File: DatabaseErrorPageExtensions.cs
Web Access
Project: src\src\Middleware\Diagnostics.EntityFrameworkCore\src\Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore.csproj (Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore)
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System.Diagnostics.CodeAnalysis;
using Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore;
using Microsoft.Extensions.Options;
 
// ReSharper disable once CheckNamespace
namespace Microsoft.AspNetCore.Builder;
 
/// <summary>
/// <see cref="IApplicationBuilder"/> extension methods for the <see cref="DatabaseErrorPageMiddleware"/>.
/// </summary>
[Obsolete("This is obsolete and will be removed in a future version. Use DatabaseDeveloperPageExceptionFilter instead, see documentation at https://aka.ms/DatabaseDeveloperPageExceptionFilter.")]
public static class DatabaseErrorPageExtensions
{
    /// <summary>
    /// Captures synchronous and asynchronous database related exceptions from the pipeline that may be resolved using Entity Framework
    /// migrations. When these exceptions occur, an HTML response with details of possible actions to resolve the issue is generated.
    /// </summary>
    /// <param name="app">The <see cref="IApplicationBuilder"/> to register the middleware with.</param>
    /// <returns>The same <see cref="IApplicationBuilder"/> instance so that multiple calls can be chained.</returns>
    [Obsolete("This is obsolete and will be removed in a future version. Use DatabaseDeveloperPageExceptionFilter instead, see documentation at https://aka.ms/DatabaseDeveloperPageExceptionFilter.")]
    [RequiresDynamicCode("DbContext migrations operations are not supported with NativeAOT")]
    public static IApplicationBuilder UseDatabaseErrorPage(this IApplicationBuilder app)
    {
        ArgumentNullException.ThrowIfNull(app);
 
        return app.UseDatabaseErrorPage(new DatabaseErrorPageOptions());
    }
 
    /// <summary>
    /// Captures synchronous and asynchronous database related exceptions from the pipeline that may be resolved using Entity Framework
    /// migrations. When these exceptions occur, an HTML response with details of possible actions to resolve the issue is generated.
    /// </summary>
    /// <param name="app">The <see cref="IApplicationBuilder"/> to register the middleware with.</param>
    /// <param name="options">A <see cref="DatabaseErrorPageOptions"/> that specifies options for the middleware.</param>
    /// <returns>The same <see cref="IApplicationBuilder"/> instance so that multiple calls can be chained.</returns>
    [Obsolete("This is obsolete and will be removed in a future version. Use DatabaseDeveloperPageExceptionFilter instead, see documentation at https://aka.ms/DatabaseDeveloperPageExceptionFilter.")]
    [RequiresDynamicCode("DbContext migrations operations are not supported with NativeAOT")]
    public static IApplicationBuilder UseDatabaseErrorPage(
        this IApplicationBuilder app, DatabaseErrorPageOptions options)
    {
        ArgumentNullException.ThrowIfNull(app);
        ArgumentNullException.ThrowIfNull(options);
 
        app = app.UseMiddleware<DatabaseErrorPageMiddleware>(Options.Create(options));
 
        app.UseMigrationsEndPoint(new MigrationsEndPointOptions
        {
            Path = options.MigrationsEndPointPath
        });
 
        return app;
    }
}