PostSharp.Samples.Xaml + EntityFramework
PostSharp.Samples.Xaml + EntityFramework
在将 PostSharp.Samples.Xaml 示例转换为使用 EntityFramework 时，我遇到 PostSharp inserting k__Backing Field into Entity Class, causing Database generation to fail 中提到的 "k__BackingField" 问题。你能告诉我如何使用建议的解决方案 "Use MulticastAttributeUsageAttribute.AttributeTargets to restrict it to properties." 而不会丢失 PostSharp 的 INotifyPropertyChanged 吗？我试图通过展示 EF 和 PS 来说服利益相关者。
这里是AddressModel.cs
的变化
using System;
using System.ComponentModel;
using System.Text;
using PostSharp.Patterns.Contracts;
using PostSharp.Patterns.Model;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
namespace PostSharp.Samples.Xaml
{
public class AddressModel : ModelBase
{
public int AddressId { get; set; }
[DisplayName("Address Line 1")]
[Patterns.Contracts.Required]
public string Line1 { get; set; }
[DisplayName("Address Line 2")]
public string Line2 { get; set; }
[Patterns.Contracts.Required]
public string Town { get; set; }
public string Country { get; set; }
public DateTime Expiration { get; set; }
[IgnoreAutoChangeNotification]
public TimeSpan Lifetime => DateTime.Now - Expiration;
[SafeForDependencyAnalysis]
public string FullAddress
{
get
{
var stringBuilder = new StringBuilder();
if (Line1 != null) stringBuilder.Append(Line1);
if (Line2 != null)
{
if (stringBuilder.Length > 0) stringBuilder.Append("; ");
stringBuilder.Append(Line2);
}
if (Town != null)
{
if (stringBuilder.Length > 0) stringBuilder.Append("; ");
stringBuilder.Append(Town);
}
if (Country != null)
{
if (stringBuilder.Length > 0) stringBuilder.Append("; ");
stringBuilder.Append(Country);
}
return stringBuilder.ToString();
}
}
[ForeignKey("AddressId")]
[Parent]
public virtual CustomerModel Person { get; set; }
}
}
app.config
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<configSections>
<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
</configSections>
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="PostSharp" publicKeyToken="b13fd38b8f9c99d7" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-5.0.37.0" newVersion="5.0.37.0" />
</dependentAssembly>
</assemblyBinding>
</runtime>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1" />
</startup>
<entityFramework>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
<parameters>
<parameter value="mssqllocaldb" />
</parameters>
</defaultConnectionFactory>
<providers>
<provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
</providers>
</entityFramework>
</configuration>
CustomerModel.cs
using System.IO;
using System.Threading;
using PostSharp.Patterns.Collections;
using PostSharp.Patterns.Contracts;
using PostSharp.Patterns.Model;
using PostSharp.Patterns.Threading;
using System;
using System.ComponentModel.DataAnnotations;
using PostSharp.Extensibility;
namespace PostSharp.Samples.Xaml
{
public class CustomerModel : ModelBase
{
[Key]
public int CustomerId { get; set; }
public string FirstName { get; set; }
[Patterns.Contracts.Required]
public string LastName { get; set; }
public string Phone { get; set; }
public string Mobile { get; set; }
public string Email { get; set; }
[Child]
public AdvisableCollection<AddressModel> Addresses { get; set; }
[Reference]
public AddressModel PrincipalAddress { get; set; }
[Reader]
public void Save(string path)
{
using (var stringWriter = new StreamWriter(path))
{
// We need to make sure the object graph is not being modified when we save,
// and this is ensured by [ReaderWriterSynchronized] in ModelBase.
stringWriter.WriteLine($"UserID: {CustomerId}");
//Thread.Sleep(1000);
stringWriter.WriteLine($"FirstName: {FirstName}");
//Thread.Sleep(1000);
stringWriter.WriteLine($"LastName: {LastName}");
//Thread.Sleep(1000);
stringWriter.WriteLine($"Phone: {Phone}");
//Thread.Sleep(1000);
stringWriter.WriteLine($"Mobile: {Mobile}");
//Thread.Sleep(1000);
stringWriter.WriteLine($"Email: {Email}");
//Thread.Sleep(1000);
foreach (var address in Addresses)
{
//Thread.Sleep(1000);
if (address == PrincipalAddress)
stringWriter.WriteLine($"Principal address: {address}");
else
stringWriter.WriteLine($"Secondary address: {address}");
}
try
{
using (var ctx = new EFContext())
{
ctx.Person.Add(this);
ctx.SaveChanges();
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
}
}
}
MainWindow.xaml
<Window x:Class="PostSharp.Samples.Xaml.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:xaml="clr-namespace:PostSharp.Samples.Xaml"
