如何创建接受内部 XAML 控件的 UserControl? [英] How to I create a UserControl that accepts inner XAML controls?

问题描述

类似于 Stackpanel，我可以将文本框和按钮等控件作为内部 XAML:

Similar to the Stackpanel, where I can have controls such as textboxes and buttons as inner-XAML:

<StackPanel>
    <Button Content="OK">
    <Button Content="Cancel">
    <Button Content="Apply">
</StackPanel>

我需要的是:

What I need is:

<myControls:myOptionsList>
    <Button Content="OK">
    <Button Content="Cancel">
    <Button Content="Apply">
</myControls:myOptionsList>

推荐答案

假设你的 UserControl 有一个内部 Panel 元素，其他元素应该放在那里，比如这样:

Assuming your UserControl has an inner Panel element where the additional elements should be placed, i.e. like this:

<UserControl x:Class="YourNamespace.OptionsControl" ...>
    <Grid>
        <GroupBox Header="Options">
            <StackPanel x:Name="optionsPanel"/>
        </GroupBox>   
    </Grid>
</UserControl>

您可以简单地将该面板的 Children 属性公开为标记为 UserControl 的 ContentProperty 的 UIElementCollection 属性:

you may simply expose that Panel's Children property as a UIElementCollection property that is marked to be the ContentProperty of the UserControl:

[ContentProperty(nameof(Options))]
public partial class OptionsControl : UserControl
{
    public UIElementCollection Options
    {
        get { return optionsPanel.Children; }
    }

    ...
}

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