Multi tool use

WPF C# DataTrigger Binding to OnPropertyChanged

I'm trying to create a DataTrigger which changes the style of a border whenever a certain property is changed. I've created the property and I'm calling the PropertyChanged event and it works perfectly fine with other XAML components, but for some reason, it won't work with my DataTrigger.

XAML File:

<Style x:Key="InputParameterBorder" TargetType="Border" BasedOn="{StaticResource ParameterBorder}">
<Setter Property="Background" Value="{StaticResource GrayGradient}"/>
<Style.Triggers>
<!-- This changes input color -->
<DataTrigger Binding="{Binding Parameter, Converter={StaticResource IsNullConverter}}" Value="False">
<Setter Property="Background" Value="{StaticResource YellowGradient}" />
</DataTrigger>
</Style.Triggers>
</Style>


C# File:

private IInputParameter _parameter;
public event PropertyChangedEventHandler PropertyChanged;
public IInputParameter Parameter
{ get
{
return _parameter;
}
set
{
_parameter = value;
PropertyChanged(this, new PropertyChangedEventArgs("Parameter"));
}

}


EDIT: I changed InputParameter to Parameter in the Binding method, but it still doesn't work.

EDIT 2: Added XAML code with the implementation of InputParameterBorder.

<DataTemplate x:Key="InputParameterBox">
<Border Style="{StaticResource InputParameterBorder}"
AllowDrop="True" DragEnter="InputParameter_DragEnter" Drop="InputParameter_Drop"
MouseLeftButtonDown="InputParameter_MouseLeftButtonDown">
<Grid>
<TextBlock Text="{Binding Parameter.Type}"
Style="{StaticResource InputParameterTypeLabel}" />
<TextBlock Text="{Binding Parameter.Name}" Style="{StaticResource InputParameterNameLabel}" />
</Grid>
<!--TextBlock Text="{Binding Type, Converter={StaticResource WorkflowParameterTypeConverter}}" -->
</Border>
</DataTemplate>


And implementation of InputParameterBox:

<DataTemplate>
<ItemsControl ItemsSource="{Binding InputParameters}"
ItemTemplate="{StaticResource InputParameterBox}">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel Orientation="Horizontal" HorizontalAlignment="Center" MaxWidth="200" />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
</ItemsControl>
</DataTemplate>


PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(Parameter)));

Value="{x:Null}"

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