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Document ConfigureDbContext method and AddDbContext precedence changes in EF Core 8.0 #5118

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Document ConfigureDbContext method and AddDbContext precedence changes in EF Core 8.0 #5118

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aed0fbb
Initial plan
Copilot Sep 26, 2025
3c2e6f2
Add documentation for multiple AddDbContext calls behavior in EF Core…
Copilot Sep 26, 2025
fc3ce37
Final documentation updates for AddDbContext precedence behavior
Copilot Sep 26, 2025
5d80627
Update documentation to properly document ConfigureDbContext method a…
Copilot Sep 30, 2025
c6277c3
Refine ConfigureDbContext documentation based on review feedback
Copilot Sep 30, 2025
e544d44
Apply final review feedback - update ms.date, change WARNING to NOTE,…
Copilot Sep 30, 2025
52ec51e
Move endregion tags to exclude var serviceProvider line from code sni…
Copilot Sep 30, 2025
1072ea3
Move ConfigureDbContext sample code to main project and remove separa…
Copilot Sep 30, 2025
fc950c9
Update all package references to version 9.0.0 and target framework t…
Copilot Sep 30, 2025
ce6de19
Rename ConfigureDbContextExamples class to ConfigureDbContextSample
Copilot Sep 30, 2025
6b6b41b
Move ConfigureDbContext section to end and mark as intermediate-level…
Copilot Nov 4, 2025
4bfb7de
Update ConfigureDbContext section heading and note per review feedback
Copilot Nov 4, 2025
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6 changes: 3 additions & 3 deletions entity-framework/core/dbcontext-configuration/index.md
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Expand Up @@ -112,7 +112,7 @@ Starting with EF Core 9.0, you can use <xref:Microsoft.Extensions.DependencyInje

var serviceProvider = services.BuildServiceProvider();
-->
[!code-csharp[BasicConfigureDbContext](../../../samples/core/Miscellaneous/ConfiguringDbContext/ConfigureDbContextSample/Program.cs?name=BasicConfigureDbContext)]
[!code-csharp[BasicConfigureDbContext](../../../samples/core/Miscellaneous/ConfiguringDbContext/ConfigureDbContextSample.cs?name=BasicConfigureDbContext)]

### Provider-specific configuration without connection strings

Expand All @@ -130,7 +130,7 @@ To apply provider-specific configuration you can use provider-specific configura

var serviceProvider = services.BuildServiceProvider();
-->
[!code-csharp[ProviderSpecificConfiguration](../../../samples/core/Miscellaneous/ConfiguringDbContext/ConfigureDbContextSample/Program.cs?name=ProviderSpecificConfiguration)]
[!code-csharp[ProviderSpecificConfiguration](../../../samples/core/Miscellaneous/ConfiguringDbContext/ConfigureDbContextSample.cs?name=ProviderSpecificConfiguration)]

### ConfigureDbContext and AddDbContext precedence

Expand All @@ -152,7 +152,7 @@ For non-conflicting options (like adding logging, interceptors, or other setting

var serviceProvider = services.BuildServiceProvider();
-->
[!code-csharp[ConfigurationComposition](../../../samples/core/Miscellaneous/ConfiguringDbContext/ConfigureDbContextSample/Program.cs?name=ConfigurationComposition)]
[!code-csharp[ConfigurationComposition](../../../samples/core/Miscellaneous/ConfiguringDbContext/ConfigureDbContextSample.cs?name=ConfigurationComposition)]

For conflicting options, the last configuration wins. See [breaking changes in EF Core 8.0](xref:core/what-is-new/ef-core-8.0/breaking-changes#AddDbContext) for more information about this behavior change.

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6 changes: 4 additions & 2 deletions ...ntext/ConfigureDbContextSample/Program.cs → ...ringDbContext/ConfigureDbContextSample.cs
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@@ -1,3 +1,5 @@
#nullable enable

using System;
using System.Linq;
using Microsoft.EntityFrameworkCore;
Expand All @@ -21,9 +23,9 @@ public class Blog
public string? Content { get; set; }
}

public class Program
public static class ConfigureDbContextExamples
{
public static void Main(string[] args)
public static void Run()
{
BasicConfigureDbContextExample();
ProviderSpecificConfigurationExample();
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16 changes: 0 additions & 16 deletions ...scellaneous/ConfiguringDbContext/ConfigureDbContextSample/ConfigureDbContextSample.csproj
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5 changes: 4 additions & 1 deletion samples/core/Miscellaneous/ConfiguringDbContext/ConfiguringDbContext.csproj
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Expand Up @@ -10,7 +10,10 @@
<PackageReference Include="Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore" Version="8.0.0" />
<PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="8.0.0" />
<PackageReference Include="Microsoft.AspNetCore.Identity.UI" Version="8.0.0" />
<PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="8.0.0" />
<PackageReference Include="Microsoft.EntityFrameworkCore" Version="9.0.0" />
<PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="9.0.0" />
<PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="9.0.0" />
<PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="9.0.0" />
</ItemGroup>

</Project>
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