如何在wpf中动态制作样式设置器数据属性（样式不在主窗口xaml中它是单独的xaml）

Question

How di I make the style setter data property dynamically in wpf (style is not in the main window xaml it is separate xaml)

 <Style x:Key="Room3HZ"
        TargetType="Path"
        BasedOn="{StaticResource DrawingItemStyle}">
        <Setter Property="Data"
                Value="M 17,70 L 550,70 551,331 17,331 17,70 195,70 195,330 367,330  367,69"/>
    </Style>

This code is in DrawingStencils.xaml page how to dynamically set the data in mainwindow.xmal.cs page?

Answer 1

If I understand the question, I believe you are asking how to use a WPF Style defined in one XAML file from another XAML file.

What you need to do is reference the XAML style file (DrawingStencils.xaml) in the MainWindow.xaml file as a ResourceDictionary and then apply the style to the target type using the StaticResource keyword.

Are you sure you want to apply this style to type Path?

Shown below is a simple style for Button which is defined is separate file (Styles.xaml) and then referenced in the MainView.xaml file:

Styles.xaml file:

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

    <Style x:Key="MyButtonStyle"
           TargetType="Button">
        <Setter Property="Background"
                Value="Red" />        
    </Style>

</ResourceDictionary>

MainView.xaml file:

<Window x:Class="StyleExample.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">

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

    <Grid>

        <Button Content="My Button"
                Style="{StaticResource MyButtonStyle}" />

    </Grid>
</Window>