Specify a size for ContextMenu MenuItem Icon

I defined a WPF ContextMenu MenuItem Icon.

Now I see 开发者_运维技巧in this menu images(icons) of different sizes...

Could I explicitly set the icon size of this item?

Yes, you can specify the width and the heigth of your images :

<ContextMenu>
    <MenuItem>
        <MenuItem.Icon>
            <Image Width="50" Height="50" Source="..." />
        </MenuItem.Icon>
    </MenuItem>
    <MenuItem>
        <MenuItem.Icon>
            <Image Width="50" Height="50" Source="..." />
        </MenuItem.Icon>
    </MenuItem>
</ContextMenu>