xmlns:controls="clr-namespace:PostSharp.Patterns.Model.Controls;assembly=PostSharp.Patterns.Xaml"
Title="Contact Form" Height="352.584" Width="352.753"
x:Name="Window">
<Window.DataContext>
<xaml:CustomerViewModel />
</Window.DataContext>
<DockPanel>
<ToolBarTray DockPanel.Dock="Top">
<ToolBar>
<Button Name="SaveButton" Command="{Binding ElementName=Window, Path=SaveCommand}">Save</Button>
<controls:UndoButton />
<controls:RedoButton />
</ToolBar>
</ToolBarTray>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="29*" />
<ColumnDefinition Width="316*" />
</Grid.ColumnDefinitions>
<Label Content="First Name:" HorizontalAlignment="Left" Margin="10,62,0,0" VerticalAlignment="Top"
Grid.ColumnSpan="2" />
<TextBox HorizontalAlignment="Left" Height="23" Margin="97.846,62,0,0" TextWrapping="Wrap"
Text="{Binding Path=Customer.FirstName, ValidatesOnExceptions=True}" VerticalAlignment="Top"
Width="189" Grid.Column="1" />
<Label Content="Last Name:" HorizontalAlignment="Left" Margin="10,88,0,0" VerticalAlignment="Top"
Grid.ColumnSpan="2" />
<TextBox HorizontalAlignment="Left" Height="23" Margin="97.846,92,0,0" TextWrapping="Wrap"
Text="{Binding Path=Customer.LastName, ValidatesOnExceptions=True}" VerticalAlignment="Top"
Width="189" Grid.Column="1" />
<Label Content="Principal Address:" HorizontalAlignment="Left" Margin="10,119,0,0" VerticalAlignment="Top"
RenderTransformOrigin="-0.105,-0.462" Grid.ColumnSpan="2" />
<ComboBox HorizontalAlignment="Left" Margin="97.846,120,0,0" VerticalAlignment="Top" Width="189"
ItemsSource="{Binding Path=Customer.Addresses}"
SelectedValue="{Binding Path=Customer.PrincipalAddress}" DisplayMemberPath="FullAddress"
Grid.Column="1" />
<xaml:FancyTextBlock HorizontalAlignment="Left" Margin="10,15,0,0" Text="{Binding Path=FullName}"
VerticalAlignment="Top" Width="214" Grid.ColumnSpan="2" />
<Label Content="Line1:" HorizontalAlignment="Left" Margin="11.846,150,0,0" VerticalAlignment="Top"
Grid.Column="1" />
<TextBox HorizontalAlignment="Left" Height="23" Margin="97.846,154,0,0" TextWrapping="Wrap"
Text="{Binding Path=Customer.PrincipalAddress.Line1, ValidatesOnExceptions=True}"
VerticalAlignment="Top" Width="189" Grid.Column="1" />
<Label Content="Town:" HorizontalAlignment="Left" Margin="12.846,176,0,0" VerticalAlignment="Top"
Grid.Column="1" />
<TextBox HorizontalAlignment="Left" Height="23" Margin="97.846,182,0,0" TextWrapping="Wrap"
Text="{Binding Path=Customer.PrincipalAddress.Town, ValidatesOnExceptions=True}"
VerticalAlignment="Top" Width="189" Grid.Column="1" />
<Label Content="User Id:" HorizontalAlignment="Left" Margin="11.846,210,0,0" VerticalAlignment="Top"
Grid.ColumnSpan="2" />
<TextBox HorizontalAlignment="Left" Height="23" Margin="97.846,210,0,0" TextWrapping="Wrap"
Text="{Binding Path=Customer.UserID, ValidatesOnExceptions=True}" VerticalAlignment="Top"
Width="189" Grid.Column="1" />
</Grid>
</DockPanel>
</Window>
MainWindow.xaml.cs
using System.Windows;
using System.Windows.Input;
using Microsoft.Win32;
using PostSharp.Patterns.Collections;
using PostSharp.Patterns.Model;
using PostSharp.Patterns.Recording;
using PostSharp.Patterns.Threading;
using PostSharp.Patterns.Xaml;
namespace PostSharp.Samples.Xaml
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
[NotifyPropertyChanged]
public partial class MainWindow : Window
{
/* private readonly */
public readonly CustomerModel customer = new CustomerModel
{
Email = "2",
Mobile = "3",
Phone = "4",
CustomerId = 1,
FirstName = "Jan",
LastName = "Novak",
Addresses = new AdvisableCollection<AddressModel>
{
new AddressModel
{
Line1 = "Saldova 1G",
Town = "Prague",
Country = "USA"
},
new AddressModel
{
Line1 = "Tyrsova 25",
Town = "Brno",
Country = "USA"
},
new AddressModel
{
Line1 = "Pivorarka 154",
Town = "Pilsen",
Country = "USA"
}
}
};
private readonly Recorder recorder;
public MainWindow()
{
// We need to have a local reference for [NotifyPropertyChanged] to work.
recorder = RecordingServices.DefaultRecorder;
InitializeComponent();
// Register our custom operation formatter.
RecordingServices.OperationFormatter = new MyOperationFormatter(RecordingServices.OperationFormatter);
// Create initial data.
var customerViewModel = new CustomerViewModel {Customer = customer};
customerViewModel.Customer.PrincipalAddress = customerViewModel.Customer.Addresses[0];
// Clear the initialization steps from the recorder.
