using IsChecked Property

Here's the XAML

Your model will be something like this

 public class RadioButtonQuestion
 {
    public string ChoiceQuestion { get; set; }
    public string answer { get; set; }
    public List ListOfAnswerOptions { get; set; }
 }

 public class AnswerOption
 {
    public string individualRadioButtonText { get; set; }
    public bool IsChecked { get; set; }
 }

ViewModel will look something like this (The selection logic)

RadioButtonQuestion r = new RadioButtonQuestion();
var selectedElement = rbuttonQuestion.answerOptions.FirstOrDefault(c => c.IsChecked);
r.answer = selectedElement.individualRadioButtonText;

So if you set the datacontext of the view to this viewmodel. You must be able to get it to work.

Hope it helps.