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Issue with Combobox - On selecting Item the combobox border becomes red why?

Posted By:      Posted Date: September 05, 2010    Points: 0   Category :WPF
 
Hi, I have a combobox. <ComboBox DisplayMemberPath="Name" Name="CB" IsEnabled="{Binding ElementName=RB, Path=IsChecked}"<br/> SelectedValue="{Binding Path=Folders, Mode=TwoWay, UpdateSourceTrigger= PropertyChanged}" /> It has Selected value binding with ObservableCollection as public ObservableCollection<T> _folders; public ObservableCollection<T> Folders { get { return _folders; } set{ _folders = value; }} Combobox's IsEnabled property has binding with a Radio button checked value. PS: I don't have any validation here. The problem I am facing is when I select an Itam from Combobox its border becomes red , I don't understand why this is happening.


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