ItemPanel Vs ItemPanelTemplate?

ItemsPanel is the property that gets or sets the template which is used to define the items layout, while ItemsPanelTemplate defines the template itself.

WPF provides flexible ways to modify the layout of controls using your own styles.

Refer following example to clarify your concept. I have also attached project for that.

<Window x:Class="WpfApplication1.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:WpfApplication1"
mc:Ignorable="d"
Title="MainWindow" Height="350" Width="525">
<Window.Resources>
<Style TargetType="ComboBox">
<Setter Property="ItemsPanel">
<Setter.Value>
<ItemsPanelTemplate>
<StackPanel Orientation="Horizontal"
VerticalAlignment="Center"
HorizontalAlignment="Center"/>
ItemsPanelTemplate>
Setter.Value>
Setter>
Style>
Window.Resources>
<Grid>
<ComboBox Height="20" Width="80" HorizontalAlignment="Left" VerticalAlignment="Top">
<ComboBoxItem>JanComboBoxItem>
<ComboBoxItem>FebComboBoxItem>
<ComboBoxItem>MarComboBoxItem>
<ComboBoxItem>AprComboBoxItem>
ComboBox>
Grid>
Window>

Note this line

it means this style is setting the ItemsPanel property of a combobox. and then <ItemsPanelTemplate> defines actual template/style.

2 Replies

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Mageshwaran R6y ago
Hi,
Please refer the below link, it might helps you
https://www.wpf-tutorial.com/list-controls/itemscontrol/
Nilesh Shah9y ago
ItemsPanel is the property that gets or sets the template which is used to define the items layout, while ItemsPanelTemplate defines the template itself.

WPF provides flexible ways to modify the layout of controls using your own styles.

Refer following example to clarify your concept. I have also attached project for that.
<Window x:Class="WpfApplication1.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:WpfApplication1"
        mc:Ignorable="d"
        Title="MainWindow" Height="350" Width="525">
    <Window.Resources>
        <Style TargetType="ComboBox">
            <Setter Property="ItemsPanel">
                <Setter.Value>
                    <ItemsPanelTemplate>
                        <StackPanel Orientation="Horizontal"
                            VerticalAlignment="Center"
                            HorizontalAlignment="Center"/>
                    ItemsPanelTemplate>
                Setter.Value>
            Setter>
        Style>
    Window.Resources>
    <Grid>
        <ComboBox Height="20" Width="80" HorizontalAlignment="Left" VerticalAlignment="Top">
            <ComboBoxItem>JanComboBoxItem>
            <ComboBoxItem>FebComboBoxItem>
            <ComboBoxItem>MarComboBoxItem>
            <ComboBoxItem>AprComboBoxItem>
        ComboBox>
    Grid>
Window>
Note this line
<Setter Property="ItemsPanel">

it means this style is setting the ItemsPanel property of a combobox. and then <ItemsPanelTemplate> defines actual template/style.