CustomColumnsWindow.xaml

<Window x:Class="HttpTraceAnalyser.CustomColumnsWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:sys="clr-namespace:System;assembly=System.Runtime"
        xmlns:model="clr-namespace:HttpTraceAnalyser.Model"
        Title="Custom Columns" Height="460" Width="900"
        MinHeight="360" MinWidth="720"
        WindowStartupLocation="CenterOwner"
        Background="{DynamicResource ApplicationBackgroundBrush}"
        Foreground="{DynamicResource TextFillColorPrimaryBrush}">
    <Window.Resources>
        <ObjectDataProvider x:Key="HeaderSourceValues" MethodName="GetValues" ObjectType="{x:Type sys:Enum}">
            <ObjectDataProvider.MethodParameters>
                <x:Type TypeName="model:HeaderSource" />
            </ObjectDataProvider.MethodParameters>
        </ObjectDataProvider>
    </Window.Resources>
    <DockPanel Margin="10">
        <Grid DockPanel.Dock="Top" Margin="0,0,0,10">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="Auto" />
                <ColumnDefinition Width="*" />
            </Grid.ColumnDefinitions>
            <StackPanel Grid.Column="0" Orientation="Horizontal">
                <Button Content="Load..." Width="80" Margin="0,0,8,0" Click="LoadButton_Click" />
                <Button Content="Save As..." Width="80" Click="SaveButton_Click" />
            </StackPanel>
        </Grid>

        <Grid DockPanel.Dock="Bottom" Margin="0,10,0,0">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="Auto" />
                <ColumnDefinition Width="*" />
                <ColumnDefinition Width="Auto" />
            </Grid.ColumnDefinitions>
            <StackPanel Grid.Column="0" Orientation="Horizontal">
                <Button Content="Add" Width="80" Margin="0,0,8,0" Click="AddButton_Click" />
                <Button Content="Remove" Width="80" Click="RemoveButton_Click" />
            </StackPanel>
            <StackPanel Grid.Column="2" Orientation="Horizontal">
                <Button Content="OK" Width="80" Margin="0,0,8,0"
                        IsDefault="True" Click="OkButton_Click" />
                <Button Content="Cancel" Width="80" IsCancel="True" />
            </StackPanel>
        </Grid>

        <TextBlock DockPanel.Dock="Top" Margin="0,0,0,8" TextWrapping="Wrap"
                   Text="Header name and value patterns use regular expressions. If a value pattern has a capture group, the first group becomes the column value." />

        <TextBlock DockPanel.Dock="Top" Margin="0,0,0,8">
            <Hyperlink Click="RegexCheatSheetLink_Click">Regex cheat sheet</Hyperlink>
        </TextBlock>

        <DataGrid x:Name="ColumnsGrid" AutoGenerateColumns="False"
                  CanUserAddRows="False" CanUserDeleteRows="False"
                  SelectionMode="Extended">
            <DataGrid.Columns>
                <DataGridTextColumn Header="Column name"
                                    Binding="{Binding Name, UpdateSourceTrigger=PropertyChanged}"
                                    Width="160" />
                <DataGridComboBoxColumn Header="Headers from"
                                        ItemsSource="{Binding Source={StaticResource HeaderSourceValues}}"
                                        SelectedItemBinding="{Binding Source}"
                                        Width="170" />
                <DataGridTextColumn Header="Header name pattern"
                                    Binding="{Binding HeaderNamePattern, UpdateSourceTrigger=PropertyChanged}"
                                    Width="240" />
                <DataGridTextColumn Header="Value pattern (optional)"
                                    Binding="{Binding ValuePattern, UpdateSourceTrigger=PropertyChanged}"
                                    Width="*" />
            </DataGrid.Columns>
        </DataGrid>
    </DockPanel>
</Window>