- #JACKSON2 SERALIZATION WRITEMAPPER HOW TO#
- #JACKSON2 SERALIZATION WRITEMAPPER CODE#
- #JACKSON2 SERALIZATION WRITEMAPPER ISO#
For performance, use the existing converter if available. Public DictionaryEnumConverterInner(JsonSerializerOptions options) Private readonly JsonConverter _valueConverter Private class DictionaryEnumConverterInner : Typeof(DictionaryEnumConverterInner).MakeGenericType(īindingFlags.Instance | BindingFlags.Public, JsonConverter converter = (JsonConverter)Activator.CreateInstance( Type valueType = type.GetGenericArguments() Type keyType = type.GetGenericArguments() Public override JsonConverter CreateConverter( Return typeToConvert.GetGenericArguments().IsEnum If (typeToConvert.GetGenericTypeDefinition() != typeof(Dictionary)) Public override bool CanConvert(Type typeToConvert) Public class DictionaryTKeyEnumTValueConverter : JsonConverterFactory The inner converter gets an existing converter to handle whichever type is provided at run time for TValue. The CanConvert method returns true only for a Dictionary with two generic parameters, the first of which is an Enum type.
#JACKSON2 SERALIZATION WRITEMAPPER CODE#
The code follows the factory pattern because the first generic type parameter is Enum and the second is open. The following code shows a custom converter that works with Dictionary. "MM/dd/yyyy", CultureInfo.InvariantCulture)) Writer.WriteStringValue(dateTimeValue.ToString( "MM/dd/yyyy", CultureInfo.InvariantCulture) Public class DateTimeOffsetJsonConverter : JsonConverterĭateTimeOffset.ParseExact(reader.GetString()!,
The converter uses mm/dd/yyyy format for DateTimeOffset properties. The following sample is a converter that overrides default serialization for an existing data type. The factory pattern creates a class that determines, at run time, which specific type is required and dynamically creates the appropriate converter. The basic pattern creates a class that can handle one type. Some examples of types that can be handled by the basic pattern include: For example, converters for the following types require the factory pattern:
The basic pattern is for non-generic and closed generic types. The factory pattern is for converters that handle type Enum or open generics. There are two patterns for creating a custom converter: the basic pattern and the factory pattern. For more information, see Visual Basic support. Visual Basic can't be used to write custom converters but can call converters that are implemented in C# libraries. For more information, see Reuse JsonSerializerOptions instances. In the code you write for a custom converter, be aware of the substantial performance penalty for using new JsonSerializerOptions instances. Support Dictionary with non-string key.Deserialize inferred types to object properties.The following scenarios are covered later in this article: You can also write custom converters to customize or extend with functionality not included in the current release.
For more information, see DateTime and DateTimeOffset support in.
#JACKSON2 SERALIZATION WRITEMAPPER ISO#
By default, ISO 8601-1:2019 is supported, including the RFC 3339 profile. For example, you might want DateTime values to be represented by mm/dd/yyyy format. To override the default behavior of a built-in converter.The namespace has built-in converters for most primitive types that map to JavaScript primitives. NET.Ī converter is a class that converts an object or a value to and from JSON.
#JACKSON2 SERALIZATION WRITEMAPPER HOW TO#
For an introduction to, see How to serialize and deserialize JSON in. This article shows how to create custom converters for the JSON serialization classes that are provided in the namespace.
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