Screen reader not reading TextBlock content in WPF application - wpf

Question

I am writing a WPF (.net 5) application which should support accessibility specifically windows narrator to read out the screen text. I am using few TextBlocks and expect that as soon as window is shown narrator will start reading all the text present in the screen one by one.
What I observe is that while the Button's content are read out, any TextBlock content is not read by narrator at all.
How can I make the narrator to read all the content of the window one by one.
<Window x:Class="SampleApp.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:SampleApp"
mc:Ignorable="d"
TabIndex="0"
Focusable="True"
Title="MainWindow" Height="450" Width="800">
<Grid>
<StackPanel VerticalAlignment="Center" HorizontalAlignment="Center">
<TextBlock x:Name="firstText"
Text="This is the first line"
KeyboardNavigation.TabIndex="1"
KeyboardNavigation.TabNavigation="Continue"
AutomationProperties.AutomationId="firstTextBox"
AutomationProperties.Name="This is the first line"
/>
<TextBlock x:Name="secondText"
Text="This is the second line"
KeyboardNavigation.TabIndex="2"
KeyboardNavigation.TabNavigation="Continue"
AutomationProperties.AutomationId="secondTextBox"
AutomationProperties.Name="This is the second line"
/>
</StackPanel>
</Grid>
</Window>

Answer 1

Here is a style I use that makes each textblock focusable when the Narrator is on, but does not create a bunch of extra tabs stops if Narrator is off.
<!-- WCAG variant -->
<Style x:Key="WCAG_TextboxStyle" TargetType="{x:Type TextBlock}"
BasedOn="{StaticResource {x:Type TextBlock}}" >
<Setter Property="KeyboardNavigation.IsTabStop" Value="False"/>
<Setter Property="Focusable" Value="False"/>
<Style.Triggers>
<DataTrigger Binding="{Binding IsNarratorOn}" Value="true">
<Setter Property="KeyboardNavigation.IsTabStop" Value="True"/>
<Setter Property="Focusable" Value="True"/>
</DataTrigger>
</Style.Triggers>
</Style>