Compare commits
5 Commits
| Author | SHA1 | Date |
|---|---|---|
jason-zhu
|
2fe2761d0b | |
 Jason Zhu
|
d9e8bf8553 | |
|
Jason Zhu
|
b851fd937a | |
|
Jason Zhu
|
4e99e8c92b | |
|
Jason Zhu
|
8945220f80 |
|
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@ -0,0 +1,455 @@
|
|||
# File created using '.gitignore Generator' for Visual Studio Code: https://bit.ly/vscode-gig
|
||||
|
||||
# Created by https://www.toptal.com/developers/gitignore/api/windows,visualstudiocode,dotnetcore,visualstudio
|
||||
# Edit at https://www.toptal.com/developers/gitignore?templates=windows,visualstudiocode,dotnetcore,visualstudio
|
||||
|
||||
### DotnetCore ###
|
||||
# .NET Core build folders
|
||||
bin/
|
||||
obj/
|
||||
|
||||
# Common node modules locations
|
||||
/node_modules
|
||||
/wwwroot/node_modules
|
||||
|
||||
### VisualStudioCode ###
|
||||
.vscode/*
|
||||
!.vscode/settings.json
|
||||
!.vscode/tasks.json
|
||||
!.vscode/launch.json
|
||||
!.vscode/extensions.json
|
||||
!.vscode/*.code-snippets
|
||||
|
||||
# Local History for Visual Studio Code
|
||||
.history/
|
||||
|
||||
# Built Visual Studio Code Extensions
|
||||
*.vsix
|
||||
|
||||
### VisualStudioCode Patch ###
|
||||
# Ignore all local history of files
|
||||
.history
|
||||
.ionide
|
||||
|
||||
# Support for Project snippet scope
|
||||
|
||||
### Windows ###
|
||||
# Windows thumbnail cache files
|
||||
Thumbs.db
|
||||
Thumbs.db:encryptable
|
||||
ehthumbs.db
|
||||
ehthumbs_vista.db
|
||||
|
||||
# Dump file
|
||||
*.stackdump
|
||||
|
||||
# Folder config file
|
||||
[Dd]esktop.ini
|
||||
|
||||
# Recycle Bin used on file shares
|
||||
$RECYCLE.BIN/
|
||||
|
||||
# Windows Installer files
|
||||
*.cab
|
||||
*.msi
|
||||
*.msix
|
||||
*.msm
|
||||
*.msp
|
||||
|
||||
# Windows shortcuts
|
||||
*.lnk
|
||||
|
||||
### VisualStudio ###
|
||||
## Ignore Visual Studio temporary files, build results, and
|
||||
## files generated by popular Visual Studio add-ons.
|
||||
##
|
||||
## Get latest from https://github.com/github/gitignore/blob/main/VisualStudio.gitignore
|
||||
|
||||
# User-specific files
|
||||
*.rsuser
|
||||
*.suo
|
||||
*.user
|
||||
*.userosscache
|
||||
*.sln.docstates
|
||||
|
||||
# User-specific files (MonoDevelop/Xamarin Studio)
|
||||
*.userprefs
|
||||
|
||||
# Mono auto generated files
|
||||
mono_crash.*
|
||||
|
||||
# Build results
|
||||
[Dd]ebug/
|
||||
[Dd]ebugPublic/
|
||||
[Rr]elease/
|
||||
[Rr]eleases/
|
||||
x64/
|
||||
x86/
|
||||
[Ww][Ii][Nn]32/
|
||||
[Aa][Rr][Mm]/
|
||||
[Aa][Rr][Mm]64/
|
||||
bld/
|
||||
[Bb]in/
|
||||
[Oo]bj/
|
||||
[Ll]og/
|
||||
[Ll]ogs/
|
||||
|
||||
# Visual Studio 2015/2017 cache/options directory
|
||||
.vs/
|
||||
# Uncomment if you have tasks that create the project's static files in wwwroot
|
||||
#wwwroot/
|
||||
|
||||
# Visual Studio 2017 auto generated files
|
||||
Generated\ Files/
|
||||
|
||||
# MSTest test Results
|
||||
[Tt]est[Rr]esult*/
|
||||
[Bb]uild[Ll]og.*
|
||||
|
||||
