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My code fails at at startup because the values array in the Converter that is called by the Multibinding is not filled with proper value but have a value of DependencyProperty.UnsetValue . have a look at Convertor and also see where i getting error public class ButtonColorConverter : IMultiValueConverter { public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture) { string val1 = string.Format(" {0} ", values[0]); string val2 = (string)values[1]; **//Here i am getting ==> {DependencyProperty.UnsetValue}** return val1.Equals(val2) ? Brushes.NavajoWhite : Brushes.White; } public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture) { throw new NotImplementedException(); } } You can download full code or see my codes snippet as per below. MainWindow.xaml <Window x:Class="DataPager.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="350" Width="525" xmlns:Local="clr-namespace:DataPager.Convertor_For_BackGround"> <Grid> <Grid.Resources> <Local:ButtonColorConverter x:Key="currentPageSetter"/> </Grid.Resources> <Grid.RowDefinitions> <RowDefinition Height="36*" /> <RowDefinition Height="275*" /> </Grid.RowDefinitions> <ItemsControl Name="pageControl" ItemsSource="{Binding Path=PageCollection}" Grid.Row="0"> <ItemsControl.Tem

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