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begun sample about connection strings; to be finished

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EFCore3_Reforged
Marc CHEVALDONNE 6 years ago
parent b47b8956f2
commit a0b861dd73
8 changed files with 144 additions and 2 deletions
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29
Exemples.sln
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@ -539,6 +539,13 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ex_042_012_EF_CF_Many_to_Ma
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@ -4495,6 +4502,26 @@ Global
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{097B0926-6663-4B7E-BBBE-DAA7EE278C7C}.Debug|x64.ActiveCfg = Debug|Any CPU
{097B0926-6663-4B7E-BBBE-DAA7EE278C7C}.Debug|x64.Build.0 = Debug|Any CPU
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{097B0926-6663-4B7E-BBBE-DAA7EE278C7C}.Debug|x86.Build.0 = Debug|Any CPU
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{097B0926-6663-4B7E-BBBE-DAA7EE278C7C}.Release|ARM.Build.0 = Release|Any CPU
{097B0926-6663-4B7E-BBBE-DAA7EE278C7C}.Release|ARM64.ActiveCfg = Release|Any CPU
{097B0926-6663-4B7E-BBBE-DAA7EE278C7C}.Release|ARM64.Build.0 = Release|Any CPU
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10
p08_BDD_EntityFramework/ex_041_001_ConnectionStrings/Nounours.cs
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@ -0,0 +1,10 @@
using System;
namespace ex_041_001_ConnectionStrings
{
class Nounours
{
public int Id { get; set; }
public string Nom { get; set; }
}
}

34
p08_BDD_EntityFramework/ex_041_001_ConnectionStrings/Program.cs
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@ -0,0 +1,34 @@
using System;
namespace ex_041_001_ConnectionStrings
{
class Program
{
static void Main(string[] args)
{
Nounours chewie = new Nounours { Nom = "Chewbacca" };
Nounours yoda = new Nounours { Nom = "Yoda" };
Nounours ewok = new Nounours { Nom = "Ewok" };
//using (var context = new SqlServerContext())
//{
// // Crée des nounours et les insère dans la base
// Console.WriteLine("Creates and inserts new Nounours");
// context.Add(chewie);
// context.Add(yoda);
// context.Add(ewok);
// context.SaveChanges();
//}
using (var context = new SQLiteContext())
{
// Crée des nounours et les insère dans la base
Console.WriteLine("Creates and inserts new Nounours");
context.Add(chewie);
context.Add(yoda);
context.Add(ewok);
context.SaveChanges();
}
}
}
}

17
p08_BDD_EntityFramework/ex_041_001_ConnectionStrings/ReadMe.md
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@ -0,0 +1,17 @@
# ex_041_001_ConnectionStrings
Cet exemple a pour but de présenter les chaîne de connexion (*connection strings*).
Servent à se connecter à une base de données
diffèrent en fonction des providers
parfois, elles nécessitent login/pwd_
dans l'exemple :
2 providers
pour sqlite, il faut rajouter les nugets, le chemin du starting working directory
on peut observer le contenu avec DB browser : https://sqlitebrowser.org/dl/
todo : faire fonctionner avec les deux providers
préciser la différence pour les migrations
dotnet ef migrations add ex_041_001_ConnectionStrings --context SQLiteContext
dotnet ef database update --context SQLiteContext

15
p08_BDD_EntityFramework/ex_041_001_ConnectionStrings/SQLiteContext.cs
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@ -0,0 +1,15 @@
using Microsoft.EntityFrameworkCore;
using System;
using System.Collections.Generic;
using System.Text;
namespace ex_041_001_ConnectionStrings
{
class SQLiteContext : DbContext
{
public DbSet<Nounours> Nounours { get; set; }
protected override void OnConfiguring(DbContextOptionsBuilder options)
=> options.UseSqlite($"Data Source=Nounours.db");
}
}

12
p08_BDD_EntityFramework/ex_041_001_ConnectionStrings/SqlServerContext.cs
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@ -0,0 +1,12 @@
using Microsoft.EntityFrameworkCore;
namespace ex_041_001_ConnectionStrings
{
class SqlServerContext : DbContext
{
public DbSet<Nounours> Nounours { get; set; }
protected override void OnConfiguring(DbContextOptionsBuilder options)
=> options.UseSqlServer(@"Server=(localdb)\mssqllocaldb;Database=ex_041_001_ConnectionStrings.Nounours.mdf;Trusted_Connection=True;");
}
}

19
p08_BDD_EntityFramework/ex_041_001_ConnectionStrings/ex_041_001_ConnectionStrings.csproj
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@ -0,0 +1,19 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>netcoreapp3.0</TargetFramework>
<StartWorkingDirectory>$(MSBuildProjectDirectory)</StartWorkingDirectory>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="Microsoft.EntityFrameworkCore" Version="3.1.0" />
<PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="3.1.0" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="3.1.0" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite.Core" Version="3.1.0" />
<PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer.Design" Version="1.1.6" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="3.1.0">
<PrivateAssets>all</PrivateAssets>
<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
</PackageReference>
</ItemGroup>
</Project>

10
p08_BDD_EntityFramework/temp.md
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@ -1,8 +1,14 @@
#### to do
##### fundamentals (41)
* connection strings
* connection resiliency
* testing => sqlite, inmemory
* exemple avec une connection string dans OnConfiguring
* exemple avec une connection string dans AppConfig (WPF)
* exemple avec une connection string appsettings.json (ASP.NET Core)
* exemple avec UWP ?
* connection resiliency ?
* testing
* SQLite in memory
* InMemory
* configuring a dbcontext ?
* nullable reference types => navigating (include, theninclude)
##### creating a model (42)

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