MARKUS

                int takeLineCount = array.Count();

                if (parameter != null)

                {

                    int.TryParse(parameter.ToString(), out takeLineCount);

                }

                array.Take(takeLineCount).ToList().ForEach(x => builder.AppendLine(x));

    <Compile Include="Controls\DataNavigation.xaml.cs">

      <DependentUpon>DataNavigation.xaml</DependentUpon>

    </Compile>

    <Compile Include="Converters\IListToIListCountConverter.cs" />

    <Page Include="Controls\DataNavigation.xaml">

      <SubType>Designer</SubType>

      <Generator>MSBuild:Compile</Generator>

    </Page>

                        <telerik:RadLayoutControl ScrollViewer.HorizontalScrollBarVisibility="Disabled"   ScrollViewer.VerticalScrollBarVisibility="Disabled" SelectedItem="{x:Null}">

                            <telerik:LayoutControlExpanderGroup ScrollViewer.HorizontalScrollBarVisibility="Disabled"   ScrollViewer.VerticalScrollBarVisibility="Disabled"  IsExpandable="False" x:Name="infoListPane"  Header="User information List" telerik:StyleManager.Theme="Office2016">

        <convert:IListToIListCountConverter x:Key="IListToIListCountConverter"/>

    <telerik:RadLayoutControl ScrollViewer.VerticalScrollBarVisibility="Disabled" ScrollViewer.HorizontalScrollBarVisibility="Disabled" SelectedItem="{x:Null}">

        <Grid Background="White">

                <Grid.RowDefinitions>

                    <RowDefinition Height="Auto"/>

                    <RowDefinition/>

                </Grid.RowDefinitions>

                <!--<telerik:RadGridView telerik:StyleManager.Theme="Office2016" AutoGenerateColumns="False" ItemsSource="{Binding RequirementList}" ShowGroupPanel="False"

                    <i:Interaction.Behaviors>

                        <Behaviors:ColumnFilterBehavior DefaultOperator="Contains"/>

                    </i:Interaction.Behaviors>

                    <telerik:RadGridView.Columns>

                        <telerik:GridViewDataColumn Header="Commant" IsReadOnly="True" IsFilterable="True"

                        </telerik:GridViewDataColumn>

                    </telerik:RadGridView.Columns>

                </telerik:RadGridView>-->

            <Grid>

                <Grid.ColumnDefinitions>

                    <ColumnDefinition Width="2*"/>

                    <ColumnDefinition Width="10"/>

                    <ColumnDefinition Width="6*"/>

                    <ColumnDefinition Width="10"/>

                    <ColumnDefinition Width="2*"/>

                </Grid.ColumnDefinitions>

                    <RowDefinition Height="Auto"/>

                <controls:DataNavigation HorizontalAlignment="Center" Grid.Column="2"

                                         ItemSource="{Binding RequirementList,Mode=TwoWay}"

                                         CurrentItem="{Binding SelectRequirement,Mode=TwoWay}"/>

                <telerik:RadToggleButton Content="검색" Width="60" Grid.Column="4" Margin="5"/>

                <Line Grid.Row="1" Grid.ColumnSpan="5" Fill="#FFB9B9B9" Margin="5,0" X1="0" X2="1" Y1="1" Stretch="Fill"  Y2="1" Stroke="#FFB0B0B0"/>

            </Grid>

            <ScrollViewer Grid.Row="1" HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto" BorderThickness="1" BorderBrush="Gray">

                    <TextBlock Margin="3" TextWrapping="WrapWithOverflow" Text="{Binding SelectRequirement.mdText,Converter={StaticResource StringMultiLineConvert}}"/>

                </ScrollViewer>

            </Grid>

        <telerik:LayoutControlSplitter/>

        <Grid >

            <Grid.RowDefinitions>

                <RowDefinition Height="Auto"/>

                <RowDefinition  Height="Auto"/>

            </Grid.RowDefinitions>

            <StackPanel>

                <telerik:RadPathButton Width="100" HorizontalAlignment="Left" Content="연결 추가" FontSize="12" Grid.ColumnSpan="2" Margin="15,2,2,2"

                                                Command="{Binding AddVPCommentCommand, Source={StaticResource ViewModel}}"

                                                ContentPlacement="Left" telerik:StyleManager.Theme="Office2016"

