New Button style Image not showing - wpf

Question

I am making a style for button to appear in a custom way
The Idea is to write the Image source in the Tag property and the Text in the Content property
So the style goes like this
<Style x:Key="NormalButtonStyle" TargetType="Button">
<Setter Property="Background" Value="Black"/>
<Setter Property="Foreground" Value="White"/>
<Setter Property="Padding" Value="12,4,12,4"/>
<Setter Property="HorizontalAlignment" Value="Left"/>
<Setter Property="VerticalAlignment" Value="Center"/>
<Setter Property="FontWeight" Value="SemiBold"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Button">
<Grid Background="{TemplateBinding Background}">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Image Source="{TemplateBinding Tag}" Height="{TemplateBinding Height}" Width="{TemplateBinding Height}"/>
<ContentPresenter x:Name="ContentPresenter" Grid.Column="1" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="true">
<Setter Property="Foreground" Value="Red" />
</Trigger>
<Trigger Property="IsPressed" Value="true">
<Setter Property="Foreground" Value="Gray"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
Image does not display and only the Text apears
I call the button like this in the MainWindow
<Button Style="{DynamicResource NormalButtonStyle}" Tag="/iPARK;component/Resources/Sign%20out_icon.png" HorizontalAlignment="Right" Margin="20" Click="Signout_Click"/>
If I set the image in the style file directly like this then it shows but then it cannot be reused for other images
<Image Source="/iPARK;component/Resources/Sign%20out_icon.png" Height="{TemplateBinding Height}" Width="{TemplateBinding Height}"/>

Answer 1

When you put an image URI into the Tag property it will not automatically be converted into an ImageSource (as it is done for the Image.Source property). You need to do that explicitly:
<Button ...>
<Button.Tag>
<BitmapImage UriSource="/iPARK;component/Resources/Sign%20out_icon.png"/>
</Button.Tag>
</Button>