串联字符串，而不是使用 TextBlock 堆栈

我想在 WPF ItemsControl 中显示一个 Customer 对象列表，我已经为此创建了一个 DataTemplate:

    <DataTemplate DataType="{x:Type myNameSpace:Customer}">
<StackPanel Orientation="Horizontal" Margin="10">
<CheckBox"></CheckBox>
<TextBlock Text="{Binding Path=Number}"></TextBlock>
<TextBlock Text=" - "></TextBlock>
<TextBlock Text="{Binding Path=Name}"></TextBlock>
</StackPanel>
</DataTemplate>

所以我想要的基本上是一个包含 NUMBER-NAME 的简单列表(带有复选框)。有没有一种方法，我可以连接的数字和名称直接在绑定的一部分？

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最佳答案

There is StringFormat property (in .NET 3.5 SP1), which you probably can use. And usefull WPF binding cheat sheat can found here. If it doesn't help, you can allways write your own ValueConverter or custom property for your object.

Just checked, you can use StringFormat with multibinding. In your case code will be something like this:

<TextBlock>
<TextBlock.Text>
<MultiBinding StringFormat=" {0} - {1}">
<Binding Path="Number"/>
<Binding Path="Name"/>
</MultiBinding>
</TextBlock.Text>
</TextBlock>

I had to start format string with space, otherwise Visual Studio wouldn't build, but I think you will find way get around it :)

Edit
The space is needed in the StringFormat to keep the parser from treating {0} as an actual binding. Other alternatives:

<!-- use a space before the first format -->
<MultiBinding StringFormat=" {0} - {1}">


<!-- escape the formats -->
<MultiBinding StringFormat="\{0\} - \{1\}">


<!-- use {} before the first format -->
<MultiBinding StringFormat="{}{0} - {1}">
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You can also use a bindable run. Useful stuff, especially if one wants to add some text formatting (colors, fontweight etc.).

<TextBlock>
<something:BindableRun BoundText="{Binding Number}"/>
<Run Text=" - "/>
<something:BindableRun BoundText="{Binding Name}"/>
</TextBlock>

Here's an original class:
Here are some additional improvements.
And that's all in one piece of code:

public class BindableRun : Run
{
public static readonly DependencyProperty BoundTextProperty = DependencyProperty.Register("BoundText", typeof(string), typeof(BindableRun), new PropertyMetadata(new PropertyChangedCallback(BindableRun.onBoundTextChanged)));


private static void onBoundTextChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
((Run)d).Text = (string)e.NewValue;
}


public String BoundText
{
get { return (string)GetValue(BoundTextProperty); }
set { SetValue(BoundTextProperty, value); }
}


public BindableRun()
: base()
{
Binding b = new Binding("DataContext");
b.RelativeSource = new RelativeSource(RelativeSourceMode.FindAncestor, typeof(FrameworkElement), 1);
this.SetBinding(DataContextProperty, b);
}
}
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In case you want to concat a dynamic value with a static text, try this:

<TextBlock Text="{Binding IndividualSSN, StringFormat= '\{0\} (SSN)'}"/>

Displays: 234-334-5566 (SSN)

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See the following example I used in my code using Run class:

        <TextBlock x:Name="..." Width="..." Height="..."
<Run Text="Area="/>
<Run Text="{Binding ...}"/>
<Run Text="sq.mm"/>
<LineBreak/>
<Run Text="Min Diameter="/>
<Run Text="{Binding...}"/>
<LineBreak/>
<Run Text="Max Diameter="/>
<Run Text="{Binding...}"/>
</TextBlock >

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