C# wpf --- This is a "continuation" of c-sharpcorner.com/forums/how-do-change-the-background-color-on-one-listbox-item-continued-sharp3.
This code
<ListBox x:Name="gLBxEpidemicSequence">
<ListBox.ItemContainerStyle>
<Style TargetType="ListBoxItem">
<Style.Triggers>
<Trigger Property="IsSelected" Condition="True">
<Setter Property="Background" Value="Blue"/>
</Trigger>
</Style.Triggers>
</Style>
</ListBox.ItemContainerStyle>
</ListBox>
results in
The property "Value" is missing.
The property 'Condition' does not exist in XML namespace.