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Question

I have a CheckBox style that I use over multiple UserControl s, ~100 in each one. Then, when I try and use these UserControl s, it can take several seconds to load. I have tracked it down to my style using an image, as when I comment it out, everything works just fine.

Is there a way to load the image in once, then use that local copy in the styles? Or maybe do that with the whole style in each of the UserControl s?

This is the style,

<Style x:Key="MyCheckBoxStyle" TargetType="CheckBox">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="CheckBox">
                <Grid>
                    <Grid VerticalAlignment="Top">
                        <Image Source="/Images/Unchecked.png">
                    </Grid>
                </Grid>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

Answer 1

You could create a BitmapImage once and reuse it:

<BitmapImage x:Key="UncheckedBitmap" UriSource="/Images/Unchecked.png"/>
...
<Image Source="{StaticResource UncheckedBitmap}"/>