MARKUS

<Window x:Class="DnsCheckTest.MainWindow"

        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

        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:local="clr-namespace:DnsCheckTest"

        mc:Ignorable="d"

        Title="MainWindow" Height="450" Width="800">

    <Grid>

        <Grid.RowDefinitions>

            <RowDefinition Height="Auto"/>

            <RowDefinition/>

            <RowDefinition/>

        </Grid.RowDefinitions>

        <Button Content="새로고침" HorizontalAlignment="Right" Margin="3" Click="Button_Click"/>

        <TextBox Grid.Row="1" x:Name="txtHostInfoOld"/>

        <TextBox Grid.Row="2" x:Name="txtHostInfo"/>

    </Grid>

</Window>