Question

Considering WPF controls, how do I know if a check box’s value has changed (toggled)?

I know there are the common Checked, Unchecked, Clicked events, but how about an event for when the value changes, regardless of how it was changed?

I looked through the events and I didn’t find anything, but maybe I’m missing the obvious (as it has happened many times in the past).

Answer 1

You can just bind IsChecked Dependency Property to a boolean. On that binded property setter you can manipulate what you want (independently if it’s setting it to true or false). That works just as expected.

On your view:

  <Grid>
    <CheckBox ... IsChecked="{Binding ShowPending}"/>
  </Grid>

On your DataContext ViewModel or CodeBehind.

  private bool showPending = false;

  public bool ShowPending
  {
      get { return this.showPending; }
      set 
      { 
         //Here you mimic your Toggled event calling what you want!
         this.showPending = value; 
      }
  }