<Application x:Class="DataGridRowDecorator.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:local="clr-namespace:DataGridRowDecorator"
             StartupUri="MainWindow.xaml">
    <Application.Resources>
        <local:MainModel x:Key="{x:Type local:MainModel}"/>
    </Application.Resources>
</Application>

<Window x:Class="DataGridRowDecorator.MainWindow"
        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:DataGridRowDecorator"
        mc:Ignorable="d"
        Title="MainWindow" Height="350" Width="525"
        DataContext="{StaticResource {x:Type local:MainModel}}">
    <Window.Resources>
        <Style TargetType="{x:Type DataGridRow}">
            <Setter Property="BorderThickness" Value="5,4,3,2"/>
            <Setter Property="BorderBrush" Value="Red"/>
            <Setter Property="MinHeight" Value="50"/>
            <Setter Property="Background">
                <Setter.Value>
                    <ImageBrush TileMode="Tile" Viewbox="0,0 1,1" Viewport="0,0 50,50" Stretch="None" ViewportUnits="Absolute"
                                ImageSource="http://asbseo.ru/wp-content/uploads/2011/12/bg_fon.png"/>
                </Setter.Value>
            </Setter>
        </Style>
    </Window.Resources>
    <Grid>
        <DataGrid ItemsSource="{Binding Perones}"/>
    </Grid>
</Window>

using System.Collections.Generic;
using System.ComponentModel;

namespace DataGridRowDecorator
{
    public class BaseModel : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;

        /// <summary> Occurs when a property value changes </summary>
        /// <param name="propertyName">Property name</param>
        protected void OnPropertyChanged(string propertyName)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }
    }

    public class Person
    {
        public Person(string name, int age)
        {
            Name = name;
            Age = age;
        }

        public string Name { get; }
        public int Age { get; }
    }
    public class MainModel : BaseModel
    {
        public MainModel()
        {
            Perones = new List<Person>
            {
                new Person("Roman", 36),
                new Person("Olga", 8),
                new Person("Sofia", 40)
            };
        }

        public List<Person> Perones { get; }
    }
}