原本使用MVVM开发，我们使用数据绑定是x:Binging

新的关键字x:Bing使用和原来x:Binging区别不大。

<TextBox x:Name="textBox" TextWrapping="Wrap" Text="{x:Bind view.Text, Mode=TwoWay}" HorizontalAlignment="Center" VerticalAlignment="Center" />

几乎没有什么改变

x:Bing的优点是

• 速度比x:Binging快
• 强类型
• 可以在编译找出类型不同的错误

绑定ViewModel

直接在MainPage.xaml.cs写入viewModel view=new viewModel();

在xaml

<Page

    x:Class="uwp15.MainPage"

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

    xmlns:local="using:uwp15"

    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

    mc:Ignorable="d">

    <Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">

        <TextBox x:Name="textBox" TextWrapping="Wrap" Text="{x:Bind view.Text, Mode=TwoWay}" HorizontalAlignment="Center" VerticalAlignment="Center" />

    </Grid>

</Page>

绑定方法

可以在ViewModel写一个方法，然后绑定到xaml

我们可以把常用通知属性写成一个类，给ViewModel继承

using System.ComponentModel;

namespace ViewModel

{

    /// <summary>

    /// 提供继承通知UI改变值

    /// </summary>

    public class notify_property : INotifyPropertyChanged

    {

        public notify_property()

        {

        }

        public event PropertyChangedEventHandler PropertyChanged;

        protected void OnPropertyChanged(string name)

        {

            PropertyChangedEventHandler handler = PropertyChanged;

            if (handler != null)

            {

                handler(this , new PropertyChangedEventArgs(name));

            }

        }

    }

}

ViewModel


PointerEntered方法，给Button绑定

xaml

<Page

    x:Class="uwp15.MainPage"

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

    xmlns:local="using:uwp15"

    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

    mc:Ignorable="d">

    <Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">

        <TextBox x:Name="textBox" TextWrapping="Wrap" Text="{x:Bind view.Text, Mode=TwoWay}" HorizontalAlignment="Center" VerticalAlignment="Center" Margin="258,162,302,166" />

        <Button x:Name="button" Content="{x:Bind view.Text_String_Builder}" HorizontalAlignment="Left" Margin="453,318,0,0" VerticalAlignment="Top"  Click="{x:Bind view.Click}" />

    </Grid>

</Page>

在button的PointerEntered写{x:Bind view.Click}

点击成功到view.Click断点

版权声明：本文为博主原创文章，未经博主允许不得转载。