59 lines
2.3 KiB
C#
59 lines
2.3 KiB
C#
using System;
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using System.ComponentModel;
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using System.Globalization;
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using Microsoft.AspNetCore.Mvc.ModelBinding.Binders;
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using Microsoft.Extensions.DependencyInjection;
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using Microsoft.Extensions.Logging;
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namespace Microsoft.AspNetCore.Mvc.ModelBinding
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{
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/// <summary>
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/// An <see cref="IModelBinderProvider"/> for binding <see cref="decimal"/>, <see cref="double"/>,
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/// <see cref="float"/>, and their <see cref="Nullable{T}"/> wrappers.
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/// Modified to set <see cref="NumberStyles"/> and <see cref="System.Globalization.CultureInfo"/>.
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/// </summary>
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/// <remarks>
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/// To use this provider, insert it at the beginning of the providers list:<br/>
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/// <code>
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/// services.AddControllersWithViews(options =><br/>
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/// {<br/>
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/// options.ModelBinderProviders.Insert(0, new CustomFloatingPointModelBinderProvider());<br/>
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/// });</code>
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/// </remarks>
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public class CustomFloatingPointModelBinderProvider : IModelBinderProvider
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{
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/// <summary>
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/// Gets or sets the supported <see cref="NumberStyles"/> globally.
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/// Default: <see cref="NumberStyles.Float"/> and <see cref="NumberStyles.AllowThousands"/>.
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/// </summary>
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/// <remarks>
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/// <see cref="SimpleTypeModelBinder"/> uses <see cref="DecimalConverter"/> and similar. Those <see cref="TypeConverter"/>s default to <see cref="NumberStyles.Float"/>.
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/// </remarks>
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public static NumberStyles SupportedNumberStyles { get; set; } = NumberStyles.Float | NumberStyles.AllowThousands;
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/// <summary>
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/// Gets or sets the <see cref="System.Globalization.CultureInfo"/> to use while parsing globally.
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/// Default: <see cref="CultureInfo.InvariantCulture"/>.
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/// </summary>
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public static CultureInfo CultureInfo { get; set; } = CultureInfo.InvariantCulture;
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/// <inheritdoc />
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public IModelBinder GetBinder(ModelBinderProviderContext context)
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{
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if (context == null)
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throw new ArgumentNullException(nameof(context));
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var loggerFactory = context.Services.GetRequiredService<ILoggerFactory>();
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var modelType = context.Metadata.UnderlyingOrModelType;
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if (modelType == typeof(decimal) ||
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modelType == typeof(double) ||
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modelType == typeof(float))
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{
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return new CustomFloatingPointModelBinder(SupportedNumberStyles, CultureInfo, loggerFactory);
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}
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return null;
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}
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}
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}
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