recorder.Clear();
DataContext = customerViewModel;
}
[Command]
public ICommand SaveCommand { get; private set; }
public bool CanExecuteSave => recorder.UndoOperations.Count > 0;
private void ExecuteSave()
{
var openFileDialog = new SaveFileDialog();
if (openFileDialog.ShowDialog().GetValueOrDefault())
Save(openFileDialog.FileName);
}
[Background]
[DisableUI]
private void Save(string path)
{
customer.Save(path);
}
}
}
packages.config
<?xml version="1.0" encoding="utf-8"?>
<packages>
<package id="EntityFramework" version="6.2.0" targetFramework="net461" />
<package id="PostSharp" version="5.0.40" targetFramework="net461" developmentDependency="true" />
<package id="PostSharp.Patterns.Aggregation" version="5.0.40" targetFramework="net461" developmentDependency="true" />
<package id="PostSharp.Patterns.Aggregation.Redist" version="5.0.40" targetFramework="net461" />
<package id="PostSharp.Patterns.Common" version="5.0.40" targetFramework="net461" developmentDependency="true" />
<package id="PostSharp.Patterns.Common.Redist" version="5.0.40" targetFramework="net461" />
<package id="PostSharp.Patterns.Model" version="5.0.40" targetFramework="net461" developmentDependency="true" />
<package id="PostSharp.Patterns.Model.Redist" version="5.0.40" targetFramework="net461" />
<package id="PostSharp.Patterns.Threading" version="5.0.40" targetFramework="net461" developmentDependency="true" />
<package id="PostSharp.Patterns.Threading.Redist" version="5.0.40" targetFramework="net461" />
<package id="PostSharp.Patterns.Xaml" version="5.0.40" targetFramework="net461" developmentDependency="true" />
<package id="PostSharp.Patterns.Xaml.Redist" version="5.0.40" targetFramework="net461" />
<package id="PostSharp.Redist" version="5.0.40" targetFramework="net461" />
</packages>
PostSharp.Samples.Xaml.csproj
<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<Import Project="..\..\packages\PostSharp.5.0.40\build\PostSharp.props" Condition="Exists('..\..\packages\PostSharp.5.0.40\build\PostSharp.props')" />
<Import Project="$(MSBuildExtensionsPath)$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)$(MSBuildToolsVersion)\Microsoft.Common.props')" />
<PropertyGroup>
<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
<ProjectGuid>{B10B8456-75F7-4D68-9775-CC87517B07B6}</ProjectGuid>
<OutputType>WinExe</OutputType>
<AppDesignerFolder>Properties</AppDesignerFolder>
<RootNamespace>PostSharp.Samples.Xaml</RootNamespace>
<AssemblyName>PostSharp.Samples.Xaml</AssemblyName>
<TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
<FileAlignment>512</FileAlignment>
<ProjectTypeGuids>{60dc8134-eba5-43b8-bcc9-bb4bc16c2548};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
<WarningLevel>4</WarningLevel>
<NuGetPackageImportStamp>
</NuGetPackageImportStamp>
<LangVersion>6</LangVersion>
<TargetFrameworkProfile />
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
<PlatformTarget>AnyCPU</PlatformTarget>
<DebugSymbols>true</DebugSymbols>
<DebugType>full</DebugType>
<Optimize>false</Optimize>
<OutputPath>bin\Debug\</OutputPath>
<DefineConstants>DEBUG;TRACE</DefineConstants>
<ErrorReport>prompt</ErrorReport>
<WarningLevel>4</WarningLevel>
<Prefer32Bit>false</Prefer32Bit>
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
<PlatformTarget>AnyCPU</PlatformTarget>
<DebugType>pdbonly</DebugType>
<Optimize>true</Optimize>
<OutputPath>bin\Release\</OutputPath>
<DefineConstants>TRACE</DefineConstants>
<ErrorReport>prompt</ErrorReport>
<WarningLevel>4</WarningLevel>
<Prefer32Bit>false</Prefer32Bit>
</PropertyGroup>
<ItemGroup>
<Reference Include="EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089, processorArchitecture=MSIL">
<HintPath>..\..\packages\EntityFramework.6.2.0\lib\net45\EntityFramework.dll</HintPath>
<Private>True</Private>
</Reference>
<Reference Include="EntityFramework.SqlServer, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089, processorArchitecture=MSIL">
<HintPath>..\..\packages\EntityFramework.6.2.0\lib\net45\EntityFramework.SqlServer.dll</HintPath>
<Private>True</Private>
</Reference>
<Reference Include="PostSharp, Version=5.0.40.0, Culture=neutral, PublicKeyToken=b13fd38b8f9c99d7">
<HintPath>..\..\packages\PostSharp.Redist.5.0.40\lib\net35-client\PostSharp.dll</HintPath>
<Private>True</Private>
</Reference>
<Reference Include="PostSharp.Patterns.Aggregation">
<HintPath>..\..\packages\PostSharp.Patterns.Aggregation.Redist.5.0.40\lib\net45\PostSharp.Patterns.Aggregation.dll</HintPath>
<Private>True</Private>
</Reference>
<Reference Include="PostSharp.Patterns.Common">
<HintPath>..\..\packages\PostSharp.Patterns.Common.Redist.5.0.40\lib\net46\PostSharp.Patterns.Common.dll</HintPath>
<Private>True</Private>
</Reference>
<Reference Include="PostSharp.Patterns.Model">
<HintPath>..\..\packages\PostSharp.Patterns.Model.Redist.5.0.40\lib\net40\PostSharp.Patterns.Model.dll</HintPath>
<Private>True</Private>
</Reference>
<Reference Include="PostSharp.Patterns.Threading">
<HintPath>..\..\packages\PostSharp.Patterns.Threading.Redist.5.0.40\lib\net45\PostSharp.Patterns.Threading.dll</HintPath>
<Private>True</Private>
</Reference>
<Reference Include="PostSharp.Patterns.Xaml">
<HintPath>..\..\packages\PostSharp.Patterns.Xaml.Redist.5.0.40\lib\net40\PostSharp.Patterns.Xaml.dll</HintPath>
<Private>True</Private>
</Reference>
<Reference Include="System" />
<Reference Include="System.ComponentModel.DataAnnotations" />
<Reference Include="System.Data" />
<Reference Include="System.Xml" />
<Reference Include="Microsoft.CSharp" />
<Reference Include="System.Core" />
<Reference Include="System.Xml.Linq" />
<Reference Include="System.Data.DataSetExtensions" />
