Trying to override textbox for combobox styling (System.windows.markup.staticresourceholder exception)

问题

I'm new in WPF and acccording to my previous question How to make selecteditem text red and bold on trigger (in combobox) I still have a problem with making my selecteditem (but not all combobox items) text red and bold in case when its IsNotCorrect property is true. If be more concrete I have system.windows.markup.staticresourceholder exception (it seems that all converters are declared, not sure of my new style declaring and the right order for it). These are the steps I have made:

create style to override textbox for my combobox at the beginning of my xaml file:

<Style x:Key="UserDefinedStyle" TargetType="{x:Type ComboBox}">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type ComboBox}">
                    <TextBox x:Name="PART_EditableTextBox"          
           Template="{StaticResource ComboBoxTextBox}"
           HorizontalAlignment="Left"
           VerticalAlignment="Bottom"
           Margin="3,3,23,3"
           Focusable="True"
           Background="Transparent"
           Visibility="Hidden"/>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

try to apply this style on my combobox (this part is inside of another style.

<Border BorderBrush ="{Binding SelectedReason.IsNotCorrect, Converter={StaticResource DisablingBoolToColorConverter}}" BorderThickness="2">
<ComboBox x:Name="REASON_ID" DisplayMemberPath="Name" IsReadOnly="True" IsEditable="True" SelectedItem="{Binding SelectedReason, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True}" Style"{DynamicResource UserDefinedStyle}">
     <ComboBox.ItemsSource>                                                          
          <CompositeCollection>
              <ComboBoxItem Content="{DynamicResource lang_Common_SelectItem}" IsEnabled="False"/>
              <CollectionContainer Collection="{Binding Source={StaticResource StaticReasons}}"/>
              <TextBox x:Name="Part_EditableTextBox">
                 <TextBox.Style>
                    <Style TargetType="{x:Type TextBox}" BasedOn="{x:Null}">
                        <Style.Triggers>
                           <DataTrigger Binding="{Binding SelectedItem.IsNotCorrect, RelativeSource={RelativeSource AncestorType=ComboBox}}" Value="True">
                                <Setter Property="Foreground" Value="Red" />
                                <Setter Property="FontWeight" Value="Bold" />
                           </DataTrigger>
                        </Style.Triggers>
                     </Style>
                 <TextBox.Style>
              </TextBox>
         </CompositeCollection>
    </ComboBox.ItemsSource>                                                    
</ComboBox>                                                
</Border>

来源：https://stackoverflow.com/questions/60295012/trying-to-override-textbox-for-combobox-styling-system-windows-markup-staticres

标签

wpf

xaml

combobox

selecteditem