66 lines
2.0 KiB
C#
66 lines
2.0 KiB
C#
// Copyright (c) .NET Foundation. All rights reserved.
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// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
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using System;
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using System.Collections.Generic;
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using System.Globalization;
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namespace Microsoft.AspNetCore.Mvc.ModelBinding
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{
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public sealed class SimpleValueProvider : Dictionary<string, object>, IValueProvider
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{
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private readonly CultureInfo _culture;
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public SimpleValueProvider()
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: this(null)
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{
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}
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public SimpleValueProvider(CultureInfo culture)
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: base(StringComparer.OrdinalIgnoreCase)
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{
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_culture = culture ?? CultureInfo.InvariantCulture;
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}
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public bool ContainsPrefix(string prefix)
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{
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foreach (string key in Keys)
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{
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if (ModelStateDictionary.StartsWithPrefix(prefix, key))
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{
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return true;
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}
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}
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return false;
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}
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public ValueProviderResult GetValue(string key)
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{
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object rawValue;
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if (TryGetValue(key, out rawValue))
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{
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if (rawValue != null && rawValue.GetType().IsArray)
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{
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var array = (Array)rawValue;
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var stringValues = new string[array.Length];
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for (var i = 0; i < array.Length; i++)
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{
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stringValues[i] = array.GetValue(i) as string ?? Convert.ToString(array.GetValue(i), _culture);
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}
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return new ValueProviderResult(stringValues, _culture);
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}
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else
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{
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var stringValue = rawValue as string ?? Convert.ToString(rawValue, _culture) ?? string.Empty;
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return new ValueProviderResult(stringValue, _culture);
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}
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}
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return ValueProviderResult.None;
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}
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}
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}
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