Refactoring

AMWD.Common.AspNetCore/ModelBinders/CustomFloatingPointModelBinderProvider.cs

@@ -0,0 +1,58 @@
+using System;
+using System.ComponentModel;
+using System.Globalization;
+using Microsoft.AspNetCore.Mvc.ModelBinding.Binders;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
+
+namespace Microsoft.AspNetCore.Mvc.ModelBinding
+{
+	/// <summary>
+	/// An <see cref="IModelBinderProvider"/> for binding <see cref="decimal"/>, <see cref="double"/>,
+	/// <see cref="float"/>, and their <see cref="Nullable{T}"/> wrappers.
+	/// Modified to set <see cref="NumberStyles"/> and <see cref="System.Globalization.CultureInfo"/>.
+	/// </summary>
+	/// <remarks>
+	/// To use this provider, insert it at the beginning of the providers list:<br/>
+	/// <code>
+	/// services.AddControllersWithViews(options =><br/>
+	/// {<br/>
+	/// 	options.ModelBinderProviders.Insert(0, new CustomFloatingPointModelBinderProvider());<br/>
+	/// });</code>
+	/// </remarks>
+	public class CustomFloatingPointModelBinderProvider : IModelBinderProvider
+	{
+		/// <summary>
+		/// Gets or sets the supported <see cref="NumberStyles"/> globally.
+		/// Default: <see cref="NumberStyles.Float"/> and <see cref="NumberStyles.AllowThousands"/>.
+		/// </summary>
+		/// <remarks>
+		/// <see cref="SimpleTypeModelBinder"/> uses <see cref="DecimalConverter"/> and similar. Those <see cref="TypeConverter"/>s default to <see cref="NumberStyles.Float"/>.
+		/// </remarks>
+		public static NumberStyles SupportedNumberStyles { get; set; } = NumberStyles.Float | NumberStyles.AllowThousands;
+
+		/// <summary>
+		/// Gets or sets the <see cref="System.Globalization.CultureInfo"/> to use while parsing globally.
+		/// Default: <see cref="CultureInfo.InvariantCulture"/>.
+		/// </summary>
+		public static CultureInfo CultureInfo { get; set; } = CultureInfo.InvariantCulture;
+
+		/// <inheritdoc />
+		public IModelBinder GetBinder(ModelBinderProviderContext context)
+		{
+			if (context == null)
+				throw new ArgumentNullException(nameof(context));
+
+			var loggerFactory = context.Services.GetRequiredService<ILoggerFactory>();
+			var modelType = context.Metadata.UnderlyingOrModelType;
+			if (modelType == typeof(decimal) ||
+				modelType == typeof(double) ||
+				modelType == typeof(float))
+			{
+				return new CustomFloatingPointModelBinder(SupportedNumberStyles, CultureInfo, loggerFactory);
+			}
+
+			return null;
+		}
+	}
+}