MongoDB.Bson.Serialization.Serializers.ImageSerializer.Deserialize C# (CSharp) Метод

        public override object Deserialize(
            BsonReader bsonReader,
            Type nominalType,
            Type actualType,
            IBsonSerializationOptions options)
        {
            if (nominalType != typeof(Image))
            {
                var message = string.Format("Nominal type must be Image, not {0}.", nominalType.FullName);
                throw new ArgumentException(message, "nominalType");
            }

            if (actualType != typeof(Image))
            {
                var message = string.Format("Actual type must be Image, not {0}.", actualType.FullName);
                throw new ArgumentException(message, "actualType");
            }

            var bsonType = bsonReader.GetCurrentBsonType();
            if (bsonType == BsonType.Null)
            {
                bsonReader.ReadNull();
                return null;
            }
            else
            {
                var message = string.Format("BsonType must be Null, not {0}.", bsonType);
                throw new FileFormatException(message);
            }
        }