Question

I have an object Person, which has FirstName and LastName properties.

In my WPF UI, I have a Label which needs to bind to the full name:

<Label Binding="{Binding FullName}" />

I don’t want to create another read-only property like:

public string FullName { get { return FirstName + " " + LastName; } }

How can I concatenate these two properties in XAML?

Answer 1

A couple of options:

Option 1: Single TextBlock (or Label) with a MultiBinding:

<TextBlock>
    <TextBlock.Text>
        <MultiBinding StringFormat="{}{0} {1}">
            <Binding Path="FirstName" />
            <Binding Path="LastName" />
        </MultiBinding>
    </TextBlock.Text>
</TextBlock>

Option 2: Multiple TextBlocks (or Labels) in a horizontal StackPanel:

<StackPanel Orientation="Horizontal">
    <TextBlock Text="{Binding FirstName}" />
    <TextBlock Text=" " />
    <TextBlock Text="{Binding LastName}" />
</StackPanel>

Personally I’d go with option 1.