<Reference Include="System.Xaml">
<RequiredTargetFramework>4.0</RequiredTargetFramework>
</Reference>
<Reference Include="WindowsBase" />
<Reference Include="PresentationCore" />
<Reference Include="PresentationFramework" />
</ItemGroup>
<ItemGroup>
<ApplicationDefinition Include="App.xaml">
<Generator>MSBuild:Compile</Generator>
<SubType>Designer</SubType>
</ApplicationDefinition>
<Page Include="FancyTextBlock.xaml">
<SubType>Designer</SubType>
<Generator>MSBuild:Compile</Generator>
</Page>
<Page Include="MainWindow.xaml">
<Generator>MSBuild:Compile</Generator>
<SubType>Designer</SubType>
</Page>
<Compile Include="AddressModel.cs" />
<Compile Include="App.xaml.cs">
<DependentUpon>App.xaml</DependentUpon>
<SubType>Code</SubType>
</Compile>
<Compile Include="CustomerModel.cs" />
<Compile Include="CustomerViewModel.cs" />
<Compile Include="DisableUIAttribute.cs" />
<Compile Include="EFContext.cs" />
<Compile Include="FancyTextBlock.xaml.cs">
<DependentUpon>FancyTextBlock.xaml</DependentUpon>
</Compile>
<Compile Include="MainWindow.xaml.cs">
<DependentUpon>MainWindow.xaml</DependentUpon>
<SubType>Code</SubType>
</Compile>
</ItemGroup>
<ItemGroup>
<Compile Include="ModelBase.cs" />
<Compile Include="MyOperationFormatter.cs" />
<Compile Include="Properties\AssemblyInfo.cs">
<SubType>Code</SubType>
</Compile>
<Compile Include="Properties\Resources.Designer.cs">
<AutoGen>True</AutoGen>
<DesignTime>True</DesignTime>
<DependentUpon>Resources.resx</DependentUpon>
</Compile>
<Compile Include="Properties\Settings.Designer.cs">
<AutoGen>True</AutoGen>
<DependentUpon>Settings.settings</DependentUpon>
<DesignTimeSharedInput>True</DesignTimeSharedInput>
</Compile>
<EmbeddedResource Include="Properties\Resources.resx">
<Generator>ResXFileCodeGenerator</Generator>
<LastGenOutput>Resources.Designer.cs</LastGenOutput>
</EmbeddedResource>
<None Include="app.config" />
<None Include="packages.config" />
<None Include="Properties\Settings.settings">
<Generator>SettingsSingleFileGenerator</Generator>
<LastGenOutput>Settings.Designer.cs</LastGenOutput>
</None>
<AppDesigner Include="Properties\" />
<None Include="README.md" />
</ItemGroup>
<Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
<Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
<PropertyGroup>
<ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them. For more information, see http://go.microsoft.com/fwlink/?LinkID=322105.The missing file is {0}.</ErrorText>
</PropertyGroup>
<Error Condition="!Exists('..\..\packages\PostSharp.5.0.40\build\PostSharp.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\PostSharp.5.0.40\build\PostSharp.props'))" />
<Error Condition="!Exists('..\..\packages\PostSharp.5.0.40\build\PostSharp.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\PostSharp.5.0.40\build\PostSharp.targets'))" />
</Target>
<Import Project="..\..\packages\PostSharp.5.0.40\build\PostSharp.targets" Condition="Exists('..\..\packages\PostSharp.5.0.40\build\PostSharp.targets')" />
<!-- To modify your build process, add your task inside one of the targets below and uncomment it.
Other similar extension points exist, see Microsoft.Common.targets.
<Target Name="BeforeBuild">
</Target>
<Target Name="AfterBuild">
</Target>
-->
其他一切都保持不变，当您更改应用程序中的任何字段并尝试保存时，您应该能够构建它并在 CustomerModel.cs 行 #80 中看到异常。
您获得关注 ex.Message;
One or more validation errors were detected during model generation:
PostSharp.Samples.Xaml.AddressModel: : EntityType 'AddressModel' has no key defined. Define the key for this EntityType.
<Person>k__BackingField: Name: The specified name is not allowed: '<Person>k__BackingField'.
PostSharp.Samples.Xaml.AddressModel_<Person>k__BackingField: Name: The specified name is not allowed: 'AddressModel_<Person>k__BackingField'.
AddressModel_<Person>k__BackingField_Source: Name: The specified name is not allowed: 'AddressModel_<Person>k__BackingField_Source'.
AddressModel_<Person>k__BackingField_Target: Name: The specified name is not allowed: 'AddressModel_<Person>k__BackingField_Target'.
AddressModels: EntityType: EntitySet 'AddressModels' is based on type 'AddressModel' that has no keys defined.
AddressModel_<Person>k__BackingField: Name: The specified name is not allowed: 'AddressModel_<Person>k__BackingField'.
原始示例解决方案中没有的新文件，EFContext.cs:
using System.Data.Entity;
namespace PostSharp.Samples.Xaml
{
public class EFContext :DbContext
{
public DbSet<CustomerModel> Person { get; set; }
}
}
您可以在运行时使用 OnModelCreating 和 modelBuilder.Entity<T>.Ignore(x => x.Property) 以编程方式忽略失败的 属性。下面演示了对 EFContext 的更改：
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
IgnorePostSharpProperties<CustomerModel>(modelBuilder);
IgnorePostSharpProperties<AddressModel>(modelBuilder);
base.OnModelCreating(modelBuilder);
}
public void IgnorePostSharpProperties<T>(DbModelBuilder modelBuilder)
where T : class
{
foreach (PropertyInfo property in typeof(T).GetProperties(BindingFlags.NonPublic | BindingFlags.Instance))
{
// We don't want properties that are compiler-generated with a special PostSharp name.
if (!property.IsDefined(typeof(CompilerGeneratedAttribute), false) || !property.Name.Contains("<"))
continue;
ParameterExpression paramExpression = Expression.Parameter(typeof(T));
Expression expression = Expression.Lambda(
Expression.Property(paramExpression, property.Name),
paramExpression
);
EntityTypeConfiguration<T> entityTypeConfig = modelBuilder.Entity<T>();
MethodInfo ignoreMethodDefinition = entityTypeConfig.GetType().GetMethod("Ignore", BindingFlags.Public | BindingFlags.Instance);
MethodInfo ignoreMethodInstance = ignoreMethodDefinition.MakeGenericMethod(property.PropertyType);
// Ignore the property.
