Uncheck checkboxes on a Custom Control from another form.

IanBaca2

I have a plugin that streams imagery and basmaps from proprietary apis. This has Login/Logout functionality. Logout should reset everything to the state before login (i.e. checkboxes should be unchecked and combo box value set back to default value). In this addin I have a split button on the ribbon with a custom control for the dropdown. This custom control has 4 checkboxes. I need to uncheck any checked boxes at logout. I am having difficulty achieving this. How do I access the checkboxes on a custom control from another form.

I have set up public and private bools in the custom control View Model as shown below.

 

private bool _isSelectedPremium;
public bool IsSelectedPremium
{
	get { return _isSelectedPremium; }
        set
        {
            _isSelectedPremium = value;
            NotifyPropertyChanged("IsSelectedPremium");
        }
}

 

 The public bool is bound to the check box in the xaml:

 

<CheckBox Name="PremiumChkBx" VerticalAlignment="Center" HorizontalAlignment="Left" Margin="10,0,10,0" IsChecked="{Binding IsSelectedPremium}"/>

 

 I am able to do the business logic I need when checked on or off.  

But I cannot get the checkboxes to reset (uncheck if checked) at logout.  The Logout is a button click event handled in another form.

Any help is appreciated, thanks.

CharlesMacleod

If u want to change the property from the UI just change the definition of your property in the view model to be get and set - and make sure the binding is Two-way (which is the default)...so delete out the binding mode stuff (in your xaml) that u added for one-way.

u want something like this in the vm....anyway, keep whittling away at it - sounds like u r almost there 😉

internal class CustomControl1ViewModel : CustomControl  {
   //public bool IsSelectedPremium => Module1.Current.IsSelectedPremium;
    public bool IsSelectedPremium {
      get => Module1.Current.IsSelectedPremium;
      set
      {
        if (value != Module1.Current.IsSelectedPremium)
        {
          Module1.Current.IsSelectedPremium = value;
          NotifyPropertyChanged();
        }
      }
    }