该实例基于WPF实现，直接上代码，下面为三层架构的代码。

一 Model

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace 设计模式练习.Model.抽象工厂模式
{public abstract class AbstructFactory{public abstract Comptuter GetComptuter(string name);public abstract Phone GetPhone(string name);}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace 设计模式练习.Model.抽象工厂模式
{internal class AppleComptuter : Comptuter{public override string Name(){return "苹果电脑";}}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace 设计模式练习.Model.抽象工厂模式
{internal class ApplePhone : Phone{public override string Name(){return "苹果手机";}}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace 设计模式练习.Model.抽象工厂模式
{public abstract class Comptuter{public abstract string Name();}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace 设计模式练习.Model.抽象工厂模式
{internal class ComptuterFactory : AbstructFactory{public override Comptuter GetComptuter(string name){Comptuter comptuter = null;switch (name){case "Apple":comptuter = new AppleComptuter();break;case "Dell":comptuter = new DellComptuter();break;case "Lesson":comptuter = new LessonComptuter();break;}return comptuter;}public override Phone GetPhone(string name){Phone phone = null;switch (name){case "Apple":phone = new ApplePhone();break;case "ReMi":phone = new ReMiPhone();break;case "HauWei":phone = new HauWeiPhone();break;}return phone;}}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace 设计模式练习.Model.抽象工厂模式
{internal class DellComptuter : Comptuter{public override string Name(){return "戴尔电脑";}}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace 设计模式练习.Model.抽象工厂模式
{internal class HauWeiPhone : Phone{public override string Name(){return "华为手机";}}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace 设计模式练习.Model.抽象工厂模式
{internal class LessonComptuter : Comptuter{public override string Name(){return "联想电脑";}}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace 设计模式练习.Model.抽象工厂模式
{public abstract class Phone{public abstract string Name();}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace 设计模式练习.Model.抽象工厂模式
{internal class PhoneFactory : AbstructFactory{public override Comptuter GetComptuter(string name){Comptuter comptuter = null;switch (name){case "Apple":comptuter = new AppleComptuter();break;case "Dell":comptuter = new DellComptuter();break;case "Lesson":comptuter = new LessonComptuter();break;}return comptuter;}public override Phone GetPhone(string name){Phone phone = null;switch (name){case "Apple":phone = new ApplePhone();break;case "ReMi":phone = new ReMiPhone();break;case "HauWei":phone = new HauWeiPhone();break;}return phone;}}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace 设计模式练习.Model.抽象工厂模式
{internal class ReMiPhone : Phone{public override string Name(){return "小米手机";}}
}

二 View

<Window x:Class="设计模式练习.View.抽象工厂模式.AbstructFactory"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:设计模式练习.View.抽象工厂模式"mc:Ignorable="d"Title="AbstructFactory" Height="450" Width="800"><Grid><Grid.ColumnDefinitions><ColumnDefinition Width="8*"/><ColumnDefinition Width="2*"/></Grid.ColumnDefinitions><StackPanel Grid.Column="0"><TextBlock Text="{Binding Ph1}"/><TextBlock Text="{Binding Ph2}"/><TextBlock Text="{Binding Ph3}"/><TextBlock Text="{Binding Cp1}"/><TextBlock Text="{Binding Cp2}"/><TextBlock Text="{Binding Cp3}"/></StackPanel><Button Content="生产随机对象" Grid.Column="1" Command="{Binding fctCommand}"/></Grid>
</Window>

三 ViewModel

using CommunityToolkit.Mvvm.ComponentModel;
using CommunityToolkit.Mvvm.Input;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using 设计模式练习.Model.抽象工厂模式;namespace 设计模式练习.ViewModel.抽象工厂模式
{partial class AbstructFactory_ViewModel : ObservableObject{[ObservableProperty]private string ph1;[ObservableProperty]private string ph2;[ObservableProperty]private string ph3;[ObservableProperty]private string cp1;[ObservableProperty]private string cp2;[ObservableProperty]private string cp3;[RelayCommand]private void fct(){AbstructFactory a = new ComptuterFactory();AbstructFactory b = new PhoneFactory();Cp1 = a.GetComptuter("Dell").Name();Cp2 = a.GetComptuter("Apple").Name();Cp3 = a.GetComptuter("Lesson").Name();Ph1 = b.GetPhone("Apple").Name();Ph2 = b.GetPhone("ReMi").Name();Ph3 = b.GetPhone("HauWei").Name();}}
}