Deserializing a simple JSON array with DataContractJsonSerializer in C#

Deserializing a simple JSON array with DataContractJsonSerializer in C#

To deserialize a simple JSON array using the DataContractJsonSerializer in C#, you need to define a data contract that represents the structure of the JSON array. Here's an example:

using System; using System.IO; using System.Runtime.Serialization.Json; using System.Text; public class Program { public static void Main() { string json = @"[1, 2, 3, 4, 5]"; using (MemoryStream stream = new MemoryStream(Encoding.UTF8.GetBytes(json))) { DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(int[])); int[] array = (int[])serializer.ReadObject(stream); foreach (int item in array) { Console.WriteLine(item); } } } }

In this example, we have a JSON array represented as a string (json). We use the DataContractJsonSerializer to deserialize the JSON array into an int[] array.

We create a MemoryStream and write the UTF-8 encoded bytes of the JSON string into it. Then, we instantiate the DataContractJsonSerializer with the type int[] as the target type.

Next, we call the ReadObject method of the serializer, passing in the stream. This method deserializes the JSON array into the int[] array.

Finally, we iterate over the elements of the int[] array and display them on the console.

When you run the code, it will deserialize the JSON array and print the individual values.

Make sure to adjust the JSON string (json) and the target type (int[]) based on your actual JSON structure and data type requirements.

Examples

  1. "C# DataContractJsonSerializer deserialize simple JSON array"

    • Code:
      string jsonArray = "[{\"Name\":\"John\"},{\"Name\":\"Jane\"}]"; using (MemoryStream stream = new MemoryStream(Encoding.UTF8.GetBytes(jsonArray))) { DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(List<YourClass>)); List<YourClass> result = (List<YourClass>)serializer.ReadObject(stream); }
    • Description: Deserializes a simple JSON array into a list of objects using DataContractJsonSerializer in C#.

  2. "C# DataContractJsonSerializer deserialize JSON array with custom type"

    • Code:
      string jsonArray = "[{\"Property1\":\"Value1\"},{\"Property1\":\"Value2\"}]"; using (MemoryStream stream = new MemoryStream(Encoding.UTF8.GetBytes(jsonArray))) { DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(List<YourCustomType>)); List<YourCustomType> result = (List<YourCustomType>)serializer.ReadObject(stream); }
    • Description: Deserializes a JSON array with a custom type into a list of objects using DataContractJsonSerializer in C#.

  3. "C# DataContractJsonSerializer deserialize JSON array with nested objects"

    • Code:
      string jsonArray = "[{\"Parent\":{\"ChildProperty\":\"Value1\"}},{\"Parent\":{\"ChildProperty\":\"Value2\"}}]"; using (MemoryStream stream = new MemoryStream(Encoding.UTF8.GetBytes(jsonArray))) { DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(List<YourParentClass>)); List<YourParentClass> result = (List<YourParentClass>)serializer.ReadObject(stream); }
    • Description: Deserializes a JSON array with nested objects into a list of parent objects using DataContractJsonSerializer in C#.

  4. "C# DataContractJsonSerializer deserialize JSON array with DateTime property"

    • Code:
      string jsonArray = "[{\"Date\":\"2022-01-01T12:00:00\"},{\"Date\":\"2022-02-01T14:30:00\"}]"; using (MemoryStream stream = new MemoryStream(Encoding.UTF8.GetBytes(jsonArray))) { DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(List<YourClassWithDateTime>), new DataContractJsonSerializerSettings { DateTimeFormat = new DateTimeFormat("yyyy-MM-ddTHH:mm:ss") }); List<YourClassWithDateTime> result = (List<YourClassWithDateTime>)serializer.ReadObject(stream); }
    • Description: Deserializes a JSON array with DateTime properties into a list of objects using DataContractJsonSerializer in C#.

