<DocumentViewer  Grid.Column="1" x:Name="PreviewD" 

                 ShowPageBorders="True"                          

                 >

            <DocumentViewer.Resources>

                <!-- Hide_Toolbar -->

                <Style TargetType="ToolBar">

                    <Setter Property="Visibility" Value="Collapsed" />

                </Style>

                <!--/ Hide_Toolbar -->

                <!-- Hide_Search -->

                <Style TargetType="ContentControl">

                    <Setter Property="Visibility" Value="Collapsed" />

                </Style>

                <!--/ Hide_Search -->

            </DocumentViewer.Resources>

        </DocumentViewer>