Add ability to specify culture and format

This lets us specify the associations between the HTML5 field types and
these settings.

src/Components/Components/ref/Microsoft.AspNetCore.Components.netstandard2.0.cs

@@ -18,10 +18,10 @@ namespace Microsoft.AspNetCore.Components
     }
     [Microsoft.AspNetCore.Components.BindElementAttribute("select", null, "value", "onchange")]
     [Microsoft.AspNetCore.Components.BindElementAttribute("textarea", null, "value", "onchange")]
-    [Microsoft.AspNetCore.Components.BindInputElementAttribute("checkbox", null, "checked", "onchange")]
+    [Microsoft.AspNetCore.Components.BindInputElementAttribute("checkbox", null, "checked", "onchange", false, null)]
-    [Microsoft.AspNetCore.Components.BindInputElementAttribute("text", null, "value", "onchange")]
+    [Microsoft.AspNetCore.Components.BindInputElementAttribute("text", null, "value", "onchange", false, null)]
-    [Microsoft.AspNetCore.Components.BindInputElementAttribute(null, "value", "value", "onchange")]
+    [Microsoft.AspNetCore.Components.BindInputElementAttribute(null, "value", "value", "onchange", false, null)]
-    [Microsoft.AspNetCore.Components.BindInputElementAttribute(null, null, "value", "onchange")]
+    [Microsoft.AspNetCore.Components.BindInputElementAttribute(null, null, "value", "onchange", false, null)]
     public static partial class BindAttributes
     {
     }
@@ -84,8 +84,10 @@ namespace Microsoft.AspNetCore.Components
     [System.AttributeUsageAttribute(System.AttributeTargets.Class, AllowMultiple=true, Inherited=true)]
     public sealed partial class BindInputElementAttribute : System.Attribute
     {
-        public BindInputElementAttribute(string type, string suffix, string valueAttribute, string changeAttribute) { }
+        public BindInputElementAttribute(string type, string suffix, string valueAttribute, string changeAttribute, bool isInvariantCulture, string format) { }
         public string ChangeAttribute { [System.Runtime.CompilerServices.CompilerGeneratedAttribute]get { throw null; } }
+        public string Format { [System.Runtime.CompilerServices.CompilerGeneratedAttribute]get { throw null; } }
+        public bool IsInvariantCulture { [System.Runtime.CompilerServices.CompilerGeneratedAttribute]get { throw null; } }
         public string Suffix { [System.Runtime.CompilerServices.CompilerGeneratedAttribute]get { throw null; } }
         public string Type { [System.Runtime.CompilerServices.CompilerGeneratedAttribute]get { throw null; } }
         public string ValueAttribute { [System.Runtime.CompilerServices.CompilerGeneratedAttribute]get { throw null; } }

src/Components/Components/src/BindAttributes.cs

@@ -13,14 +13,14 @@ namespace Microsoft.AspNetCore.Components
     
     // Handles cases like <input @bind="..." /> - this is a fallback and will be ignored
     // when a specific type attribute is applied.
-    [BindInputElement(null, null, "value", "onchange")]
+    [BindInputElement(null, null, "value", "onchange", isInvariantCulture: false, format: null)]
 
     // Handles cases like <input @bind-value="..." /> - this is a fallback and will be ignored
     // when a specific type attribute is applied.
-    [BindInputElement(null, "value", "value", "onchange")]
+    [BindInputElement(null, "value", "value", "onchange", isInvariantCulture: false, format: null)]
 
-    [BindInputElement("checkbox", null, "checked", "onchange")]
+    [BindInputElement("checkbox", null, "checked", "onchange", isInvariantCulture: false, format: null)]
-    [BindInputElement("text", null, "value", "onchange")]
+    [BindInputElement("text", null, "value", "onchange", isInvariantCulture: false, format: null)]
 
     [BindElement("select", null, "value", "onchange")]
     [BindElement("textarea", null, "value", "onchange")]

src/Components/Components/src/BindInputElementAttribute.cs

@@ -1,7 +1,8 @@
-// Copyright (c) .NET Foundation. All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
+using System.Globalization;
 
 namespace Microsoft.AspNetCore.Components
 {
@@ -18,7 +19,13 @@ namespace Microsoft.AspNetCore.Components
         /// <param name="suffix">The suffix value.</param>
         /// <param name="valueAttribute">The name of the value attribute to be bound.</param>
         /// <param name="changeAttribute">The name of an attribute that will register an associated change event.</param>
-        public BindInputElementAttribute(string type, string suffix, string valueAttribute, string changeAttribute)
+        /// <param name="isInvariantCulture">
+        /// Determines whether binding will use <see cref="CultureInfo.InvariantCulture" /> or <see cref="CultureInfo.CurrentCulture"/>.
+        /// </param>
+        /// <param name="format">
+        /// An optional format to use when converting values. 
+        /// </param>
+        public BindInputElementAttribute(string type, string suffix, string valueAttribute, string changeAttribute, bool isInvariantCulture, string format)
         {
             if (valueAttribute == null)
             {
@@ -34,6 +41,8 @@ namespace Microsoft.AspNetCore.Components
             Suffix = suffix;
             ValueAttribute = valueAttribute;
             ChangeAttribute = changeAttribute;
+            IsInvariantCulture = isInvariantCulture;
+            Format = format;
         }
 
         /// <summary>
@@ -55,5 +64,16 @@ namespace Microsoft.AspNetCore.Components
         /// Gets the name of an attribute that will register an associated change event.
         /// </summary>
         public string ChangeAttribute { get; }
+
+        /// <summary>
+        /// Gets a value that determines whether binding will use <see cref="CultureInfo.InvariantCulture" /> or
+        /// <see cref="CultureInfo.CurrentCulture"/>.
+        /// </summary>
+        public bool IsInvariantCulture { get; }
+
+        /// <summary>
+        /// Gets an optional format to use when converting values.
+        /// </summary>
+        public string Format { get; }
     }
 }