Question

lets say that I have a global style set for ItemsContainer control, and this style is applied well during runtime. Now I have a requirement to paint Row background for each row, based on some condition. For this I decided to use RowStyleSelector.

<RadTreeListView RowStyleSelector="{StaticResource ActivityRowStyleSelector}" />

<Style x:Key="xxxTreeListViewStyle" TargetType="telerik:TreeListViewRow">
    <Setter Property="Background" Value="#FFFFE1C4" />
</Style>

<local:xxxRowStyleSelector x:Key="xxxRowStyleSelector"
                           FailureStyle="{StaticResource xxxTreeListViewStyle}"
                           .../>

But this overrides the global style that I set for row, and I just want to change Background property to existing style.

And another question is: how would I apply this change to a particular cell, not row?

Answer 1

You can use the Style.BasedOn property to “inherit” one style from another. Use it like this (where RowGlobalStyle is the name of the global style you’ve created previously):

<Style x:Key="xxxTreeListViewStyle" TargetType="telerik:TreeListViewRow"
    BasedOn="{StaticResource RowGlobalStyle}">
    <Setter Property="Background" Value="#FFFFE1C4" />
</Style>