# NUnit
|
||||
*.VisualState.xml
|
||||
TestResult.xml
|
||||
nunit-*.xml
|
||||
|
||||
# Build Results of an ATL Project
|
||||
[Dd]ebugPS/
|
||||
[Rr]eleasePS/
|
||||
dlldata.c
|
||||
|
||||
# Benchmark Results
|
||||
BenchmarkDotNet.Artifacts/
|
||||
|
||||
# .NET Core
|
||||
project.lock.json
|
||||
project.fragment.lock.json
|
||||
artifacts/
|
||||
|
||||
# ASP.NET Scaffolding
|
||||
ScaffoldingReadMe.txt
|
||||
|
||||
# StyleCop
|
||||
StyleCopReport.xml
|
||||
|
||||
# Files built by Visual Studio
|
||||
*_i.c
|
||||
*_p.c
|
||||
*_h.h
|
||||
*.ilk
|
||||
*.meta
|
||||
*.obj
|
||||
*.iobj
|
||||
*.pch
|
||||
*.pdb
|
||||
*.ipdb
|
||||
*.pgc
|
||||
*.pgd
|
||||
*.rsp
|
||||
*.sbr
|
||||
*.tlb
|
||||
*.tli
|
||||
*.tlh
|
||||
*.tmp
|
||||
*.tmp_proj
|
||||
*_wpftmp.csproj
|
||||
*.log
|
||||
*.tlog
|
||||
*.vspscc
|
||||
*.vssscc
|
||||
.builds
|
||||
*.pidb
|
||||
*.svclog
|
||||
*.scc
|
||||
|
||||
# Chutzpah Test files
|
||||
_Chutzpah*
|
||||
|
||||
# Visual C++ cache files
|
||||
ipch/
|
||||
*.aps
|
||||
*.ncb
|
||||
*.opendb
|
||||
*.opensdf
|
||||
*.sdf
|
||||
*.cachefile
|
||||
*.VC.db
|
||||
*.VC.VC.opendb
|
||||
|
||||
# Visual Studio profiler
|
||||
*.psess
|
||||
*.vsp
|
||||
*.vspx
|
||||
*.sap
|
||||
|
||||
# Visual Studio Trace Files
|
||||
*.e2e
|
||||
|
||||
# TFS 2012 Local Workspace
|
||||
$tf/
|
||||
|
||||
# Guidance Automation Toolkit
|
||||
*.gpState
|
||||
|
||||
# ReSharper is a .NET coding add-in
|
||||
_ReSharper*/
|
||||
*.[Rr]e[Ss]harper
|
||||
*.DotSettings.user
|
||||
|
||||
# TeamCity is a build add-in
|
||||
_TeamCity*
|
||||
|
||||
# DotCover is a Code Coverage Tool
|
||||
*.dotCover
|
||||
|
||||
# AxoCover is a Code Coverage Tool
|
||||
.axoCover/*
|
||||
!.axoCover/settings.json
|
||||
|
||||
# Coverlet is a free, cross platform Code Coverage Tool
|
||||
coverage*.json
|
||||
coverage*.xml
|
||||
coverage*.info
|
||||
|
||||
# Visual Studio code coverage results
|
||||
*.coverage
|
||||
*.coveragexml
|
||||
|
||||
# NCrunch
|
||||
_NCrunch_*
|
||||
.*crunch*.local.xml
|
||||
nCrunchTemp_*
|
||||
|
||||
# MightyMoose
|
||||
*.mm.*
|
||||
AutoTest.Net/
|
||||
|
||||
# Web workbench (sass)
|
||||
.sass-cache/
|
||||
|
||||
# Installshield output folder
|
||||
[Ee]xpress/
|
||||
|
||||
# DocProject is a documentation generator add-in
|
||||
DocProject/buildhelp/
|
||||
DocProject/Help/*.HxT
|
||||
DocProject/Help/*.HxC
|
||||
DocProject/Help/*.hhc
|
||||
DocProject/Help/*.hhk
|
||||
DocProject/Help/*.hhp
|
||||
DocProject/Help/Html2
|
||||
DocProject/Help/html
|
||||
|
||||
# Click-Once directory
|
||||
publish/
|
||||
|
||||
# Publish Web Output
|
||||
*.[Pp]ublish.xml
|
||||
*.azurePubxml
|
||||
# Note: Comment the next line if you want to checkin your web deploy settings,
|
||||
# but database connection strings (with potential passwords) will be unencrypted
|
||||
*.pubxml
|
||||
*.publishproj
|
||||
|
||||
# Microsoft Azure Web App publish settings. Comment the next line if you want to
|
