如何动态地将项目添加到WrapPanel？

I have the following XAML:

我有以下XAML：

<Window x:Class="ImageComparing.MainWindow"
    xmlns="https://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="https://schemas.microsoft.com/winfx/2006/xaml" Height="350" Width="525" xmlns:my="clr-namespace:ImageComparing" Title="Image comparing">
    <DockPanel>
        <ToolBar Name="toolbar1" DockPanel.Dock="Top" Height="41" Background="#FFA5D95A">
            /*other content*/
        </ToolBar>
        <WrapPanel Name="wrapPanel1" >
            /*other content*/
            <Label Content="Label" Height="28" Name="label1" />
        </WrapPanel>
    </DockPanel>
</Window>
<Windo