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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 System.Globalization;
namespace Microsoft.AspNetCore.Mvc.ModelBinding;
/// <summary>
/// A <see cref="IValueProviderFactory"/> that creates <see cref="IValueProvider"/> instances that
/// read values from the request query-string.
/// </summary>
public class QueryStringValueProviderFactory : IValueProviderFactory
{
/// <inheritdoc />
public Task CreateValueProviderAsync(ValueProviderFactoryContext context)
{
ArgumentNullException.ThrowIfNull(context);
var query = context.ActionContext.HttpContext.Request.Query;
if (query != null && query.Count > 0)
{
var valueProvider = new QueryStringValueProvider(
BindingSource.Query,
query,
CultureInfo.InvariantCulture);
context.ValueProviders.Add(valueProvider);
}
return Task.CompletedTask;
}
}
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