RadExpander.IsExpanded Binding

[Martin Søberg]

I've just switched to telerik and are replacing my elements.

My problem is that the normal expander works and the telerik doesnt..  I've placed them next to each other in the code, to validate this.

 

<Expander IsExpanded="{Binding Path=IsExpanded}"></Expander>

<Telerik:RadExpander IsExpanded="{Binding Path=IsExpanded}" ></Telerik:RadExpander>

Bound to

private bool _isExpanded = true;
public bool IsExpanded
{
   get { return _isExpanded; }
   set
   {
       _isExpanded = value;
       //Some code
   }
}

Is this the wrong way to do it?

- Martin

[Martin Søberg]

Answer:

<Expander IsExpanded="{Binding Path=IsExpanded}"  Margin="0" Padding="0"></Expander>
<Telerik:RadExpander IsExpanded="{Binding Path=IsExpanded, Mode=TwoWay}" ></Telerik:RadExpander>

a bit odd.

[Steve]

You also forgot that you property should be in a class (View model) that inherit of INotifyPropertyChanged like 

Telerik.Windows.Controls.ViewModelBase and call this.OnPropertyChanged(() => this.IsExpanded);

private bool _isExpanded = true;

public bool IsExpanded

{

get { return _isExpanded; }

set

{

_isExpanded = value;

this.OnPropertyChanged(() => this.IsExpanded);

}

}