wpf之通过MVVM绑定MouseEnter

今天想通过MVVM来绑定MouseEnter事件，现在尝试如下：

首先需要安装包：

再引入命名控件：

xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"

 

再在VM里面编写鼠标移动的处理事件

<Window x:Class="MvvmMousrEnter.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"
        xmlns:local="clr-namespace:MvvmMousrEnter"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Grid >
        <Label Height="160" Width="160" Padding="0" Background="#212121" Foreground="#c9c9c9" VerticalAlignment="Center" HorizontalAlignment="Center"
               Content="{Binding Name, UpdateSourceTrigger=PropertyChanged}">
            <i:Interaction.Triggers>
                <i:EventTrigger  EventName="MouseEnter">
                    <i:InvokeCommandAction Command="{Binding _CmdMouseEnter}"/>
                </i:EventTrigger>
                <i:EventTrigger  EventName="MouseLeave">
                    <i:InvokeCommandAction Command="{Binding _CmdMouseLeave}"/>
                </i:EventTrigger>
            </i:Interaction.Triggers>
        </Label>
    </Grid>
</Window>

其实就是两个事件的处理，

看vm模块的处理：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace MvvmMousrEnter
{
    class My_vm: ObservableObject
    {

        string _Name;
        public string Name
        {
            get
            {
                return _Name;
            }
            set
            {
                UpdateProperty(ref _Name, value);
            }
        }


        public DelegateCommand _CmdMouseLeave => new DelegateCommand(CmdMouseLeave);
        void CmdMouseLeave(object obj)
        {
            Name = 33333 + "";
        }

        public DelegateCommand _CmdMouseEnter => new DelegateCommand(CmdMouseEnter);
        void CmdMouseEnter(object obj)
        {
            Name = 44444 + "";
        }
    }
}

再看结果：达到预期

为了便于大家交流学习，代码提交如下：

https://gitee.com/g0415shenw/Csharp/tree/master/MvvmMousrEnter