Styling custom control

Question

I made my own controls. One inherits from DataGrid and the another from ContentControl . One of them gets the other so I try to expose their properties but as I need many different controls I want to make a Style for my control (the one that inherit from DataGrid ) and set the properties from this control to my ContentControl . I just wrote the code like this but it does not work. Any body knows what I am doing wrong?

<Style x:Key="CustomDataGridStyle"
       TargetType="{x:Type controls:CustomDataGrid}">
    <Setter Property="CurrentRow"
            Value="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type controls:DataGridContainer}}, Path=SelectedItem, Mode=TwoWay}" />
    <Setter Property="CaptionVisibility"
            Value="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type controls:DataGridContainer}}, Path=CaptionVisibility, Mode=TwoWay}" />
    <Setter Property="CaptionText"
            Value="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type controls:DataGridContainer}}, Path=CaptionText, Mode=TwoWay}" />
    <Setter Property="RowValidationErrorTemplate"
            Value="{StaticResource BasicRowValidationErrorTemplate}" />
    <Setter Property="CurrentView"
            Value="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type controls:DataGridContainer}}, Path=CurrentView, Mode=OneWayToSource}" />
    <Setter Property="CurrentColumnHeaderText"
            Value="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type controls:DataGridContainer}}, Path=CurrentColumnHeader, Mode=OneWayToSource}" />
    <Setter Property="SelectedCellText"
            Value="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type controls:DataGridContainer}}, Path=SelectedText, Mode=OneWayToSource}" />
    <Setter Property="IsDataGridFocused"
            Value="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type controls:DataGridContainer}}, Path=HasFocus, Mode=OneWayToSource}" />
</Style>

And I have defined my control like this

<controls:CustomDataGrid x:Key="DataGridOne" AutoGenerateColumns="True" x:Shared="False" ItemsSource="{Binding UpdateSourceTrigger=PropertyChanged}" />

and the another one

<controls:DataGridContainer Content="{StaticResource DataGridOne}" DataContext="{Binding Products}" 
                                            x:Name="dataGridOne" SelectedItem="{Binding RelativeSource={RelativeSource FindAncestor, 
                                        AncestorType={x:Type UserControl}},
                                        Path=DataContext.SelectedItem, Mode=TwoWay}" CaptionVisibility="Collapsed"/>

Answer 1

Your style has x:Key attribute set. This means it won't apply to all controls of that type by-default. You should either remove the Key attribute to make the style default and apply to all CustomDataGrid controls, or reference Style in the CustomDataGrid definition like this:

<Window>
  <Window.Resources>
    <Style x:Key="CustomDataGridStyle" TargetType="{x:Type controls:CustomDataGrid}">
     ...
    </Style>
  </Window.Resources>

 <controls:CustomDataGrid ... Style="{StaticResource CustomDataGridStyle}" ... />
</Window>