Use Generics to achieve data in required json format

Question

I have a generic class say public class Generic<T> { public T Data {get; set;} } Suppose i have an anonymous object like var r1 = new { A = lstA, validation = null as ValidationError } var r2 = new { B = lstB, validation = null as ValidationError } and i assigned as below Generic<object> g1 = new Generic<object> g1.Data = r1 Generic<object> g2 = new Generic<object> g2.Data = r2 When i serialize above g1 using JsonSerialize.Serialize(g1), i got output { "Data":{ "A":[ { } ], "validation":null } } { "Data":{ "B":[ { } ], "validation":null } } Right now i achieved above json format by assigning anonymous r1 to g1.Data. Is it possible to achieve above json format by just using generics? The name "A" in above json format differ in each cases. It can be "A"in one case, "B" in another case etc

Answer 1

no. you get the A and B by defining them as the property name of an anonymous, not types. also not sure why you use generic when Data is an object, just use:

public class DataWrapper 
{
   public object Data {get;set;}

}
...

var g1 = new DataWrapper 
{ 
   Data = new 
   { 
     A = lstA, 
     validation = null as ValidationError 
   }
};

or if you just want to json serialize g1, no wrapper class required:

var g1 = new 
{ 
   Data = new 
   { 
     A = lstA, 
     validation = null as ValidationError 
   }
}; 

Answer 2

Hi @Simi Nalinakumari ,

You can use reflection to extract property names at runtime, use them to create new anonymous objects with the desired property names, and then serialize them into JSON.

    static string SerializeWithDynamicPropertyName<T>(Generic<T> generic)
    {
        var dataProperties = typeof(T).GetProperties();
        var propertyName = "";
        foreach (var prop in dataProperties)
        {
            if (prop.PropertyType.IsGenericType && prop.PropertyType.GetGenericTypeDefinition() == typeof(List<>))
            {
                propertyName = prop.Name;
                break;
            }
        }

        if (string.IsNullOrEmpty(propertyName))
        {
            throw new ArgumentException("No list property found in the anonymous object.");
        }

        // Create a new anonymous object with the dynamic property name
        var anonymousObject = new { [propertyName] = generic.Data };

        // Serialize the anonymous object to JSON
        return JsonSerializer.Serialize(anonymousObject);
    }

Best Regards.

Jiachen Li

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