Jika Anda tidak begitu tertarik untuk harus menghias kode dengan Atribut seperti saya, terutama ketika Anda tidak bisa mengatakan pada waktu kompilasi apa yang akan terjadi di sini adalah solusi saya.
Menggunakan Javascript Serializer
public static class JsonSerializerExtensions
{
public static string ToJsonString(this object target,bool ignoreNulls = true)
{
var javaScriptSerializer = new JavaScriptSerializer();
if(ignoreNulls)
{
javaScriptSerializer.RegisterConverters(new[] { new PropertyExclusionConverter(target.GetType(), true) });
}
return javaScriptSerializer.Serialize(target);
}
public static string ToJsonString(this object target, Dictionary<Type, List<string>> ignore, bool ignoreNulls = true)
{
var javaScriptSerializer = new JavaScriptSerializer();
foreach (var key in ignore.Keys)
{
javaScriptSerializer.RegisterConverters(new[] { new PropertyExclusionConverter(key, ignore[key], ignoreNulls) });
}
return javaScriptSerializer.Serialize(target);
}
}
public class PropertyExclusionConverter : JavaScriptConverter
{
private readonly List<string> propertiesToIgnore;
private readonly Type type;
private readonly bool ignoreNulls;
public PropertyExclusionConverter(Type type, List<string> propertiesToIgnore, bool ignoreNulls)
{
this.ignoreNulls = ignoreNulls;
this.type = type;
this.propertiesToIgnore = propertiesToIgnore ?? new List<string>();
}
public PropertyExclusionConverter(Type type, bool ignoreNulls)
: this(type, null, ignoreNulls){}
public override IEnumerable<Type> SupportedTypes
{
get { return new ReadOnlyCollection<Type>(new List<Type>(new[] { this.type })); }
}
public override IDictionary<string, object> Serialize(object obj, JavaScriptSerializer serializer)
{
var result = new Dictionary<string, object>();
if (obj == null)
{
return result;
}
var properties = obj.GetType().GetProperties();
foreach (var propertyInfo in properties)
{
if (!this.propertiesToIgnore.Contains(propertyInfo.Name))
{
if(this.ignoreNulls && propertyInfo.GetValue(obj, null) == null)
{
continue;
}
result.Add(propertyInfo.Name, propertyInfo.GetValue(obj, null));
}
}
return result;
}
public override object Deserialize(IDictionary<string, object> dictionary, Type type, JavaScriptSerializer serializer)
{
throw new NotImplementedException(); //Converter is currently only used for ignoring properties on serialization
}
}