Agfdhyk

I have a class that extends ViewModelBase in C#. There is already a trigger on a checkbox:

public bool PrintPackingCode

{

    get

    {

        return this.reportConfiguration.PrintPackingCode;

    }



    set

    {

        this.reportConfiguration.PrintPackingCode = value;

        this.OnPropertyChanged("PrintPackingCode");

    }

}

I want to hook into that event and render a GroupBox to disable, yet I can't find a way to access the GroupBox. In the .xaml I gave my Box a name of PackingcodeGroupBox. All methods and hint I found weren't aplieable. My tries inculded:

Direct Access: PackingcodeGroupBox.Enabled = false;

Using a x:Name

this.Resources["mykey"]

Here some more Code:

//At program start assign the view it's view model:

new SmlKonfigurationWindow(new SmlKonfigurationWindowVm(reportConfiguration, smlKonfigurationDialogVm));



public SmlKonfigurationWindow(ISmlKonfigurationWindowVm viewModel)

{

   this.DataContext = viewModel;

   this.viewModel = viewModel;



   this.InitializeComponent();

   this.ShowDialog();

}

The xaml:

<CheckBox Content="Content" IsChecked="{Binding Path=PrintPackingCode, UpdateSourceTrigger=PropertyChanged}" Name="PrintPackingCode"/>

<GroupBox Header="Verpackungscode" Name="VerpackungscodeGroupbox">

   //Stuff to be disabled                      

</GroupBox>

IsEnabled is ambiental property which means that if you disable the GroupBox all controls inside that group box will also be disabled.

Try to add a binding on GroupBox like so:

IsEnabled="{Binding PrintPackingCode}"

You can also bind IsEnabled to check box if you give name to the check box.

<CheckBox x:Name="myCheckBox" .../>

<GroupBox IsEnabled="{Binding ElementName=myCheckBox, Path=IsChecked}"/>

On your vm create a new property say

private bool _isGroupEnabled;



public bool IsGroupEnabled

{

    get

    {

        return _isGroupEnabled;

    }



    set

    {

        _isGroupEnabled = value;

        this.OnPropertyChanged("IsGroupEnabled");

    }

}

Now tie into the notify process by adjusting your set for PrintPackingCode

   set

    {

        this.reportConfiguration.PrintPackingCode = value;

        IsGroupEnabled = !value; // reverse of packing to enable/disable.

        this.OnPropertyChanged("PrintPackingCode");

    }

Now bind your groupbox as such:

isEnabled = "{Binding IsGroupEnabled}"