wpf TreeViewItem is not selectable - wpf

Question

I've made a TreeView UserControl using this code:
<UserControl x:Class="Company.ObjectInTreeView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="clr-namespace:Company"
mc:Ignorable="d"
d:DesignHeight="450" d:DesignWidth="800"
x:Name="ObjectInTreeViewControl">
<TreeView ItemsSource="{Binding TreeNodes, ElementName=ObjectInTreeViewControl}" SelectedItemChanged="TreeView_SelectedItemChanged">
<TreeView.ItemContainerStyle>
<Style TargetType="{x:Type TreeViewItem}">
<Setter Property="ToolTip" Value="{Binding ToolTipText}"/>
<Setter Property="Background" Value="Transparent"/>
</Style>
</TreeView.ItemContainerStyle>
<TreeView.Resources>
<HierarchicalDataTemplate DataType="{x:Type local:TreeNode}" ItemsSource="{Binding Path=Children}">
<TreeViewItem IsSelected="{Binding IsSelected, Mode=TwoWay}" IsExpanded="{Binding IsExpanded, Mode=TwoWay}" Selected="TreeViewItem_Selected" Expanded="TreeViewItem_Expanded" MouseLeftButtonUp="TreeViewItem_MouseLeftButtonUp">
<TreeViewItem.Header>
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding Path=Value}" />
</StackPanel>
</TreeViewItem.Header>
</TreeViewItem>
</HierarchicalDataTemplate>
</TreeView.Resources>
</TreeView>
only empty space of TreeViewItem is selectable, and the user can't select an item by click on the text of the item
Only the yellow parts are clickable and selectable:
is there anyone to help me find and correct my mistake?

Answer 1

I've found the problem!
I only changed TreeView.Resources like this:
<TreeView.Resources>
<HierarchicalDataTemplate DataType="{x:Type local:TreeNode}" ItemsSource="{Binding Path=Children}">
<Grid>
<TextBlock Text="{Binding Path=Value}"/>
<TreeViewItem Selected="TreeViewItem_Selected" Expanded="TreeViewItem_Expanded" MouseLeftButtonUp="TreeViewItem_MouseLeftButtonUp"></TreeViewItem>
</Grid>
</HierarchicalDataTemplate>
</TreeView.Resources>
Good luck