                                                CommandParameter="{Binding RelativeSource={RelativeSource AncestorType=telerik:GridViewRow}}"

                                                PathGeometry="m4,7l0,2l3,0l0,3l2,0l0,-3l3,0l0,-2l-3,0l0,-3l-2,0l0,3l-3,0zm4,9c-4.41828,0 -8,-3.58172 -8,-8c0,-4.41828 3.58172,-8 8,-8c4.41828,0 8,3.58172 8,8c0,4.41828 -3.58172,8 -8,8zm0,0" >

                    <telerik:RadPathButton.PathStyle>

                        <Style TargetType="Path">

                            <Setter Property="Width" Value="18"/>

                            <Setter Property="Height" Value="18"/>

                            <Setter Property="Fill" Value="#FF0A93E2" />

                            <Setter Property="Stretch" Value="Fill" />

                            <Setter Property="HorizontalAlignment" Value="Right" />

                            <Setter Property="VerticalAlignment" Value="Center" />

                        </Style>

                    </telerik:RadPathButton.PathStyle>

                </telerik:RadPathButton>

            </StackPanel>

            <telerik:RadGridView x:Name="DetailGridView" GroupRenderMode="Flat" Grid.Row="1"

										BorderThickness="0,1,0,1" Grid.Column="1" telerik:StyleManager.Theme="Office2016"

										GridLinesVisibility="Both"

                                            ScrollViewer.HorizontalScrollBarVisibility="Disabled"  ColumnWidth="Auto"

										CanUserFreezeColumns="False" HorizontalGridLinesBrush="#FFB0AFAF"

										AutoGenerateColumns="False" behavior:GridViewAutoWidthBehavior.IsEnabled="True"

										ItemsSource="{Binding SelectRequirement.VpComments}"

										ShowGroupPanel="False" SelectedItem="{Binding SelectVPComment, Source={StaticResource ViewModel}}"

										IsReadOnly="True" VerticalAlignment="Top">

                <i:Interaction.Triggers>

                    <i:EventTrigger  EventName="SelectionChanged">

                        <i:InvokeCommandAction Command="{Binding SelectedVPCommentCommand, Source={StaticResource ViewModel}}"/>

                    </i:EventTrigger>

                </i:Interaction.Triggers>

                <telerik:RadGridView.Columns>

													Header="Create User" />

													Header="Comment" />

                    <telerik:GridViewDataColumn Width="Auto" Header="연결 제거" IsFilterable="False" IsReadOnly="True">

                        <telerik:GridViewDataColumn.CellTemplate>

                            <DataTemplate>

                                <telerik:RadPathButton ToolTip="Delete Comment" Height="22" Width="22"

                                                Command="{Binding DelVPCommentCommand, Source={StaticResource ViewModel}}"

                                                CommandParameter="{Binding RelativeSource={RelativeSource AncestorType=telerik:GridViewRow}}" Background="{x:Null}" BorderBrush="{x:Null}"

                                                PathGeometry="M108.319,108.319c-2.106,2.107-5.523,2.106-7.632-0.001l-0.003-0.003L70.159,77.79L39.63,108.318   c-2.106,2.108-5.523,2.107-7.634,0c-2.104-2.106-2.105-5.523,0-7.633l30.528-30.528l-30.54-30.541   c-2.106-2.104-2.106-5.521,0-7.631c2.105-2.107,5.522-2.107,7.633-0.001l30.541,30.541l30.528-30.527   c2.105-2.105,5.523-2.105,7.633,0c2.109,2.106,2.107,5.524,0,7.633L77.791,70.157l30.527,30.528   C110.427,102.794,110.427,106.212,108.319,108.319 M119.767,119.767c27.396-27.397,27.396-71.818,0-99.217   C92.37-6.849,47.947-6.85,20.547,20.548c-27.397,27.398-27.396,71.819,0.001,99.22C47.947,147.166,92.368,147.165,119.767,119.767">

                                </telerik:RadPathButton>

                            </DataTemplate>

                        </telerik:GridViewDataColumn.CellTemplate>

                    </telerik:GridViewDataColumn>

                </telerik:RadGridView.Columns>

            </telerik:RadGridView>

        </Grid>

        private void DataNavigation_GiveFeedback(object sender, GiveFeedbackEventArgs e)

        {

        }