WPF | 跟着视频敲代码6 | 绑定 Binding

https://www.bilibili.com/video/BV1nY411a7T8?p=6

笔记（控件与控件之间建立绑定关系而非通过事件来驱动）：

<Window.Resources>
        <Style  TargetType="TextBox">
            <Setter Property="Height" Value="20"></Setter>
            <Setter Property="Margin" Value="5,0"></Setter>
        </Style>
    </Window.Resources>
    <Grid>
        <StackPanel>
            <Slider   x:Name="sl1"    Minimum="0" Maximum="100"   ></Slider>
            <TextBox  x:Name="tx1"    Text="{Binding ElementName=sl1,Path=Value,Mode=Default}" ></TextBox> <!--Mode默认是双向绑定-->
            <TextBox  x:Name="tx2"    Text="{Binding ElementName=sl1,Path=Value,Mode=OneTime}" ></TextBox>
            <TextBox  x:Name="tx3"    Text="{Binding ElementName=sl1,Path=Value,Mode=OneWay}" ></TextBox>
            <TextBox  x:Name="tx4"    Text="{Binding ElementName=sl1,Path=Value,Mode=OneWayToSource}" ></TextBox>
            <TextBox  x:Name="tx5"    Text="{Binding ElementName=sl1,Path=Value,Mode=TwoWay}" ></TextBox> 
        </StackPanel>
    </Grid>

 

原始（控件与控件之间建立绑定关系通过事件来驱动）：

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public partial class Demo6 : Window    {        public Demo6()        {            InitializeComponent();        }        /// <summary>        /// Slider 滑动 三个输入框显示对应数值        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        private void Slider_ValueChanged(object sender, RoutedPropertyChangedEventArgs<double> e)        {            this.tx1.Text = sl1.Value.ToString();            this.tx2.Text = sl1.Value.ToString();            this.tx3.Text = sl1.Value.ToString();        }          /// <summary>        /// 修改第一个输入框文本值 Slider跟着联动        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        private void tx1_TextChanged(object sender, System.Windows.Controls.TextChangedEventArgs e)        {            double v = 0;            double.TryParse(tx1.Text, out v);            sl1.Value = v;        }    }

　　

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<Window.Resources>         <Style  TargetType="TextBox">             <Setter Property="Height" Value="20"></Setter>             <Setter Property="Margin" Value="5,0"></Setter>         </Style>     </Window.Resources>     <Grid>         <StackPanel>             <Slider   x:Name="sl1"  Minimum="0" Maximum="100" ValueChanged="Slider_ValueChanged"></Slider>             <TextBox  x:Name="tx1"  TextChanged="tx1_TextChanged"></TextBox>             <TextBox  x:Name="tx2"></TextBox>             <TextBox  x:Name="tx3"></TextBox>         </StackPanel>     </Grid>