||||
# checkin your Azure Web App publish settings, but sensitive information contained
|
||||
# in these scripts will be unencrypted
|
||||
PublishScripts/
|
||||
|
||||
# NuGet Packages
|
||||
*.nupkg
|
||||
# NuGet Symbol Packages
|
||||
*.snupkg
|
||||
# The packages folder can be ignored because of Package Restore
|
||||
**/[Pp]ackages/*
|
||||
# except build/, which is used as an MSBuild target.
|
||||
!**/[Pp]ackages/build/
|
||||
# Uncomment if necessary however generally it will be regenerated when needed
|
||||
#!**/[Pp]ackages/repositories.config
|
||||
# NuGet v3's project.json files produces more ignorable files
|
||||
*.nuget.props
|
||||
*.nuget.targets
|
||||
|
||||
# Microsoft Azure Build Output
|
||||
csx/
|
||||
*.build.csdef
|
||||
|
||||
# Microsoft Azure Emulator
|
||||
ecf/
|
||||
rcf/
|
||||
|
||||
# Windows Store app package directories and files
|
||||
AppPackages/
|
||||
BundleArtifacts/
|
||||
Package.StoreAssociation.xml
|
||||
_pkginfo.txt
|
||||
*.appx
|
||||
*.appxbundle
|
||||
*.appxupload
|
||||
|
||||
# Visual Studio cache files
|
||||
# files ending in .cache can be ignored
|
||||
*.[Cc]ache
|
||||
# but keep track of directories ending in .cache
|
||||
!?*.[Cc]ache/
|
||||
|
||||
# Others
|
||||
ClientBin/
|
||||
~$*
|
||||
*~
|
||||
*.dbmdl
|
||||
*.dbproj.schemaview
|
||||
*.jfm
|
||||
*.pfx
|
||||
*.publishsettings
|
||||
orleans.codegen.cs
|
||||
|
||||
# Including strong name files can present a security risk
|
||||
# (https://github.com/github/gitignore/pull/2483#issue-259490424)
|
||||
#*.snk
|
||||
|
||||
# Since there are multiple workflows, uncomment next line to ignore bower_components
|
||||
# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
|
||||
#bower_components/
|
||||
|
||||
# RIA/Silverlight projects
|
||||
Generated_Code/
|
||||
|
||||
# Backup & report files from converting an old project file
|
||||
# to a newer Visual Studio version. Backup files are not needed,
|
||||
# because we have git ;-)
|
||||
_UpgradeReport_Files/
|
||||
Backup*/
|
||||
UpgradeLog*.XML
|
||||
UpgradeLog*.htm
|
||||
ServiceFabricBackup/
|
||||
*.rptproj.bak
|
||||
|
||||
# SQL Server files
|
||||
*.mdf
|
||||
*.ldf
|
||||
*.ndf
|
||||
|
||||
# Business Intelligence projects
|
||||
*.rdl.data
|
||||
*.bim.layout
|
||||
*.bim_*.settings
|
||||
*.rptproj.rsuser
|
||||
*- [Bb]ackup.rdl
|
||||
*- [Bb]ackup ([0-9]).rdl
|
||||
*- [Bb]ackup ([0-9][0-9]).rdl
|
||||
|
||||
# Microsoft Fakes
|
||||
FakesAssemblies/
|
||||
|
||||
# GhostDoc plugin setting file
|
||||
*.GhostDoc.xml
|
||||
|
||||
# Node.js Tools for Visual Studio
|
||||
.ntvs_analysis.dat
|
||||
node_modules/
|
||||
|
||||
# Visual Studio 6 build log
|
||||
*.plg
|
||||
|
||||
# Visual Studio 6 workspace options file
|
||||
*.opt
|
||||
|
||||
# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
|
||||
*.vbw
|
||||
|
||||
# Visual Studio 6 auto-generated project file (contains which files were open etc.)
|
