Question

I am trying to use the xaml below to define a Button that will:

• have an image
• have concatenated text, partly from an external resx & partly from a vm property
• have an accelerator key based on the first letter of the text

The markup below gives me the image and text, but doesn’t work as an accelerator key (the “_” doesn’t hide and Alt-A doesn’t work).

How can I fix the markup to get accelerator key functionality?

---

Current markup and behavior

<Style x:Key="AddNewItemButtonStyle" BasedOn="{StaticResource blueButtonStyle}" TargetType="{x:Type Button}">
    <Setter Property="Content">
        <Setter.Value>
            <StackPanel Orientation="Horizontal" >
                <Image Source="{resx:Resx ResxName=Presentation.Resources.MasterDetail, Key=bullet_add}" Stretch="Uniform" />
                <TextBlock Text="_"/>
                <TextBlock Text="{resx:Resx ResxName=Presentation.Resources.MasterDetail, Key=Subject_AddNew}" />
                <TextBlock Text=" "/>
                <TextBlock Text="{Binding Subject}" />
            </StackPanel>
        </Setter.Value>
    </Setter>
    <Setter Property="Command" Value="{Binding AddNewItemCommand}" />
</Style>

Update w/ HB’s code

Nothing BUT the image:

<Style x:Key="AddNewItemButtonStyle" BasedOn="{StaticResource blueButtonStyle}" TargetType="{x:Type Button}">
    <Setter Property="Content" >
        <Setter.Value>
            <MultiBinding StringFormat="_{0} {1} {2}">
                <Binding Source="{resx:Resx ResxName=Presentation.Resources.MasterDetail, Key=Add}"/>
                <Binding Source="{resx:Resx ResxName=Presentation.Resources.MasterDetail, Key=New}"/>
                <Binding Path="Subject"/>
            </MultiBinding>
        </Setter.Value>
    </Setter>
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="Button">
                <StackPanel Orientation="Horizontal">
                    <Image Source="{resx:Resx ResxName=Presentation.Resources.MasterDetail, Key=bullet_add}" Stretch="Uniform" />
                    <ContentPresenter/>
                </StackPanel>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
    <Setter Property="Command" Value="{Binding AddNewItemCommand}" />
</Style>

Answer 1

You can use AccessText with a multi-binding

    <Style x:Key="AddNewItemButtonStyle" TargetType="{x:Type Button}">
        <Setter Property="Content">
            <Setter.Value>
                <StackPanel Orientation="Horizontal" >
                    <Image Source="{... your image}" Stretch="Uniform" />

                    <AccessText>
                        <AccessText.Text>
                            <MultiBinding StringFormat="{}_{0} {1}">
                                <Binding Source="{... resources}"/>
                                <Binding Source="{Binding Subject}"/>
                            </MultiBinding>
                        </AccessText.Text>
                    </AccessText>
                </StackPanel>
            </Setter.Value>
        </Setter>
    </Style>