ignoreMethodInstance.Invoke(entityTypeConfig, new object[] {expression});
}
}
在将 PostSharp.Samples.Xaml 示例转换为使用 EntityFramework 时，我遇到 PostSharp inserting k__Backing Field into Entity Class, causing Database generation to fail 中提到的 "k__BackingField" 问题。你能告诉我如何使用建议的解决方案 "Use MulticastAttributeUsageAttribute.AttributeTargets to restrict it to properties." 而不会丢失 PostSharp 的 INotifyPropertyChanged 吗？我试图通过展示 EF 和 PS 来说服利益相关者。
这里是AddressModel.cs
的变化using System;
using System.ComponentModel;
using System.Text;
using PostSharp.Patterns.Contracts;
using PostSharp.Patterns.Model;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
namespace PostSharp.Samples.Xaml
{
public class AddressModel : ModelBase
{
public int AddressId { get; set; }
[DisplayName("Address Line 1")]
[Patterns.Contracts.Required]
public string Line1 { get; set; }
[DisplayName("Address Line 2")]
public string Line2 { get; set; }
[Patterns.Contracts.Required]
public string Town { get; set; }
public string Country { get; set; }
public DateTime Expiration { get; set; }
[IgnoreAutoChangeNotification]
public TimeSpan Lifetime => DateTime.Now - Expiration;
[SafeForDependencyAnalysis]
public string FullAddress
{
get
{
var stringBuilder = new StringBuilder();
if (Line1 != null) stringBuilder.Append(Line1);
if (Line2 != null)
{
if (stringBuilder.Length > 0) stringBuilder.Append("; ");
stringBuilder.Append(Line2);
}
if (Town != null)
{
if (stringBuilder.Length > 0) stringBuilder.Append("; ");
stringBuilder.Append(Town);
}
if (Country != null)
{
if (stringBuilder.Length > 0) stringBuilder.Append("; ");
stringBuilder.Append(Country);
}
return stringBuilder.ToString();
}
}
[ForeignKey("AddressId")]
[Parent]
public virtual CustomerModel Person { get; set; }
}
}
app.config
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<configSections>
<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
</configSections>
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="PostSharp" publicKeyToken="b13fd38b8f9c99d7" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-5.0.37.0" newVersion="5.0.37.0" />
</dependentAssembly>
</assemblyBinding>
</runtime>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1" />
</startup>
<entityFramework>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
<parameters>
<parameter value="mssqllocaldb" />
</parameters>
</defaultConnectionFactory>
<providers>
<provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
</providers>
</entityFramework>
</configuration>
CustomerModel.cs
using System.IO;
using System.Threading;
using PostSharp.Patterns.Collections;
using PostSharp.Patterns.Contracts;
using PostSharp.Patterns.Model;
using PostSharp.Patterns.Threading;
using System;
using System.ComponentModel.DataAnnotations;
using PostSharp.Extensibility;
namespace PostSharp.Samples.Xaml
{
public class CustomerModel : ModelBase
{
[Key]
public int CustomerId { get; set; }
public string FirstName { get; set; }
[Patterns.Contracts.Required]
public string LastName { get; set; }
public string Phone { get; set; }
public string Mobile { get; set; }
public string Email { get; set; }
[Child]
public AdvisableCollection<AddressModel> Addresses { get; set; }
[Reference]
public AddressModel PrincipalAddress { get; set; }
[Reader]
public void Save(string path)
{
using (var stringWriter = new StreamWriter(path))
{
// We need to make sure the object graph is not being modified when we save,
// and this is ensured by [ReaderWriterSynchronized] in ModelBase.
stringWriter.WriteLine($"UserID: {CustomerId}");
//Thread.Sleep(1000);
stringWriter.WriteLine($"FirstName: {FirstName}");
//Thread.Sleep(1000);
stringWriter.WriteLine($"LastName: {LastName}");
//Thread.Sleep(1000);
stringWriter.WriteLine($"Phone: {Phone}");
//Thread.Sleep(1000);
stringWriter.WriteLine($"Mobile: {Mobile}");
//Thread.Sleep(1000);
stringWriter.WriteLine($"Email: {Email}");
//Thread.Sleep(1000);
foreach (var address in Addresses)
{
//Thread.Sleep(1000);
if (address == PrincipalAddress)
stringWriter.WriteLine($"Principal address: {address}");
else
stringWriter.WriteLine($"Secondary address: {address}");
}
try
{
using (var ctx = new EFContext())
{
ctx.Person.Add(this);
ctx.SaveChanges();
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
}
}
}
MainWindow.xaml
<Window x:Class="PostSharp.Samples.Xaml.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:xaml="clr-namespace:PostSharp.Samples.Xaml"