  5. "C# DataContractJsonSerializer deserialize JSON array with nullable properties"

    • Code:
      string jsonArray = "[{\"NullableProperty\":null},{\"NullableProperty\":\"Value2\"}]"; using (MemoryStream stream = new MemoryStream(Encoding.UTF8.GetBytes(jsonArray))) { DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(List<YourClassWithNullable>)); List<YourClassWithNullable> result = (List<YourClassWithNullable>)serializer.ReadObject(stream); }
    • Description: Deserializes a JSON array with nullable properties into a list of objects using DataContractJsonSerializer in C#.

  6. "C# DataContractJsonSerializer deserialize JSON array with polymorphism"

    • Code:
      string jsonArray = "[{\"Type\":\"Derived\",\"Property\":\"Value1\"},{\"Type\":\"Base\",\"Property\":\"Value2\"}]"; using (MemoryStream stream = new MemoryStream(Encoding.UTF8.GetBytes(jsonArray))) { DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(List<BaseClass>), new DataContractJsonSerializerSettings { KnownTypes = new List<Type> { typeof(DerivedClass) } }); List<BaseClass> result = (List<BaseClass>)serializer.ReadObject(stream); }
    • Description: Deserializes a JSON array with polymorphic types into a list of base class objects using DataContractJsonSerializer in C#.

  7. "C# DataContractJsonSerializer deserialize JSON array with custom naming conventions"

    • Code:
      string jsonArray = "[{\"property_one\":\"Value1\"},{\"property_one\":\"Value2\"}]"; using (MemoryStream stream = new MemoryStream(Encoding.UTF8.GetBytes(jsonArray))) { DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(List<YourClass>), new DataContractJsonSerializerSettings { UseSimpleDictionaryFormat = true }); List<YourClass> result = (List<YourClass>)serializer.ReadObject(stream); }
    • Description: Deserializes a JSON array with custom property naming conventions into a list of objects using DataContractJsonSerializer in C#.

  8. "C# DataContractJsonSerializer deserialize JSON array with specified root element name"

    • Code:
      string jsonArray = "{\"CustomRoot\":[{\"Property\":\"Value1\"},{\"Property\":\"Value2\"}]}"; using (MemoryStream stream = new MemoryStream(Encoding.UTF8.GetBytes(jsonArray))) { DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(List<YourClass>), new DataContractJsonSerializerSettings { RootName = "CustomRoot" }); List<YourClass> result = (List<YourClass>)serializer.ReadObject(stream); }
    • Description: Deserializes a JSON array with a specified root element name into a list of objects using DataContractJsonSerializer in C#.

  9. "C# DataContractJsonSerializer deserialize JSON array with ignoring unknown properties"

    • Code:
      string jsonArray = "[{\"Property1\":\"Value1\",\"UnknownProperty\":\"Value2\"},{\"Property1\":\"Value3\"}]"; using (MemoryStream stream = new MemoryStream(Encoding.UTF8.GetBytes(jsonArray))) { DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(List<YourClass>), new DataContractJsonSerializerSettings { UseSimpleDictionaryFormat = true, IgnoreExtensionDataObject = true }); List<YourClass> result = (List<YourClass>)serializer.ReadObject(stream); }
    • Description: Deserializes a JSON array while ignoring unknown properties into a list of objects using DataContractJsonSerializer in C#.

  10. "C# DataContractJsonSerializer deserialize JSON array with custom converters"

    • Code:
      string jsonArray = "[{\"Date\":\"2022-01-01T12:00:00\"},{\"Date\":\"2022-02-01T14:30:00\"}]"; using (MemoryStream stream = new MemoryStream(Encoding.UTF8.GetBytes(jsonArray))) { DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(List<YourClassWithDateTime>), new DataContractJsonSerializerSettings { DateTimeFormat = new DateTimeFormat("yyyy-MM-ddTHH:mm:ss"), Converters = { new CustomDateTimeConverter() } }); List<YourClassWithDateTime> result = (List<YourClassWithDateTime>)serializer.ReadObject(stream); }
    • Description: Deserializes a JSON array with custom converters, such as for DateTime, into a list of objects using DataContractJsonSerializer in C#.

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