||||
*.vbp
|
||||
|
||||
# Visual Studio 6 workspace and project file (working project files containing files to include in project)
|
||||
*.dsw
|
||||
*.dsp
|
||||
|
||||
# Visual Studio 6 technical files
|
||||
|
||||
# Visual Studio LightSwitch build output
|
||||
**/*.HTMLClient/GeneratedArtifacts
|
||||
**/*.DesktopClient/GeneratedArtifacts
|
||||
**/*.DesktopClient/ModelManifest.xml
|
||||
**/*.Server/GeneratedArtifacts
|
||||
**/*.Server/ModelManifest.xml
|
||||
_Pvt_Extensions
|
||||
|
||||
# Paket dependency manager
|
||||
.paket/paket.exe
|
||||
paket-files/
|
||||
|
||||
# FAKE - F# Make
|
||||
.fake/
|
||||
|
||||
# CodeRush personal settings
|
||||
.cr/personal
|
||||
|
||||
# Python Tools for Visual Studio (PTVS)
|
||||
__pycache__/
|
||||
*.pyc
|
||||
|
||||
# Cake - Uncomment if you are using it
|
||||
# tools/**
|
||||
# !tools/packages.config
|
||||
|
||||
# Tabs Studio
|
||||
*.tss
|
||||
|
||||
# Telerik's JustMock configuration file
|
||||
*.jmconfig
|
||||
|
||||
# BizTalk build output
|
||||
*.btp.cs
|
||||
*.btm.cs
|
||||
*.odx.cs
|
||||
*.xsd.cs
|
||||
|
||||
# OpenCover UI analysis results
|
||||
OpenCover/
|
||||
|
||||
# Azure Stream Analytics local run output
|
||||
ASALocalRun/
|
||||
|
||||
# MSBuild Binary and Structured Log
|
||||
*.binlog
|
||||
|
||||
# NVidia Nsight GPU debugger configuration file
|
||||
*.nvuser
|
||||
|
||||
# MFractors (Xamarin productivity tool) working folder
|
||||
.mfractor/
|
||||
|
||||
# Local History for Visual Studio
|
||||
.localhistory/
|
||||
|
||||
# Visual Studio History (VSHistory) files
|
||||
.vshistory/
|
||||
|
||||
# BeatPulse healthcheck temp database
|
||||
healthchecksdb
|
||||
|
||||
# Backup folder for Package Reference Convert tool in Visual Studio 2017
|
||||
MigrationBackup/
|
||||
|
||||
# Ionide (cross platform F# VS Code tools) working folder
|
||||
.ionide/
|
||||
|
||||
# Fody - auto-generated XML schema
|
||||
FodyWeavers.xsd
|
||||
|
||||
# VS Code files for those working on multiple tools
|
||||
*.code-workspace
|
||||
|
||||
# Local History for Visual Studio Code
|
||||
|
||||
# Windows Installer files from build outputs
|
||||
|
||||
# JetBrains Rider
|
||||
*.sln.iml
|
||||
|
||||
### VisualStudio Patch ###
|
||||
# Additional files built by Visual Studio
|
||||
|
||||
# End of https://www.toptal.com/developers/gitignore/api/windows,visualstudiocode,dotnetcore,visualstudio
|
||||
|
||||
# Custom rules (everything added below won't be overriden by 'Generate .gitignore File' if you use 'Update' option)
|
||||
|
||||
|
|
@ -0,0 +1,13 @@
|
|||
# Default ignored files
|
||||
/shelf/
|
||||
/workspace.xml
|
||||
# Rider ignored files
|
||||
/contentModel.xml
|
||||
/.idea.WorkingWithEFCore.iml
|
||||
/modules.xml
|
||||
/projectSettingsUpdater.xml
|
||||
# Editor-based HTTP Client requests
|
||||
/httpRequests/
|
||||
# Datasource local storage ignored files
|
||||
/dataSources/
|
||||
/dataSources.local.xml
|
||||
|
|
