Interpolation View for calculation result was added

Windows/MainWindow/Materials/PartialFactorsView.xaml

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+<Window x:Class="StructureHelper.Windows.MainWindow.Materials.PartialFactorsView"
+        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:StructureHelper.Windows.MainWindow.Materials"
+        xmlns:vm="clr-namespace:StructureHelper.Windows.ViewModels.Materials"
+        mc:Ignorable="d"
+        d:DataContext="{d:DesignInstance vm:PartialFactorsViewModel}"
+        Title="Material Partial Factors" Height="350" Width="500" WindowStartupLocation="CenterScreen">
+    <Window.Resources>
+
+    </Window.Resources>
+    <Grid>
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="*"/>
+            <ColumnDefinition Width="80"/>
+        </Grid.ColumnDefinitions>
+        <DataGrid ItemsSource="{Binding Items}" AutoGenerateColumns="False" SelectedItem="{Binding SelectedItem}">
+            <DataGrid.RowStyle>
+                <Style TargetType="DataGridRow">
+                    <Style.Triggers>
+                        <DataTrigger Binding="{Binding Take}" Value="false">
+                            <Setter Property="Background" Value="LightGray"/>
+                        </DataTrigger>
+                    </Style.Triggers>
+                </Style>
+            </DataGrid.RowStyle>
+            <DataGrid.Columns>
+                <DataGridComboBoxColumn Header="Stress state" Width="90" MinWidth="70" SelectedItemBinding="{Binding StressState}" ItemsSource="{Binding Source={StaticResource StressStateEnum}}"/>
+                <DataGridComboBoxColumn Header="Limit state" Width="90" MinWidth="70" SelectedItemBinding="{Binding LimitState}" ItemsSource="{Binding Source={StaticResource LimitStateEnum}}"/>
+                <DataGridComboBoxColumn Header="Duration" Width="90" MinWidth="70" SelectedItemBinding="{Binding CalcTerm}" ItemsSource="{Binding Source={StaticResource CalcTermEnum}}"/>
+                <DataGridTextColumn Header="Value" Width="70" MinWidth="70" Binding="{Binding FactorValue, Converter={StaticResource PlainDouble}, ValidatesOnExceptions=True}"/>
+            </DataGrid.Columns>
+        </DataGrid>
+        <StackPanel Grid.Column="1">
+            <Button Style="{StaticResource AddButton}"/>
+            <Button Style="{StaticResource DeleteButton}"/>
+            <Button Style="{StaticResource CopyButton}"/>
+        </StackPanel>
+    </Grid>
+</Window>