Due to security issues , I can't share my complete code.Is there any other way to figure our this style related problem or can you share your sample code that how I can apply styles in my project 

<UserControl
        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:ig="http://schemas.infragistics.com/xaml"
        xmlns:ignore="http://www.galasoft.ch/ignore"
        xmlns:Properties="clr-namespace:PersonGraph.Properties" x:Class="PersonGraph.MainWindow"
        xmlns:vm="clr-namespace:PersonGraph.ViewModel"
        mc:Ignorable="d ignore"
        Height="700"
        Width="600" 
     >

    <!--<UserControl.DataContext>
        <viewModel:ViewModelLocator/>
    </UserControl.DataContext>-->
    <!--<Style x:Key="MyNodeStyle" TargetType="{x:Type ig:NetworkNodeNodeControl}">-->


    <!--<UserControl.DataContext>
        <Binding Path="Main" Source="."/>
    </UserControl.DataContext>-->

    <UserControl.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="Skins/MainSkin.xaml" />
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </UserControl.Resources>

    <Grid VerticalAlignment="Stretch">
        <Grid.RowDefinitions>
            <RowDefinition/>
            <RowDefinition Height="auto"/>
        </Grid.RowDefinitions>
        <TabControl Grid.Row="0" VerticalAlignment="Stretch">
            <TabItem Header="Main">
                <Grid x:Name="LayoutRoot">
                    <Grid.Resources>
                        <!-- 
https://www.infragistics.com/help/wpf/infragisticswpf.controls.maps.xamnetworknode~infragistics.controls.maps.networknodenodecontrol_members                        
-->
                        <!-- 
 Configuration: *CFG* - text color, font shadow color
 text color:            Foreground="White"
 font shadow color:     <DropShadowEffect Color="Black"                     
 -->
                        <Style x:Key="MyNodeStyle" TargetType="{x:Type ig:NetworkNodeNodeControl}">
                            <Setter Property="Template">
                                <Setter.Value>
                                    <ControlTemplate TargetType="{x:Type ig:NetworkNodeNodeControl}">
                                        <Grid x:Name="ButtonGrid">
                                            <Border CornerRadius="20" Background="{Binding Color}" BorderThickness="0">
                                                <TextBox 
                                                    Background="Transparent" IsReadOnly="True"
                                                    Text="{Binding Name}" Padding="20"  BorderThickness="0"
                                                    FontSize="{Binding FontSize}" TextWrapping="Wrap"
                                                    VerticalAlignment="Center" HorizontalAlignment="Center">
                                                    <TextBox.Resources>
                                                        <Style TargetType="{x:Type TextBox}">
                                                            <Style.Triggers>
                                                                <Trigger Property="IsMouseOver" Value="True">
                                                                    <Setter Property="Foreground" Value="Blue"/>
                                                                </Trigger>
                                                                <Trigger Property="IsMouseOver" Value="False">
                                                                    <Setter Property="Foreground" Value="White"/>
                                                                </Trigger>
                                                            </Style.Triggers>
                                                        </Style>
                                                    </TextBox.Resources>
                                                    <TextBox.Effect>
                                                        <DropShadowEffect ShadowDepth="3" Color="Black" Opacity="1" BlurRadius="3" />
                                                    </TextBox.Effect>
                                                </TextBox>
                                            </Border>
                                        </Grid>
                                    </ControlTemplate>
                                </Setter.Value>
                            </Setter>
                        </Style>

                    </Grid.Resources>

                    <Grid.RowDefinitions>
                        <RowDefinition Height="auto"/>
                        <RowDefinition Height="auto"/>
                        <RowDefinition Height="auto"/>
                        <RowDefinition/>
                    </Grid.RowDefinitions>


                    <Menu Grid.Row="0">
                        <MenuItem Header="Exit" Command="{Binding CmdExitApplication}"/>
                        <MenuItem Header="Fetch Data" Command="{Binding CmdFetch}"/>
                        <MenuItem Header="Load Test Data" Command="{Binding CmdFetchTest}"/>
                        <TextBox Text="Sample # 781239, 998495"/>
                    </Menu>
                    <TextBlock Grid.Row="1" 
                   FontSize="24"
                   FontWeight="Bold"
                   Foreground="Purple"
                   Background="Transparent"
                   Text="{Binding WelcomeTitle}"
                   VerticalAlignment="Top" Height="auto"
                   HorizontalAlignment="Stretch"                   
                   TextWrapping="Wrap" />

                    <StackPanel Grid.Row="2" Orientation="Horizontal">
                        <!-- <TextBox Text="{Binding OrigAcctID, Delay=1000, UpdateSourceTrigger=PropertyChanged}"/> -->

