WPF 用户控件将数据绑定到用户控件属性
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WPF user control bind data to user control property
提问by user1736332
I have user control:
我有用户控制：
xaml
xml
<UserControl x:Class="controlmaker.checkButton"
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"
mc:Ignorable="d"
d:DesignHeight="114" d:DesignWidth="221">
<Grid Background="Aqua" >
<CheckBox Content="CheckBox" Height="16" HorizontalAlignment="Left" Margin="58,24,0,0" Name="checkBox1" VerticalAlignment="Top" />
<Button Content="{Binding buttText}" Height="23" HorizontalAlignment="Left" Margin="58,57,0,0" Name="button1" VerticalAlignment="Top" Width="75" />
</Grid>
</UserControl>
code behind
背后的代码
public partial class checkButton : UserControl
{
public checkButton()
{
InitializeComponent();
}
public static readonly DependencyProperty buttTextProperty =
DependencyProperty.Register("buttText", typeof(String),
typeof(checkButton), new FrameworkPropertyMetadata(string.Empty));
public String buttText
{
get { return GetValue(buttTextProperty).ToString(); }
set { SetValue(buttTextProperty, value); }
}
}
and main window xaml
和主窗口 xaml
<Window x:Class="controlmaker.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525" xmlns:my="clr-namespace:controlmaker">
<Grid>
<my:checkButton buttText="aka" HorizontalAlignment="Left" Margin="145,115,0,0" x:Name="checkButton1" VerticalAlignment="Top" Height="133" Width="250" />
</Grid>
</Window>
I want to bind user control property in window xaml and bind it in user control to button content property. How to do it?
我想在窗口 xaml 中绑定用户控件属性并将其在用户控件中绑定到按钮内容属性。怎么做？
回答by vitaliy zadorozhnyy
You can try Element binding inside the user control. Just give a name to UserControl and bind property:
您可以在用户控件中尝试 Element 绑定。只需为 UserControl 命名并绑定属性：
<UserControl x:Class="controlmaker.checkButton"
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"
mc:Ignorable="d"
d:DesignHeight="114" d:DesignWidth="221"
x:Name="MyUserControl">
<Grid Background="Aqua" >
<CheckBox Content="CheckBox" Height="16" HorizontalAlignment="Left"
Margin="58,24,0,0" Name="checkBox1" VerticalAlignment="Top" />
<Button Content="{Binding Path=buttText, ElementName=MyUserControl}"
Height="23" HorizontalAlignment="Left" Margin="58,57,0,0"
Name="button1" VerticalAlignment="Top" Width="75" />
</Grid>
</UserControl>
And then you can Bind or put static text from user control usage place
然后您可以从用户控件使用位置绑定或放置静态文本
<my:checkButton buttText="aka" />
or
或者
<my:checkButton buttText="{Binding SomeProperty}" />