@ -0,0 +1,11 @@
|
|||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project version="4">
|
||||
<component name="accountSettings">
|
||||
<option name="activeRegion" value="us-east-1" />
|
||||
<option name="recentlyUsedRegions">
|
||||
<list>
|
||||
<option value="us-east-1" />
|
||||
</list>
|
||||
</option>
|
||||
</component>
|
||||
</project>
|
||||
|
|
@ -0,0 +1,12 @@
|
|||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project version="4">
|
||||
<component name="DataSourceManagerImpl" format="xml" multifile-model="true">
|
||||
<data-source source="LOCAL" name="Microsoft SQL Server - @localhost" uuid="4b4ea279-159d-49a1-9d2c-0fafe90fec40">
|
||||
<driver-ref>sqlserver.ms</driver-ref>
|
||||
<synchronize>true</synchronize>
|
||||
<jdbc-driver>com.microsoft.sqlserver.jdbc.SQLServerDriver</jdbc-driver>
|
||||
<jdbc-url>jdbc:sqlserver://localhost</jdbc-url>
|
||||
<working-dir>$ProjectFileDir$</working-dir>
|
||||
</data-source>
|
||||
</component>
|
||||
</project>
|
||||
|
|
@ -0,0 +1,4 @@
|
|||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project version="4">
|
||||
<component name="Encoding" addBOMForNewFiles="with BOM under Windows, with no BOM otherwise" />
|
||||
</project>
|
||||
|
|
@ -0,0 +1,8 @@
|
|||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project version="4">
|
||||
<component name="UserContentModel">
|
||||
<attachedFolders />
|
||||
<explicitIncludes />
|
||||
<explicitExcludes />
|
||||
</component>
|
||||
</project>
|
||||
|
|
@ -0,0 +1,6 @@
|
|||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<project version="4">
|
||||
<component name="VcsDirectoryMappings">
|
||||
<mapping directory="$PROJECT_DIR$/../.." vcs="Git" />
|
||||
</component>
|
||||
</project>
|
||||
|
|
@ -0,0 +1,25 @@
|
|||
|
||||
Microsoft Visual Studio Solution File, Format Version 12.00
|
||||
# Visual Studio Version 17
|
||||
VisualStudioVersion = 17.1.32228.430
|
||||
MinimumVisualStudioVersion = 10.0.40219.1
|
||||
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WorkingWithEFCore", "WorkingWithEFCore\WorkingWithEFCore.csproj", "{91E473E8-0889-481E-A282-22E5E38298C5}"
|
||||
EndProject
|
||||
Global
|
||||
GlobalSection(SolutionConfigurationPlatforms) = preSolution
|
||||
Debug|Any CPU = Debug|Any CPU
|
||||
Release|Any CPU = Release|Any CPU
|
||||
EndGlobalSection
|
||||
GlobalSection(ProjectConfigurationPlatforms) = postSolution
|
||||
{91E473E8-0889-481E-A282-22E5E38298C5}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
|
||||
{91E473E8-0889-481E-A282-22E5E38298C5}.Debug|Any CPU.Build.0 = Debug|Any CPU
|
||||
{91E473E8-0889-481E-A282-22E5E38298C5}.Release|Any CPU.ActiveCfg = Release|Any CPU
|
||||
{91E473E8-0889-481E-A282-22E5E38298C5}.Release|Any CPU.Build.0 = Release|Any CPU
|
||||
EndGlobalSection
|
||||
GlobalSection(SolutionProperties) = preSolution
|
||||
HideSolutionNode = FALSE
|
||||
EndGlobalSection
|
||||
GlobalSection(ExtensibilityGlobals) = postSolution
|
||||
