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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.
using Microsoft.AspNetCore.Mvc.RazorPages;
using Microsoft.AspNetCore.Mvc.RazorPages.Infrastructure;
namespace Microsoft.AspNetCore.Mvc.Filters;
/// <summary>
/// A context for page filters, used specifically in
/// <see cref="IPageFilter.OnPageHandlerSelected(PageHandlerSelectedContext)"/> and
/// <see cref="IAsyncPageFilter.OnPageHandlerSelectionAsync(PageHandlerSelectedContext)"/>.
/// </summary>
public class PageHandlerSelectedContext : FilterContext
{
/// <summary>
/// Creates a new instance of <see cref="PageHandlerExecutedContext"/>.
/// </summary>
/// <param name="pageContext">The <see cref="PageContext"/> associated with the current request.</param>
/// <param name="filters">The set of filters associated with the page.</param>
/// <param name="handlerInstance">The handler instance associated with the page.</param>
public PageHandlerSelectedContext(
PageContext pageContext,
IList<IFilterMetadata> filters,
object handlerInstance)
: base(pageContext, filters)
{
ArgumentNullException.ThrowIfNull(handlerInstance);
HandlerInstance = handlerInstance;
}
/// <summary>
/// Gets the descriptor associated with the current page.
/// </summary>
public new virtual CompiledPageActionDescriptor ActionDescriptor =>
(CompiledPageActionDescriptor)base.ActionDescriptor;
/// <summary>
/// Gets or sets the descriptor for the handler method about to be invoked.
/// </summary>
public virtual HandlerMethodDescriptor? HandlerMethod { get; set; }
/// <summary>
/// Gets the object instance containing the handler method.
/// </summary>
public virtual object HandlerInstance { get; }
}
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