MainWindow.xaml

<Window x:Class="Validator.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="700">
    <DockPanel LastChildFill="True">
        <StackPanel Orientation="Horizontal" DockPanel.Dock="Top">
            <Label>Sitemap</Label>
            <TextBox Margin="5" Width="250" Name="txtSitemap"></TextBox>
            <Button Margin="5" Width="30" Click="Button_Click">Add</Button>
            <Button Margin="5" Click="Button_Click_1">Run Checks</Button>
            <ComboBox Margin="5" Name="cmbServer">
                <ComboBoxItem Selector.IsSelected="True" Tag="http://lwvubuntu/w3c-markup-validator/">Local</ComboBoxItem>
                <ComboBoxItem Tag="http://validator.w3.org/">Internet</ComboBoxItem>
            </ComboBox>
        </StackPanel>
        <ListView Name="lstPages">
            <ListView.View>
                <GridView>
                    <GridViewColumn Header="Url" DisplayMemberBinding="{Binding Url}" Width="350" />
                    <GridViewColumn Header="Last Checked" DisplayMemberBinding="{Binding LastChecked}" Width="150" />
                    <GridViewColumn Header="Result" DisplayMemberBinding="{Binding Result}" Width="150" />
                    <GridViewColumn Header="Commands">
                        <GridViewColumn.CellTemplate>
                            <DataTemplate>
                                <StackPanel Orientation="Horizontal">
                                    <Button Margin="2" Tag="{Binding Url}" Click="Button_Click_2">Delete</Button>
                                    <!--<Button Margin="2" Tag="{Binding Url}">Check</Button>-->
                                </StackPanel>
                            </DataTemplate>
                        </GridViewColumn.CellTemplate>
                    </GridViewColumn>
                </GridView>
            </ListView.View>
        </ListView>
    </DockPanel>
</Window>