SolutionGuid = {F5DEE077-CE4A-4177-92BB-A3BFF5115701}
|
||||
EndGlobalSection
|
||||
EndGlobal
|
||||
|
|
@ -0,0 +1,20 @@
|
|||
using System.ComponentModel.DataAnnotations.Schema; // [Column]
|
||||
|
||||
namespace Packt.Shared;
|
||||
public class Category
|
||||
{
|
||||
// these properties map to columns in the database
|
||||
public int CategoryId { get; set; }
|
||||
public string? CategoryName { get; set; }
|
||||
[Column(TypeName = "ntext")]
|
||||
public string? Description { get; set; }
|
||||
// defines a navigation property for related rows (one to many relationship with Products)
|
||||
public virtual ICollection<Product> Products { get; set; }
|
||||
|
||||
public Category()
|
||||
{
|
||||
// to enable developers to add products to a Category we must
|
||||
// initialize the navigation property to an empty collection
|
||||
Products = new HashSet<Product>();
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,49 @@
|
|||
using Microsoft.EntityFrameworkCore;
|
||||
using static System.Console;
|
||||
|
||||
namespace Packt.Shared;
|
||||
|
||||
public class Northwind : DbContext
|
||||
{
|
||||
// These properties map to tables in database
|
||||
public DbSet<Category>? Categories { get; set; }
|
||||
public DbSet<Product>? Products { get; set; }
|
||||
|
||||
protected override void OnConfiguring(
|
||||
DbContextOptionsBuilder optionsBuilder)
|
||||
{
|
||||
if (ProjectConstants.DatabaseProvider == "SQLite")
|
||||
{
|
||||
string path = Path.Combine(
|
||||
Environment.CurrentDirectory, "Northwind.db");
|
||||
WriteLine($"Using {path} database file.");
|
||||
optionsBuilder.UseSqlite($"Filename={path}");
|
||||
}
|
||||
else
|
||||
{
|
||||
string connection = "Data Source=.;" +
|
||||
"Initial Catalog=Northwind;" +
|
||||
"Integrated Security=true;" +
|
||||
"MultipleActiveResultSets=true;";
|
||||
optionsBuilder.UseSqlServer(connection);
|
||||
}
|
||||
}
|
||||
|
||||
protected override void OnModelCreating(
|
||||
ModelBuilder modelBuilder)
|
||||
{
|
||||
// example of using Fluent API instead of attributes
|
||||
// // to limit the length of a category name to 15
|
||||
modelBuilder.Entity<Category>()
|
||||
.Property(category => category.CategoryName)
|
||||
.IsRequired() // NOT NULL
|
||||
.HasMaxLength(15);
|
||||
if (ProjectConstants.DatabaseProvider == "SQLite")
|
||||
{
|
||||
// added to "fix" the lack of decimal support in SQLite
|
||||
modelBuilder.Entity<Product>()
|
||||
.Property(product => product.Cost)
|
||||
.HasConversion<double>();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,19 @@
|
|||
using System.ComponentModel.DataAnnotations;
|
||||
using System.ComponentModel.DataAnnotations.Schema;
|
||||
|
||||
namespace Packt.Shared;
|
||||
|
||||
public class Product
|
||||
{
|
||||
public int ProductId { get; set; }
|
||||
[Required] [StringLength(40)] public string ProductName { get; set; } = null!;
|
||||
[Column("UnitPrice", TypeName = "money")]
|
||||
public decimal? Cost { get; set; }