xmlns:controls="clr-namespace:PostSharp.Patterns.Model.Controls;assembly=PostSharp.Patterns.Xaml"
Title="Contact Form" Height="352.584" Width="352.753"
x:Name="Window">
<Window.DataContext>
<xaml:CustomerViewModel />
</Window.DataContext>
<DockPanel>
<ToolBarTray DockPanel.Dock="Top">
<ToolBar>
<Button Name="SaveButton" Command="{Binding ElementName=Window, Path=SaveCommand}">Save</Button>
<controls:UndoButton />
<controls:RedoButton />
</ToolBar>
</ToolBarTray>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="29*" />
<ColumnDefinition Width="316*" />
</Grid.ColumnDefinitions>
<Label Content="First Name:" HorizontalAlignment="Left" Margin="10,62,0,0" VerticalAlignment="Top"
Grid.ColumnSpan="2" />
<TextBox HorizontalAlignment="Left" Height="23" Margin="97.846,62,0,0" TextWrapping="Wrap"
Text="{Binding Path=Customer.FirstName, ValidatesOnExceptions=True}" VerticalAlignment="Top"
Width="189" Grid.Column="1" />
<Label Content="Last Name:" HorizontalAlignment="Left" Margin="10,88,0,0" VerticalAlignment="Top"
Grid.ColumnSpan="2" />
<TextBox HorizontalAlignment="Left" Height="23" Margin="97.846,92,0,0" TextWrapping="Wrap"
Text="{Binding Path=Customer.LastName, ValidatesOnExceptions=True}" VerticalAlignment="Top"
Width="189" Grid.Column="1" />
<Label Content="Principal Address:" HorizontalAlignment="Left" Margin="10,119,0,0" VerticalAlignment="Top"
RenderTransformOrigin="-0.105,-0.462" Grid.ColumnSpan="2" />
<ComboBox HorizontalAlignment="Left" Margin="97.846,120,0,0" VerticalAlignment="Top" Width="189"
ItemsSource="{Binding Path=Customer.Addresses}"
SelectedValue="{Binding Path=Customer.PrincipalAddress}" DisplayMemberPath="FullAddress"
Grid.Column="1" />
<xaml:FancyTextBlock HorizontalAlignment="Left" Margin="10,15,0,0" Text="{Binding Path=FullName}"
VerticalAlignment="Top" Width="214" Grid.ColumnSpan="2" />
<Label Content="Line1:" HorizontalAlignment="Left" Margin="11.846,150,0,0" VerticalAlignment="Top"
Grid.Column="1" />
<TextBox HorizontalAlignment="Left" Height="23" Margin="97.846,154,0,0" TextWrapping="Wrap"
Text="{Binding Path=Customer.PrincipalAddress.Line1, ValidatesOnExceptions=True}"
VerticalAlignment="Top" Width="189" Grid.Column="1" />
<Label Content="Town:" HorizontalAlignment="Left" Margin="12.846,176,0,0" VerticalAlignment="Top"
Grid.Column="1" />
<TextBox HorizontalAlignment="Left" Height="23" Margin="97.846,182,0,0" TextWrapping="Wrap"
Text="{Binding Path=Customer.PrincipalAddress.Town, ValidatesOnExceptions=True}"
VerticalAlignment="Top" Width="189" Grid.Column="1" />
<Label Content="User Id:" HorizontalAlignment="Left" Margin="11.846,210,0,0" VerticalAlignment="Top"
Grid.ColumnSpan="2" />
<TextBox HorizontalAlignment="Left" Height="23" Margin="97.846,210,0,0" TextWrapping="Wrap"
Text="{Binding Path=Customer.UserID, ValidatesOnExceptions=True}" VerticalAlignment="Top"
Width="189" Grid.Column="1" />
</Grid>
</DockPanel>
</Window>
MainWindow.xaml.cs
using System.Windows;
using System.Windows.Input;
using Microsoft.Win32;
using PostSharp.Patterns.Collections;
using PostSharp.Patterns.Model;
using PostSharp.Patterns.Recording;
using PostSharp.Patterns.Threading;
using PostSharp.Patterns.Xaml;
namespace PostSharp.Samples.Xaml
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
[NotifyPropertyChanged]
public partial class MainWindow : Window
{
/* private readonly */
public readonly CustomerModel customer = new CustomerModel
{
Email = "2",
Mobile = "3",
Phone = "4",
CustomerId = 1,
FirstName = "Jan",
LastName = "Novak",
Addresses = new AdvisableCollection<AddressModel>
{
new AddressModel
{
Line1 = "Saldova 1G",
Town = "Prague",
Country = "USA"
},
new AddressModel
{
Line1 = "Tyrsova 25",
Town = "Brno",
Country = "USA"
},
new AddressModel
{
Line1 = "Pivorarka 154",
Town = "Pilsen",
Country = "USA"
}
}
};
private readonly Recorder recorder;
public MainWindow()
{
// We need to have a local reference for [NotifyPropertyChanged] to work.
recorder = RecordingServices.DefaultRecorder;
InitializeComponent();
// Register our custom operation formatter.
RecordingServices.OperationFormatter = new MyOperationFormatter(RecordingServices.OperationFormatter);
// Create initial data.
var customerViewModel = new CustomerViewModel {Customer = customer};
customerViewModel.Customer.PrincipalAddress = customerViewModel.Customer.Addresses[0];
// Clear the initialization steps from the recorder.
