C# Json Examples

C# Basic

C# Data Type

C# OOP

C# IO

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C# Advanced

Json Serialize in C#

To serialize a C# class object to JSON, you can use the Newtonsoft.Json NuGet package, also known as JSON.NET. Here's an example of how to serialize a class object to JSON:

using Newtonsoft.Json;

public class MyClass
{
    public string Name { get; set; }
    public int Age { get; set; }
}

public static void Main(string[] args)
{
    MyClass obj = new MyClass { Name = "John", Age = 30 };
    string json = JsonConvert.SerializeObject(obj);
    Console.WriteLine(json);
}

This will output the JSON string: {"Name":"John","Age":30}.

If you want to change property names while JSON serializing in C#, you can use the JsonProperty attribute:

public class MyClass
{
    [JsonProperty("FullName")]
    public string Name { get; set; }
    [JsonProperty("Years")]
    public int Age { get; set; }
}

This will output the JSON string: {"FullName":"John","Years":30}.

To serialize an anonymous type to a JSON string in C#, you can use the JsonConvert class:

var obj = new { Name = "John", Age = 30 };
string json = JsonConvert.SerializeObject(obj);
Console.WriteLine(json);

This will output the JSON string: {"Name":"John","Age":30}.

Serialize object to JSON in C#:

Converting a C# object to its JSON representation.

Code snippet:

Person person = new Person { Name = "John", Age = 30 };
string jsonString = JsonConvert.SerializeObject(person);

Json.NET serialize example in C#:

Using Json.NET for object serialization to JSON in C#.

Code snippet:

Person person = new Person { Name = "John", Age = 30 };
string jsonString = JsonConvert.SerializeObject(person);

C# JSON object serialization:

Serializing a C# object to a JSON string.

Code snippet:

Person person = new Person { Name = "John", Age = 30 };
string jsonString = JsonConvert.SerializeObject(person);

Using JsonConvert.SerializeObject in C#:
- Utilizing JsonConvert.SerializeObject for object serialization in C#.
- Code snippet:
```
Person person = new Person { Name = "John", Age = 30 };
string jsonString = JsonConvert.SerializeObject(person);
```
Custom JSON serialization in C#:
- Customizing the serialization process using attributes or converters in C#.
- Code snippet:
```
[JsonConverter(typeof(CustomConverter))]
public class Person
{
    // Properties
}
```

DataContractJsonSerializer in C#:

Using DataContractJsonSerializer for object serialization in C#.

Code snippet:

DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(Person));
using (MemoryStream stream = new MemoryStream())
{
    serializer.WriteObject(stream, person);
    string jsonString = Encoding.Default.GetString(stream.ToArray());
}

C# serialize dictionary to JSON:

Serializing a dictionary to JSON in C#.

Code snippet:

Dictionary<string, object> data = new Dictionary<string, object> { { "Name", "John" }, { "Age", 30 } };
string jsonString = JsonConvert.SerializeObject(data);

JsonSerializer.Serialize in C#:

Using JsonSerializer.Serialize for object serialization in C#.

Code snippet:

Person person = new Person { Name = "John", Age = 30 };
string jsonString = JsonSerializer.Serialize(person);

Serializing nested objects to JSON in C#:

Handling serialization of objects with nested structures.

Code snippet:

public class Address { /* Address properties */ }
public class Person { public Address Address { get; set; } }
Person person = new Person { Address = new Address() };
string jsonString = JsonConvert.SerializeObject(person);

Anonymous type JSON serialization in C#:

Serializing an anonymous type to JSON in C#.

Code snippet:

var anonymousObject = new { Name = "John", Age = 30 };
string jsonString = JsonConvert.SerializeObject(anonymousObject);

C# serialize object to JSON string:

Converting a C# object to its JSON representation as a string.

Code snippet:

Person person = new Person { Name = "John", Age = 30 };
string jsonString = JsonConvert.SerializeObject(person);

Using JavaScriptSerializer for JSON serialization in C#:
- Utilizing JavaScriptSerializer for object serialization in C#.
- Code snippet:
```
JavaScriptSerializer serializer = new JavaScriptSerializer();
string jsonString = serializer.Serialize(person);
```

JsonConvert.SerializeObject formatting in C#:

Applying formatting options to the serialized JSON string using JsonConvert.

Code snippet:

Person person = new Person { Name = "John", Age = 30 };
string jsonString = JsonConvert.SerializeObject(person, Formatting.Indented);

Serialize and deserialize JSON arrays in C#:

Handling serialization and deserialization of JSON arrays in C#.

Code snippet:

List<Person> persons = new List<Person> { /* Person objects */ };
string jsonArray = JsonConvert.SerializeObject(persons);

C# serialize nullable properties to JSON:

Serializing objects with nullable properties to JSON in C#.

Code snippet:

public class Person { public int? Age { get; set; } }
Person person = new Person { Age = null };
string jsonString = JsonConvert.SerializeObject(person);

Customizing JSON property names in C# serialization:
- Specifying custom names for JSON properties during serialization.
- Code snippet:
```
public class Person
{
    [JsonProperty("FullName")]
    public string Name { get; set; }
}
```

C# serialize enum to JSON:

Serializing enumerations to JSON in C#.

Code snippet:

public enum Gender { Male, Female }
public class Person { public Gender Gender { get; set; } }
Person person = new Person { Gender = Gender.Male };
string jsonString = JsonConvert.SerializeObject(person);

JsonWriter for manual JSON serialization in C#:

Manually using JsonWriter for more control over JSON serialization.

Code snippet:

using (StringWriter sw = new StringWriter())
using (JsonWriter writer = new JsonTextWriter(sw))
{
    JsonSerializer serializer = new JsonSerializer();
    serializer.Serialize(writer, person);
    string jsonString = sw.ToString();
}