|
||||
[Column("UnitsInStock")]
|
||||
public short? Stock { get; set; }
|
||||
public bool Discontinued { get; set; }
|
||||
// these two define the foreign key relationship
|
||||
// to the Categories table
|
||||
public int CategoryId { get; set; }
|
||||
public virtual Category Category { get; set; } = null;
|
||||
}
|
||||
|
|
@ -0,0 +1,53 @@
|
|||
using Microsoft.EntityFrameworkCore;
|
||||
using Packt.Shared;
|
||||
|
||||
Console.WriteLine($"Using {ProjectConstants.DatabaseProvider} database provider.");
|
||||
QueryingCategories();
|
||||
FilteredIncludes();
|
||||
|
||||
static void QueryingCategories()
|
||||
{
|
||||
using (Northwind db = new())
|
||||
{
|
||||
Console.WriteLine("Categories and how many products they have:");
|
||||
// a query to get all categories and their related products
|
||||
IQueryable<Category>? categories = db.Categories?
|
||||
.Include(c => c.Products);
|
||||
if (categories is null)
|
||||
{
|
||||
Console.WriteLine("No categories found");
|
||||
return;
|
||||
}
|
||||
// execute query and enumerate results
|
||||
foreach (var c in categories)
|
||||
{
|
||||
Console.WriteLine($"{c.CategoryName} has {c.Products.Count} products");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void FilteredIncludes()
|
||||
{
|
||||
using (Northwind db = new())
|
||||
{
|
||||
Console.Write("Enter a minimum for units in stock: ");
|
||||
string unitsInStock = Console.ReadLine() ?? "10";
|
||||
int stock = int.Parse(unitsInStock);
|
||||
IQueryable<Category>? categories = db.Categories?
|
||||
.Include(c => c.Products.Where(p => p.Stock >= stock));
|
||||
if (categories is null)
|
||||
{
|
||||
Console.WriteLine("No categories found.");
|
||||
return;
|
||||
}
|
||||
|
||||
foreach (Category c in categories)
|
||||
{
|
||||
Console.WriteLine($"{c.CategoryName} has {c.Products.Count} products with a minimum of {stock} units in stock.");
|
||||
foreach (Product p in c.Products)
|
||||
{
|
||||
Console.WriteLine($" {p.ProductName} has {p.Stock} units in stock.");
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,5 @@
|
|||
namespace Packt.Shared;
|
||||
public class ProjectConstants
|
||||
{
|
||||
public const string DatabaseProvider = "SQLServer"; // or "SQLServer"
|
||||
}
|
||||
|
|
@ -0,0 +1,21 @@
|
|||
<Project Sdk="Microsoft.NET.Sdk">
|
||||
|
||||
<PropertyGroup>
|
||||
<OutputType>Exe</OutputType>
|
||||
<TargetFramework>net6.0</TargetFramework>
|
||||
<ImplicitUsings>enable</ImplicitUsings>
|
||||
<Nullable>enable</Nullable>
|
||||
</PropertyGroup>
|
||||
<ItemGroup>
|
||||
<PackageReference
|
||||
Include="Microsoft.EntityFrameworkCore.Sqlite"
|
||||
Version="6.0.0" />
|
||||
<PackageReference
|
||||
Include="Microsoft.EntityFrameworkCore.SqlServer"
|
||||
Version="6.0.0" />
|
||||
<None Update="Northwind.db">
|
||||
<CopyToOutputDirectory>Always</CopyToOutputDirectory>
|
||||
</None>
|
||||
</ItemGroup>
|
||||
|
||||
</Project>
|
||||
Loading…
Reference in New Issue