Simpler way to Serializing objects in C# 4.0

[Serializable]
public class ContentModel
{
   public int ContentId { get; set; }
   public string HeaderRendered { get; set; }

   public ContentModel()
   {
       ContentId = 0;
       HeaderRendered = string.Empty;
   }

   public ContentModel(SerializationInfo info, StreamingContext ctxt)
   {
       ContentId = (int)info.GetValue("ContentId", typeof(int));
       HeaderRendered = (string)info.GetValue("HeaderRendered", typeof(string));
   }

   public void GetObjectData(SerializationInfo info, StreamingContext context)
   {
       info.AddValue("ContentId ", ContentId);
       info.AddValue("HeaderRendered", HeaderRendered);
   }
}