[WPF] Hướng dẫn sử dụng Bind To TextBox trong wpf

Để Bind dữ liệu giữa 2 Textbox với nhau trong WPF ta viết mã XAML trong ứng dụng như sau:

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

    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="*" />
        <ColumnDefinition Width="*" />
    </Grid.ColumnDefinitions>

    <Grid.RowDefinitions>
        <RowDefinition Height="Auto" />
        <RowDefinition Height="Auto" />
        <RowDefinition Height="Auto" />
        <RowDefinition Height="Auto" />
    </Grid.RowDefinitions>

    <Label Grid.Row="0" Grid.Column="0" 
           Margin="24 24 24 0"
           Content="Source TextBox Controls" />
    <Label Grid.Row="0" Grid.Column="1" 
           Margin="24 24 24 0"
           Content="Target TextBox Controls" />

    <TextBox Grid.Row="1" Grid.Column="0" Name="txtbox1" 
             Margin="24" />
    <TextBox Grid.Row="1" Grid.Column="1" 
             Margin="24" 
             Text="{Binding ElementName=txtbox1, Path=Text, Mode=TwoWay}" />

    <TextBox Grid.Row="2" Grid.Column="0" Name="txtbox2"  
             Margin="24" />
    <TextBox Grid.Row="2" Grid.Column="1" 
             Margin="24" 
             Text="{Binding ElementName=txtbox2, Path=Text, Mode=TwoWay}" />

    <TextBox Grid.Row="3" Grid.Column="0" Name="txtbox3"  
             Margin="24" />
    <TextBox Grid.Row="3" Grid.Column="1" 
             Margin="24" 
             Text="{Binding ElementName=txtbox3, Path=Text, Mode=TwoWay}" />

</Grid>

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