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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
#nullable enable
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
namespace Microsoft.AspNetCore.Mvc.ModelBinding.Binders;
/// <summary>
/// A <see cref="IModelBinderProvider"/> for types deriving from <see cref="Enum"/>.
/// </summary>
public class EnumTypeModelBinderProvider : IModelBinderProvider
{
/// <summary>
/// Initializes a new instance of <see cref="EnumTypeModelBinderProvider"/>.
/// </summary>
/// <param name="options">The <see cref="MvcOptions"/>.</param>
/// <remarks>The <paramref name="options"/> parameter is currently ignored.</remarks>
public EnumTypeModelBinderProvider(MvcOptions options)
{
}
/// <inheritdoc />
public IModelBinder? GetBinder(ModelBinderProviderContext context)
{
ArgumentNullException.ThrowIfNull(context);
if (context.Metadata.IsEnum)
{
var loggerFactory = context.Services.GetRequiredService<ILoggerFactory>();
return new EnumTypeModelBinder(
suppressBindingUndefinedValueToEnumType: true,
context.Metadata.UnderlyingOrModelType,
loggerFactory);
}
return null;
}
}
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