                        <Button x:Name="btnFetchData" Content="Fetch Data" Margin="5" Padding="5" Command="{Binding CmdFetch}" Visibility="Hidden"/>
                        <!--<Label Content="ID" VerticalAlignment="Center"/>-->
                        <TextBox x:Name="txtOrigAcct" Text="{Binding OrigAcctID}"  Padding="5" Width="150" VerticalAlignment="Center"   Visibility="Hidden"    />
                        <Label Content="PPLStatus" VerticalAlignment="Center"/>
                        <TextBox x:Name="txtPPLStatus" Text="{Binding PPLStatus}" Padding="5" Width="50" VerticalAlignment="Center" LostFocus="OrigAcctTxt_LostFocus" />
                        <!--<Label Content="Depth" VerticalAlignment="Center"/>-->
                        <Label Content="Depth" VerticalAlignment="Center"/>

                        <ComboBox x:Name = "cmbDepth" Margin="5" Padding="5" Width="50"  ItemsSource = "{Binding depth}" SelectedItem = "{Binding SelectedDepth}"/>

                        <!--<ListBox Name="lstDepth" ItemsSource = "{Binding depth}"   SelectedItem = "{Binding SelectedDepth}"/>-->
                        <!--<ListBox  Name="lstbxDepth"  Padding="5" Width="50" VerticalAlignment="Center"   >
                            <ListBoxItem Content="1"></ListBoxItem>
                            <ListBoxItem Content="2"></ListBoxItem>
                            <ListBoxItem Content="3"></ListBoxItem>
                            <ListBoxItem Content="4"></ListBoxItem>
                       </ListBox>-->
                        <!--<TextBox x:Name="txtDepth" Text="{Binding Depth}" Padding="5" Width="50" VerticalAlignment="Center" LostFocus="OrigAcctTxt_LostFocus" />-->
                        <!--<ListBox ItemsSource = "{Binding OrigAcctID}"  SelectedItem = "{Binding SelectedStudent}"/>-->

                        <!--<ListBox Name="lstInmateAccounts"  SelectedItem = "{Binding SelectedStudent}"/>-->
                    </StackPanel>



                    <!-- 
Configuration: *CFG* - line color
line color: <ig:XamNetworkNode Line="Red"
-->

                  

                    <ig:XamNetworkNode 
                           x:Name="xnn" Background="AliceBlue"
                           NodeControlAttachedEvent="Xnn_NodeControlAttachedEvent"                   
                           HorizontalAlignment="Stretch" VerticalAlignment="Stretch"
                           ItemsSource="{Binding Persons}" ZoomLevel="1"
                           LineEndCap="SolidArrow" LineCapSize="10"
                           Grid.Row="3" FontWeight="Bold" FontSize="20"
                        SelectedNodesCollectionChanged="xnn_SelectedNodesCollectionChanged" >
                         <!--Infragistics: ConnectionWeightMemberPath doesn't do anything yet. ConnectionWeight has no effect at this time, but we plan to implement functionality for this in the future.-->
                       

                        <ig:XamNetworkNode.GlobalNodeLayouts>
                            <ig:NetworkNodeNodeLayout     
                              x:Name="xmnode"
                                TargetTypeName="Person"
                                NodeStyle="{StaticResource MyNodeStyle}"                            
                                ConnectionsMemberPath="Connections" ConnectionTargetMemberPath="Target"                     
                                ConnectionWeightMemberPath="Weight"
                                ToolTipMemberPath="ToolTip" DisplayMemberPath="Name"  />
                        </ig:XamNetworkNode.GlobalNodeLayouts>
                    </ig:XamNetworkNode>
                    <StackPanel Orientation="Vertical"  Height="150" HorizontalAlignment="Right"  TextBlock.TextAlignment="Justify"  Grid.Row="4" >
                        <Label Content="OPTIONS" />
                        <TextBlock Name="tb_DisaplayNode" Foreground="Blue"/>
                        <Button  x:Name= "btnEditAccount" Content="Back To Edit Account" Margin="1" Padding="2"  Click="btnEditAccount_Click"/>
                        <Button  x:Name=  "btnGenerateReport" Content="Generate Reports" Margin="1" Padding="2"   Click="bth_RemoveNodeFromView_Click"/>
                    </StackPanel>



                </Grid>
            </TabItem>
            <TabItem Header="Messages">
                <Grid>
                    <Grid.RowDefinitions>
                        <RowDefinition Height="auto"/>
                        <RowDefinition/>
                    </Grid.RowDefinitions>
                    <Menu Grid.Row="0">
                        <MenuItem Header="Clear" Command="{Binding CmdClearMessages}">
                            <MenuItem.Background>
                                <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
                                    <GradientStop Color="Black" Offset="0"/>
                                    <GradientStop Color="White" Offset="1"/>
                                </LinearGradientBrush>
                            </MenuItem.Background>
                        </MenuItem>
                    </Menu>
                    <TextBox Grid.Row="1" Background="Transparent"
                   Text="{Binding MessageArea, Mode=OneWay}" IsReadOnly="True"
                   VerticalAlignment="Stretch" 
                   HorizontalAlignment="Stretch"       
                   TextWrapping="Wrap" ScrollViewer.CanContentScroll="True" />
                </Grid>
            </TabItem>
        </TabControl>
        <StatusBar Grid.Row="1" VerticalAlignment="Bottom" HorizontalAlignment="Stretch">
            <Label Content="{Binding StatusMessage}" />
        </StatusBar>
    </Grid>





</UserControl>