Revit.Plugln/FWindSoft/Test/TestEditor.xaml

<UserControl x:Class="Test.TestEditor"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:local="clr-namespace:Test"
             xmlns:controls="http://schemas.FWind/xaml"
             mc:Ignorable="d" 
             d:DesignHeight="300" d:DesignWidth="300">
    <StackPanel>
        <controls:TextBoxEditor  Text="123"  HorizontalAlignment="Stretch"  CommandParameter="ccc"></controls:TextBoxEditor>
        <controls:TextBoxEditor  Text="123"  HorizontalAlignment="Stretch"  CommandParameter="ccc"></controls:TextBoxEditor>
        <controls:TextBoxEditor  Text="123"  HorizontalAlignment="Stretch"  CommandParameter="ccc"></controls:TextBoxEditor>
        <controls:TextBoxEditor  Text="123"  HorizontalAlignment="Stretch"  CommandParameter="ccc"></controls:TextBoxEditor>
    </StackPanel>
</UserControl>