C# 如何从父窗口自定义usercontrol

我想知道如何从父窗口更改用户控件，我将usercontrol放入父窗口

我有一个用户控件，其中包含一个网格和数据网格。现在我想在我的窗口中更改数据网格属性。。。我想在网格中添加另一个控件。 像这样的东西

<window>
<usercontrol>
<usercontrol.datagrid backcolor=#ff00000>
<usercontrol/>
<window/>

或者我可以像下面的代码那样在usercontrol网格中添加一个textblock：

<window>
<usercontrol.grid>
<textblock grid.row=1/>
<usercontrol.grid/>
<window/>

用户控件中的所有元素都是公共的，因此我可以从c#代码中进行更改，但我希望使用xaml设计模式进行更改

在windows窗体中，我创建了一个从数据网格视图继承的用户控件，然后对其进行了自定义。我在10个窗口中使用它，在第11个窗口中，我需要稍微更改数据网格视图，我不更改usercontrol，因为它更改了所有窗口，所以我只更改usercontrol在第11个窗口中

---

请帮忙

我认为您应该在UserControl的代码中为DataGrid的BackgroundColor（或任何您想要更改的属性）创建DependencyProperty：

public static DependencyProperty GridColorProperty = DependencyProperty.Register("GridColor", typeof (Brush),
                                                                                         typeof (UserControl1),
                                                                                         new FrameworkPropertyMetadata(
                                                                                             null,
                                                                                             FrameworkPropertyMetadataOptions
                                                                                                 .AffectsRender));
        public Brush GridColor
        {
            get { return (Brush)GetValue(GridColorProperty); }
            set { SetValue(GridColorProperty, value);}
        } 

public static readonly DependencyProperty InnerContentProperty =
            DependencyProperty.Register("InnerContent", typeof (FrameworkElement), typeof (YourControlType),
                                        new FrameworkPropertyMetadata(default(FrameworkElement),
                                                                      FrameworkPropertyMetadataOptions.AffectsRender));

        public FrameworkElement InnerContent
        {
            get { return (FrameworkElement) GetValue(InnerContentProperty); }
            set { SetValue(InnerContentProperty, value); }
        }

之后，您应该在UserControl的XAML中将DataGrid的Color属性绑定到它：

<DataGrid Background="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=YourControlType}, Path=GridColor}"/>

<Grid>
    <Grid.RowDefinitions>
        <RowDefinition/>
        <RowDefinition/>
    </Grid.RowDefinitions>
    <DataGrid Background="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=WpfApplication3:UserControl1}, Path=GridColor}"/>
    <ContentControl Grid.Row="1" Content="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=app:YourControlType}, Path=InnerContent}"/>
</Grid>

UserControl的XAML：

<DataGrid Background="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=YourControlType}, Path=GridColor}"/>

<Grid>
    <Grid.RowDefinitions>
        <RowDefinition/>
        <RowDefinition/>
    </Grid.RowDefinitions>
    <DataGrid Background="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=WpfApplication3:UserControl1}, Path=GridColor}"/>
    <ContentControl Grid.Row="1" Content="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=app:YourControlType}, Path=InnerContent}"/>
</Grid>

用法：

<YourControlType GridColor="Green">
    <YourControlType.InnerContent>
        <Button/>
    </YourControlType.InnerContent>
</YourControlType>

---

但是，如果您只想快速简单地回答最初的问题，那么您无法从XAML直接解决UserControl的内部控件。=）

我认为您应该在UserControl的代码中为DataGrid的BackgroundColor（或任何您想要更改的属性）创建DependencyProperty：

public static DependencyProperty GridColorProperty = DependencyProperty.Register("GridColor", typeof (Brush),
                                                                                         typeof (UserControl1),
                                                                                         new FrameworkPropertyMetadata(
                                                                                             null,
                                                                                             FrameworkPropertyMetadataOptions
                                                                                                 .AffectsRender));
        public Brush GridColor
        {
            get { return (Brush)GetValue(GridColorProperty); }
            set { SetValue(GridColorProperty, value);}
        } 

public static readonly DependencyProperty InnerContentProperty =
            DependencyProperty.Register("InnerContent", typeof (FrameworkElement), typeof (YourControlType),
                                        new FrameworkPropertyMetadata(default(FrameworkElement),
                                                                      FrameworkPropertyMetadataOptions.AffectsRender));

        public FrameworkElement InnerContent
        {
            get { return (FrameworkElement) GetValue(InnerContentProperty); }
            set { SetValue(InnerContentProperty, value); }
        }

之后，您应该在UserControl的XAML中将DataGrid的Color属性绑定到它：

<DataGrid Background="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=YourControlType}, Path=GridColor}"/>

<Grid>
    <Grid.RowDefinitions>
        <RowDefinition/>
        <RowDefinition/>
    </Grid.RowDefinitions>
    <DataGrid Background="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=WpfApplication3:UserControl1}, Path=GridColor}"/>
    <ContentControl Grid.Row="1" Content="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=app:YourControlType}, Path=InnerContent}"/>
</Grid>

UserControl的XAML：

<DataGrid Background="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=YourControlType}, Path=GridColor}"/>

<Grid>
    <Grid.RowDefinitions>
        <RowDefinition/>
        <RowDefinition/>
    </Grid.RowDefinitions>
    <DataGrid Background="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=WpfApplication3:UserControl1}, Path=GridColor}"/>
    <ContentControl Grid.Row="1" Content="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=app:YourControlType}, Path=InnerContent}"/>
</Grid>

用法：

<YourControlType GridColor="Green">
    <YourControlType.InnerContent>
        <Button/>
    </YourControlType.InnerContent>
</YourControlType>

---

但是，如果您只想快速简单地回答最初的问题，那么您无法从XAML直接解决UserControl的内部控件。=）

谢谢你的帮助我很晚才读到你留言的最后几行你回答了所有的问题：）哇，答案很清楚很简单。。。这对我帮助很大。谢谢；）谢谢你的帮助我很晚才读到你留言的最后几行你回答了所有的问题：）哇，答案很清楚很简单。。。这对我帮助很大。谢谢；）