recorder.Clear();
DataContext = customerViewModel;
}
[Command]
public ICommand SaveCommand { get; private set; }
public bool CanExecuteSave => recorder.UndoOperations.Count > 0;
private void ExecuteSave()
{
var openFileDialog = new SaveFileDialog();
if (openFileDialog.ShowDialog().GetValueOrDefault())
Save(openFileDialog.FileName);
}
[Background]
[DisableUI]
private void Save(string path)
{
customer.Save(path);
}
}
}
packages.config
<?xml version="1.0" encoding="utf-8"?>
<packages>
<package id="EntityFramework" version="6.2.0" targetFramework="net461" />
<package id="PostSharp" version="5.0.40" targetFramework="net461" developmentDependency="true" />
<package id="PostSharp.Patterns.Aggregation" version="5.0.40" targetFramework="net461" developmentDependency="true" />
<package id="PostSharp.Patterns.Aggregation.Redist" version="5.0.40" targetFramework="net461" />
<package id="PostSharp.Patterns.Common" version="5.0.40" targetFramework="net461" developmentDependency="true" />
<package id="PostSharp.Patterns.Common.Redist" version="5.0.40" targetFramework="net461" />
<package id="PostSharp.Patterns.Model" version="5.0.40" targetFramework="net461" developmentDependency="true" />
<package id="PostSharp.Patterns.Model.Redist" version="5.0.40" targetFramework="net461" />
<package id="PostSharp.Patterns.Threading" version="5.0.40" targetFramework="net461" developmentDependency="true" />
<package id="PostSharp.Patterns.Threading.Redist" version="5.0.40" targetFramework="net461" />
<package id="PostSharp.Patterns.Xaml" version="5.0.40" targetFramework="net461" developmentDependency="true" />
<package id="PostSharp.Patterns.Xaml.Redist" version="5.0.40" targetFramework="net461" />
<package id="PostSharp.Redist" version="5.0.40" targetFramework="net461" />
</packages>
PostSharp.Samples.Xaml.csproj
<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<Import Project="..\..\packages\PostSharp.5.0.40\build\PostSharp.props" Condition="Exists('..\..\packages\PostSharp.5.0.40\build\PostSharp.props')" />
<Import Project="$(MSBuildExtensionsPath)$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)$(MSBuildToolsVersion)\Microsoft.Common.props')" />
<PropertyGroup>
<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
<ProjectGuid>{B10B8456-75F7-4D68-9775-CC87517B07B6}</ProjectGuid>
<OutputType>WinExe</OutputType>
<AppDesignerFolder>Properties</AppDesignerFolder>
<RootNamespace>PostSharp.Samples.Xaml</RootNamespace>
<AssemblyName>PostSharp.Samples.Xaml</AssemblyName>
<TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
<FileAlignment>512</FileAlignment>
<ProjectTypeGuids>{60dc8134-eba5-43b8-bcc9-bb4bc16c2548};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
<WarningLevel>4</WarningLevel>
<NuGetPackageImportStamp>
</NuGetPackageImportStamp>
<LangVersion>6</LangVersion>
<TargetFrameworkProfile />
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
<PlatformTarget>AnyCPU</PlatformTarget>
<DebugSymbols>true</DebugSymbols>
<DebugType>full</DebugType>
<Optimize>false</Optimize>
<OutputPath>bin\Debug\</OutputPath>
<DefineConstants>DEBUG;TRACE</DefineConstants>
<ErrorReport>prompt</ErrorReport>
<WarningLevel>4</WarningLevel>
<Prefer32Bit>false</Prefer32Bit>
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
<PlatformTarget>AnyCPU</PlatformTarget>
<DebugType>pdbonly</DebugType>
<Optimize>true</Optimize>
<OutputPath>bin\Release\</OutputPath>
<DefineConstants>TRACE</DefineConstants>
<ErrorReport>prompt</ErrorReport>
<WarningLevel>4</WarningLevel>
<Prefer32Bit>false</Prefer32Bit>
</PropertyGroup>
<ItemGroup>
<Reference Include="EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089, processorArchitecture=MSIL">
<HintPath>..\..\packages\EntityFramework.6.2.0\lib\net45\EntityFramework.dll</HintPath>
<Private>True</Private>
</Reference>
<Reference Include="EntityFramework.SqlServer, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089, processorArchitecture=MSIL">
<HintPath>..\..\packages\EntityFramework.6.2.0\lib\net45\EntityFramework.SqlServer.dll</HintPath>
<Private>True</Private>
</Reference>
<Reference Include="PostSharp, Version=5.0.40.0, Culture=neutral, PublicKeyToken=b13fd38b8f9c99d7">
<HintPath>..\..\packages\PostSharp.Redist.5.0.40\lib\net35-client\PostSharp.dll</HintPath>
<Private>True</Private>
</Reference>
<Reference Include="PostSharp.Patterns.Aggregation">
<HintPath>..\..\packages\PostSharp.Patterns.Aggregation.Redist.5.0.40\lib\net45\PostSharp.Patterns.Aggregation.dll</HintPath>
<Private>True</Private>
</Reference>
<Reference Include="PostSharp.Patterns.Common">
<HintPath>..\..\packages\PostSharp.Patterns.Common.Redist.5.0.40\lib\net46\PostSharp.Patterns.Common.dll</HintPath>
<Private>True</Private>
</Reference>
<Reference Include="PostSharp.Patterns.Model">
<HintPath>..\..\packages\PostSharp.Patterns.Model.Redist.5.0.40\lib\net40\PostSharp.Patterns.Model.dll</HintPath>
<Private>True</Private>
</Reference>
<Reference Include="PostSharp.Patterns.Threading">
<HintPath>..\..\packages\PostSharp.Patterns.Threading.Redist.5.0.40\lib\net45\PostSharp.Patterns.Threading.dll</HintPath>
<Private>True</Private>
</Reference>
<Reference Include="PostSharp.Patterns.Xaml">
<HintPath>..\..\packages\PostSharp.Patterns.Xaml.Redist.5.0.40\lib\net40\PostSharp.Patterns.Xaml.dll</HintPath>
<Private>True</Private>
</Reference>
<Reference Include="System" />
<Reference Include="System.ComponentModel.DataAnnotations" />
<Reference Include="System.Data" />
<Reference Include="System.Xml" />
<Reference Include="Microsoft.CSharp" />
<Reference Include="System.Core" />
<Reference Include="System.Xml.Linq" />
<Reference Include="System.Data.DataSetExtensions" />
