How do C# classes deal with dollar signs in JSON?

How do C# classes deal with dollar signs in JSON?

In C#, classes used for deserializing JSON data typically do not have special handling for dollar signs in JSON property names. JSON property names in C# are mapped to class properties based on their names, and dollar signs are treated like any other character in the property names.

When deserializing JSON data to C# objects using libraries like Newtonsoft.Json (Json.NET) or System.Text.Json (introduced in .NET Core 3.0 and .NET 5+), the property names in the JSON data are matched to the corresponding properties in the C# class based on their names.

Here's an example of how JSON data with dollar signs can be deserialized to a C# class:

JSON data:

{ "name": "John", "age": 30, "$occupation": "Developer" }

C# class:

public class Person { public string Name { get; set; } public int Age { get; set; } public string Occupation { get; set; } }

Deserialization:

string jsonData = "{\"name\":\"John\",\"age\":30,\"$occupation\":\"Developer\"}"; Person person = JsonConvert.DeserializeObject<Person>(jsonData);

After deserialization, the person object will have the following values:

  • Name: "John"
  • Age: 30
  • Occupation: "Developer"

As you can see, the dollar sign in the JSON property name ($occupation) is treated like any other character and mapped to the Occupation property in the C# class.

Keep in mind that the property names in the JSON data must match the property names in the C# class for successful deserialization. If there's a mismatch, the deserialization process might fail or populate the C# class properties with default values.

Examples

  1. "C# JSON property name with dollar sign"

    Code Implementation:

    public class MyData { [JsonProperty("$propertyName")] public string PropertyName { get; set; } }

    Description: This code demonstrates using the JsonProperty attribute to specify a JSON property name with a dollar sign.

  2. "How to deserialize JSON with dollar signs in C#"

    Code Implementation:

    var json = "{\"$propertyName\":\"value\"}"; var myData = JsonConvert.DeserializeObject<MyData>(json);

    Description: The code shows how to deserialize JSON with a dollar sign in the property name using Json.NET.

  3. "C# JSON.NET dollar sign escape in property name"

    Code Implementation:

    public class MyData { [JsonProperty("\\$propertyName")] public string PropertyName { get; set; } }

    Description: In this code, the JsonProperty attribute is used to escape the dollar sign in the JSON property name.

  4. "C# JSON property name with underscore instead of dollar sign"

    Code Implementation:

    public class MyData { [JsonProperty(PropertyName = "_propertyName")] public string PropertyName { get; set; } }

    Description: Here, the code illustrates using the JsonProperty attribute to substitute an underscore for the dollar sign in the JSON property name.

  5. "C# JSON serialization with dollar sign in property name"

    Code Implementation:

    var myData = new MyData { PropertyName = "value" }; var json = JsonConvert.SerializeObject(myData);

    Description: This code shows how to serialize a C# object with a dollar sign in the property name using Json.NET.

  6. "C# JSON.NET custom naming strategy for dollar signs"

    Code Implementation:

    public class DollarSignNamingStrategy : CamelCaseNamingStrategy { protected override string ResolvePropertyName(string name) { return base.ResolvePropertyName(name.Replace("$", "_")); } }

    Description: The code demonstrates a custom naming strategy that replaces dollar signs with underscores during JSON serialization.

  7. "C# JSON property name case sensitivity with dollar signs"

    Code Implementation:

    var settings = new JsonSerializerSettings { ContractResolver = new DefaultContractResolver { NamingStrategy = new CamelCaseNamingStrategy() } }; var json = JsonConvert.SerializeObject(myData, settings);

    Description: The code illustrates using a custom contract resolver to control the case sensitivity of property names, including those with dollar signs.

  8. "C# JSON.NET ignore dollar sign in property name during deserialization"

    Code Implementation:

    public class MyData { [JsonProperty("$propertyName")] public string PropertyName { get; set; } [OnDeserialized] internal void OnDeserializedMethod(StreamingContext context) { // Remove dollar sign during deserialization if (PropertyName != null && PropertyName.StartsWith("$")) { PropertyName = PropertyName.Substring(1); } } }

    Description: In this code, an OnDeserialized method is used to modify the property name during deserialization, removing the leading dollar sign.

More Tags

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