加载位于MainWindow.xaml中单独文件中的资源

Question

Goal: Creating an XAML template which I can reuse and load into my main view. Is this possible? If so how? Ive read about the ResourceDictionary and came up with something but im not sure where to continue from there.

This is the XAML with my resource (kept very dumb and simple):

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

    <StackPanel x:Key="myUnneccesaryButtonList">
        <Button Content="1"></Button>
        <Button Content="2"></Button>
        <Button Content="3"></Button>
    </StackPanel>

</ResourceDictionary>

Here my MainWindow XAML where I want to use the above template and load it:

<Window x:Class="Sample.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"
        mc:Ignorable="d"

        Title="Sample" WindowState="Maximized">

    <StackPanel x:Name="wrapper" HorizontalAlignment="Stretch" VerticalAlignment="Stretch">

    </StackPanel>
</Window>

Edit: Here is my MainWindow but the Window.Resource declaration doesnt work:

<Window x:Class="Sample.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"
        mc:Ignorable="d"

        Title="Sample" WindowState="Maximized">

    <Window.Resources>
        <ResourceDictionary Source="MyDictionary.xaml" >
    </Window.Resources>

    <StackPanel x:Name="wrapper" HorizontalAlignment="Stretch" VerticalAlignment="Stretch">

    </StackPanel>
</Window>

Answer 1

myUnneccesaryButtonList is not a template but an actual StackPanel instance.

If you set its x:Shared attribute to false in the ResourceDictionary :

<StackPanel x:Key="myUnneccesaryButtonList" x:Shared="False">
    <Button Content="1"></Button>
    <Button Content="2"></Button>
    <Button Content="3"></Button>
</StackPanel>

..you could use a ContentControl to display it in the window:

<ContentControl Content="{StaticResource myUnneccesaryButtonList}" />

What you probably want to do is to create a custom StackPanel class that always adds the Buttons though:

public class CustomStackPanel : System.Windows.Controls.StackPanel
{
    public CustomStackPanel()
    {
        Children.Add(new Button() { Content = "1" });
        Children.Add(new Button() { Content = "2" });
        Children.Add(new Button() { Content = "3" });
    }
}

Usage:

<local:CustomStackPanel x:Name="wrapper" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"/>

Answer 2

if you want a XML Template then you should create a template

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <DataTemplate x:Key="myUnneccesaryButtonList">
        <StackPanel >
            <Button Content="1"></Button>
            <Button Content="2"></Button>
            <Button Content="3"></Button>
        </StackPanel>
    </DataTemplate>
</ResourceDictionary>

then you could define a control to host it

<ContentControl ContentTemplate="{StaticResource myUnneccesaryButtonList}" />

or

<ItemsControl ItemTemplate="{StaticResource myUnneccesaryButtonList}" />

Remember add the dictionary into the Resources

<Window.Resources>
    <ResourceDictionary Source="YourDictionary.xaml" />
</Window.Resources>

or to merge it in

<Window.Resources>
    <ResourceDictionary>
        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary Source="YourDictionary.xaml"/>
        </ResourceDictionary.MergedDictionaries>
    </ResourceDictionary>
</Window.Resources>