Topre.EntityFrameworkCore.ExpressionHelp
1.0.0
dotnet add package Topre.EntityFrameworkCore.ExpressionHelp --version 1.0.0
NuGet\Install-Package Topre.EntityFrameworkCore.ExpressionHelp -Version 1.0.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="Topre.EntityFrameworkCore.ExpressionHelp" Version="1.0.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
<PackageVersion Include="Topre.EntityFrameworkCore.ExpressionHelp" Version="1.0.0" />
<PackageReference Include="Topre.EntityFrameworkCore.ExpressionHelp" />
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package.
paket add Topre.EntityFrameworkCore.ExpressionHelp --version 1.0.0
The NuGet Team does not provide support for this client. Please contact its maintainers for support.
#r "nuget: Topre.EntityFrameworkCore.ExpressionHelp, 1.0.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
#:package Topre.EntityFrameworkCore.ExpressionHelp@1.0.0
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package.
#addin nuget:?package=Topre.EntityFrameworkCore.ExpressionHelp&version=1.0.0
#tool nuget:?package=Topre.EntityFrameworkCore.ExpressionHelp&version=1.0.0
The NuGet Team does not provide support for this client. Please contact its maintainers for support.
此库主要用于在使用EntityFramework查询时做一些表达式相关扩展
- 我的项目中,平常都会将EF的一些查询定义出来,如下所示:
public static Expression<Func<EquipmentInfo, SimpleEquipmentInfo>> SimpleEquipmentInfoExpression = s => new SimpleEquipmentInfo
{
Id = s.Id,
Name = s.Name
};
- 当我进行查询时:
_context.EquipmentInfo.Select(SimpleEquipmentInfoExpression).ToList();
- 我的当前做法是这样,可以复用一些表达式,不需要每次都写同样的表达式。
- 但是我又遇到了其他的问题,假设我想扩展一个属性,如下所示:
public class InfoExtCategoryName : SimpleEquipmentInfo
{
public string CategoryName { get; set; }
}
- 此时我必须再写一个表达式,如下:
public static Expression<Func<EquipmentInfo, InfoExtCategoryName>> InfoExtCategoryName
= s => new InfoExtCategoryName
{
Id = s.Id,
Name = s.Name,
CategoryName = s.EquipmentCategoryNav.Name
};
- 这样就造成了重复的代码,于是我就打算扩展一个Merge方法来解决这个问题。
- 使用方法:
- 引入命名空间
using EntityFrameworkCore.ExpressionHelp;
- 调用扩展方法
public static Expression<Func<EquipmentInfo, InfoExtCategoryName>> InfoExtCategoryNameByMerge =
SimpleEquipmentInfoExpression.Merge(s => new InfoExtCategoryName { CategoryName = s.EquipmentCategoryNav.Name});
Product | Versions Compatible and additional computed target framework versions. |
---|---|
.NET | net5.0 was computed. net5.0-windows was computed. net6.0 was computed. net6.0-android was computed. net6.0-ios was computed. net6.0-maccatalyst was computed. net6.0-macos was computed. net6.0-tvos was computed. net6.0-windows was computed. net7.0 was computed. net7.0-android was computed. net7.0-ios was computed. net7.0-maccatalyst was computed. net7.0-macos was computed. net7.0-tvos was computed. net7.0-windows was computed. net8.0 was computed. net8.0-android was computed. net8.0-browser was computed. net8.0-ios was computed. net8.0-maccatalyst was computed. net8.0-macos was computed. net8.0-tvos was computed. net8.0-windows was computed. net9.0 was computed. net9.0-android was computed. net9.0-browser was computed. net9.0-ios was computed. net9.0-maccatalyst was computed. net9.0-macos was computed. net9.0-tvos was computed. net9.0-windows was computed. net10.0 was computed. net10.0-android was computed. net10.0-browser was computed. net10.0-ios was computed. net10.0-maccatalyst was computed. net10.0-macos was computed. net10.0-tvos was computed. net10.0-windows was computed. |
.NET Core | netcoreapp3.1 is compatible. |
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.
-
.NETCoreApp 3.1
- No dependencies.
NuGet packages
This package is not used by any NuGet packages.
GitHub repositories
This package is not used by any popular GitHub repositories.
Version | Downloads | Last Updated |
---|---|---|
1.0.0 | 375 | 1/30/2021 |