<Reference Include="System.Xaml">
<RequiredTargetFramework>4.0</RequiredTargetFramework>
</Reference>
<Reference Include="WindowsBase" />
<Reference Include="PresentationCore" />
<Reference Include="PresentationFramework" />
</ItemGroup>
<ItemGroup>
<ApplicationDefinition Include="App.xaml">
<Generator>MSBuild:Compile</Generator>
<SubType>Designer</SubType>
</ApplicationDefinition>
<Page Include="FancyTextBlock.xaml">
<SubType>Designer</SubType>
<Generator>MSBuild:Compile</Generator>
</Page>
<Page Include="MainWindow.xaml">
<Generator>MSBuild:Compile</Generator>
<SubType>Designer</SubType>
</Page>
<Compile Include="AddressModel.cs" />
<Compile Include="App.xaml.cs">
<DependentUpon>App.xaml</DependentUpon>
<SubType>Code</SubType>
</Compile>
<Compile Include="CustomerModel.cs" />
<Compile Include="CustomerViewModel.cs" />
<Compile Include="DisableUIAttribute.cs" />
<Compile Include="EFContext.cs" />
<Compile Include="FancyTextBlock.xaml.cs">
<DependentUpon>FancyTextBlock.xaml</DependentUpon>
</Compile>
<Compile Include="MainWindow.xaml.cs">
<DependentUpon>MainWindow.xaml</DependentUpon>
<SubType>Code</SubType>
</Compile>
</ItemGroup>
<ItemGroup>
<Compile Include="ModelBase.cs" />
<Compile Include="MyOperationFormatter.cs" />
<Compile Include="Properties\AssemblyInfo.cs">
<SubType>Code</SubType>
</Compile>
<Compile Include="Properties\Resources.Designer.cs">
<AutoGen>True</AutoGen>
<DesignTime>True</DesignTime>
<DependentUpon>Resources.resx</DependentUpon>
</Compile>
<Compile Include="Properties\Settings.Designer.cs">
<AutoGen>True</AutoGen>
<DependentUpon>Settings.settings</DependentUpon>
<DesignTimeSharedInput>True</DesignTimeSharedInput>
</Compile>
<EmbeddedResource Include="Properties\Resources.resx">
<Generator>ResXFileCodeGenerator</Generator>
<LastGenOutput>Resources.Designer.cs</LastGenOutput>
</EmbeddedResource>
<None Include="app.config" />
<None Include="packages.config" />
<None Include="Properties\Settings.settings">
<Generator>SettingsSingleFileGenerator</Generator>
<LastGenOutput>Settings.Designer.cs</LastGenOutput>
</None>
<AppDesigner Include="Properties\" />
<None Include="README.md" />
</ItemGroup>
<Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
<Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
<PropertyGroup>
<ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them. For more information, see http://go.microsoft.com/fwlink/?LinkID=322105.The missing file is {0}.</ErrorText>
</PropertyGroup>
<Error Condition="!Exists('..\..\packages\PostSharp.5.0.40\build\PostSharp.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\PostSharp.5.0.40\build\PostSharp.props'))" />
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</Target>
<Import Project="..\..\packages\PostSharp.5.0.40\build\PostSharp.targets" Condition="Exists('..\..\packages\PostSharp.5.0.40\build\PostSharp.targets')" />
<!-- To modify your build process, add your task inside one of the targets below and uncomment it.
Other similar extension points exist, see Microsoft.Common.targets.
<Target Name="BeforeBuild">
</Target>
<Target Name="AfterBuild">
</Target>
-->
其他一切都保持不变，当您更改应用程序中的任何字段并尝试保存时，您应该能够构建它并在 CustomerModel.cs 行 #80 中看到异常。
您获得关注 ex.Message;
One or more validation errors were detected during model generation:
PostSharp.Samples.Xaml.AddressModel: : EntityType 'AddressModel' has no key defined. Define the key for this EntityType.
<Person>k__BackingField: Name: The specified name is not allowed: '<Person>k__BackingField'.
PostSharp.Samples.Xaml.AddressModel_<Person>k__BackingField: Name: The specified name is not allowed: 'AddressModel_<Person>k__BackingField'.
AddressModel_<Person>k__BackingField_Source: Name: The specified name is not allowed: 'AddressModel_<Person>k__BackingField_Source'.
AddressModel_<Person>k__BackingField_Target: Name: The specified name is not allowed: 'AddressModel_<Person>k__BackingField_Target'.
AddressModels: EntityType: EntitySet 'AddressModels' is based on type 'AddressModel' that has no keys defined.
AddressModel_<Person>k__BackingField: Name: The specified name is not allowed: 'AddressModel_<Person>k__BackingField'.
原始示例解决方案中没有的新文件，EFContext.cs:
using System.Data.Entity;
namespace PostSharp.Samples.Xaml
{
public class EFContext :DbContext
{
public DbSet<CustomerModel> Person { get; set; }
}
}
您可以在运行时使用 OnModelCreating 和 modelBuilder.Entity<T>.Ignore(x => x.Property) 以编程方式忽略失败的 属性。下面演示了对 EFContext 的更改：
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
IgnorePostSharpProperties<CustomerModel>(modelBuilder);
IgnorePostSharpProperties<AddressModel>(modelBuilder);
base.OnModelCreating(modelBuilder);
}
public void IgnorePostSharpProperties<T>(DbModelBuilder modelBuilder)
where T : class
{
foreach (PropertyInfo property in typeof(T).GetProperties(BindingFlags.NonPublic | BindingFlags.Instance))
{
// We don't want properties that are compiler-generated with a special PostSharp name.
if (!property.IsDefined(typeof(CompilerGeneratedAttribute), false) || !property.Name.Contains("<"))
continue;
ParameterExpression paramExpression = Expression.Parameter(typeof(T));
Expression expression = Expression.Lambda(
Expression.Property(paramExpression, property.Name),
paramExpression
);
EntityTypeConfiguration<T> entityTypeConfig = modelBuilder.Entity<T>();
MethodInfo ignoreMethodDefinition = entityTypeConfig.GetType().GetMethod("Ignore", BindingFlags.Public | BindingFlags.Instance);
MethodInfo ignoreMethodInstance = ignoreMethodDefinition.MakeGenericMethod(property.PropertyType);
// Ignore the property.
ignoreMethodInstance.Invoke(entityTypeConfig, new object[] {expression});
}
}