bo/Workbench/QMonitor/qmonlib.ui/Views/Navigator/NavSearch.axaml

<UserControl xmlns="https://github.com/avaloniaui"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             xmlns:vm-navigator="clr-namespace:qmonlib.ui.ViewModels.Navigator"
             x:DataType="vm-navigator:NavSearchViewModel"
             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
             x:Class="qmonlib.ui.Views.Navigator.NavSearch"
             x:CompileBindings="True">

            <TextBox Name="tbSearch" 
                     Text="{Binding SearchText}" 
                     Watermark="Type pattern filter"
                     >
                <ToolTip.Tip>
                    Put pattern like (use * for any character) string to filter requested values from list
                </ToolTip.Tip>
            </TextBox>
             
</UserControl>