DevExpress WPF 15.2代码示例：如何在View层定义UI并用View Model命令实现UI元素功能

本示例创建了一个简单的UI，一个带有按钮的MainMenuControl，单击按钮会调用ShowTextCommand（定义在POCO View Model）.

语言：C#   支持版本：v2015.1.3-v2015.2.7

<Window x:Class="WpfApplication25.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:dxb="http://schemas.devexpress.com/winfx/2008/xaml/bars"
        xmlns:dxe="http://schemas.devexpress.com/winfx/2008/xaml/editors"
        xmlns:dx="http://schemas.devexpress.com/winfx/2008/xaml/core"
        xmlns:dxmvvm="http://schemas.devexpress.com/winfx/2008/xaml/mvvm"
        xmlns:local="clr-namespace:WpfApplication25"
        dx:ThemeManager.ThemeName="Office2013"
        DataContext="{dxmvvm:ViewModelSource Type={x:Type local:ViewModel}}"
        Title="MainWindow" Height="350" Width="525">
    <dxmvvm:Interaction.Behaviors>
        <dx:DXMessageBoxService/>
    </dxmvvm:Interaction.Behaviors>
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="Auto"/>
        </Grid.RowDefinitions>
        <dxb:MainMenuControl BarItemDisplayMode="ContentAndGlyph">
            <dxb:BarButtonItem 
                Content="Show Text" 
                Command="{Binding ShowTextCommand}"
                Glyph="{dx:DXImage Image=News_16x16.png}" 
                LargeGlyph="{dx:DXImage Image=News_32x32.png}" />
        </dxb:MainMenuControl>
        <dxe:TextEdit EditValue="{Binding Text, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" NullText="Type your text here" Grid.Row="1"/>
    </Grid>
</Window>