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section added for custom configuration provider for .net 6 (#23247) 

* section added for custom configuration provider for .net 6

* add sample snippet to EfconfigSample folder

* EFConfigurationSource.cs

* Delete EFConfigurationSource .cs

Co-authored-by: Rick Anderson <3605364+Rick-Anderson@users.noreply.github.com>
pull/23250/head
Fiyaz Bin Hasan 2021-09-09 20:02:18 +06:00 committed by GitHub
parent c0cfbacdef
commit 0dc67fea32
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4 changed files with 18 additions and 20 deletions
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25
aspnetcore/fundamentals/configuration/index.md
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@ -726,6 +726,7 @@ Index: 5 Value: value5
```
Custom configuration providers aren't required to implement array binding.
-->
## Custom configuration provider
@ -741,47 +742,35 @@ Define an `EFConfigurationValue` entity for storing configuration values in the
*Models/EFConfigurationValue.cs*:
[!code-csharp[](index/samples/3.x/ConfigurationSample/Models/EFConfigurationValue.cs?name=snippet1)]
[!code-csharp[](index/samples/6.x/EfconfigSample/Models/EFConfigurationValue.cs?name=snippet1)]
Add an `EFConfigurationContext` to store and access the configured values.
*EFConfigurationProvider/EFConfigurationContext.cs*:
[!code-csharp[](index/samples/3.x/ConfigurationSample/EFConfigurationProvider/EFConfigurationContext.cs?name=snippet1)]
[!code-csharp[](index/samples/6.x/EfconfigSample/EFConfigurationProvider/EFConfigurationContext.cs?name=snippet1)]
Create a class that implements <xref:Microsoft.Extensions.Configuration.IConfigurationSource>.
*EFConfigurationProvider/EFConfigurationSource.cs*:
[!code-csharp[](index/samples/3.x/ConfigurationSample/EFConfigurationProvider/EFConfigurationSource.cs?name=snippet1)]
[!code-csharp[](index/samples/6.x/EfconfigSample/EFConfigurationProvider/EFConfigurationSource.cs?name=snippet1)]
Create the custom configuration provider by inheriting from <xref:Microsoft.Extensions.Configuration.ConfigurationProvider>. The configuration provider initializes the database when it's empty. Since configuration keys are case-insensitive, the dictionary used to initialize the database is created with the case-insensitive comparer ([StringComparer.OrdinalIgnoreCase](xref:System.StringComparer.OrdinalIgnoreCase)).
*EFConfigurationProvider/EFConfigurationProvider.cs*:
[!code-csharp[](index/samples/3.x/ConfigurationSample/EFConfigurationProvider/EFConfigurationProvider.cs?name=snippet1)]
[!code-csharp[](index/samples/6.x/EfconfigSample/EFConfigurationProvider/EFConfigurationProvider.cs?name=snippet1)]
An `AddEFConfiguration` extension method permits adding the configuration source to a `ConfigurationBuilder`.
*Extensions/EntityFrameworkExtensions.cs*:
[!code-csharp[](index/samples/3.x/ConfigurationSample/Extensions/EntityFrameworkExtensions.cs?name=snippet1)]
[!code-csharp[](index/samples/6.x/EfconfigSample/Extensions/EntityFrameworkExtensions.cs?name=snippet1)]
The following code shows how to use the custom `EFConfigurationProvider` in *Program.cs*:
[!code-csharp[](index/samples_snippets/3.x/ConfigurationSample/Program.cs?highlight=7-8)]
<a name="acs"></a>
## Access configuration in Startup
The following code displays configuration data in `Startup` methods:
[!code-csharp[](index/samples/3.x/ConfigSample/StartupKey.cs?name=snippet&highlight=13,18)]
For an example of accessing configuration using startup convenience methods, see [App startup: Convenience methods](xref:fundamentals/startup#convenience-methods).
-->
[!code-csharp[](index/samples_snippets/6.x/EfconfigSample/Program.cs?highlight=5-6)]
## Access configuration in Razor Pages

2
aspnetcore/fundamentals/configuration/index/samples/6.x/EFconfigSample/EFConfigurationProvider/EFConfigurationContext.cs
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@ -10,6 +10,6 @@ public class EFConfigurationContext : DbContext
{
}
public DbSet<EFConfigurationValue>? Values => Set<EFConfigurationValue>();
public DbSet<EFConfigurationValue> Values => Set<EFConfigurationValue>();
}
#endregion

1
aspnetcore/fundamentals/configuration/index/samples/6.x/EFconfigSample/EFConfigurationProvider/EFConfigurationSource .cs → aspnetcore/fundamentals/configuration/index/samples/6.x/EFconfigSample/EFConfigurationProvider/EFConfigurationSource.cs
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@ -1,4 +1,3 @@

using Microsoft.EntityFrameworkCore;
namespace EFConfigSample;

10
aspnetcore/fundamentals/configuration/index/samples_snippets/6.x/EfconfigSample/Program.cs 100644
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@ -0,0 +1,10 @@
//using Microsoft.EntityFrameworkCore;
var builder = WebApplication.CreateBuilder(args);
builder.Configuration.AddEFConfiguration(
opt => opt.UseInMemoryDatabase("InMemoryDb"));
var app = builder.Build();
app.Run();