Serialization/Deserialization of multiple objects

Hi,

I have a class, whcih contains certails properties. I want to create multiple objects of this class, and create one single XML file out of that.

Can anyone help on that?

   [DataContract]
    public sealed class HsdResponseMessage : MessageBase, IMessage
    {
        [DataMember(Order = 1)] public string RequestMessageFileName { get; set; }
        [DataMember(Order = 2)] public string RequestMessageId { get; set; }
        [DataMember(Order = 3)] public string HsdRecordId { get; private set; }
        [DataMember(Order = 4)] public string HsdException { get; private set; }
        [DataMember(Order = 5)] public bool HsdCommitStatus { get; private set; }
        [DataMember(Order = 6)] public string Title { get; private set; }
        [DataMember(Order = 7)] public string Description { get; private set; }
        [DataMember(Order = 8)] public string Steps { get; private set; }
        [DataMember(Order = 9)] public int HasAttachments { get; private set; }
        [DataMember(Order = 10)] public string AttachmentFileName { get; private set; }
 public HsdResponseMessage(MessageHeader header, string fileName, string requestMessageId, string requestMessageFileName, string hsdRecordId, string strTitle, string strDescription, string strSteps, int iHasAttachments, string strAttachmentFileName)
            : base(MessageTypeEnum.HsdResponse, header)
        {
            FileName = fileName;
            RequestMessageFileName = requestMessageFileName;
            RequestMessageId = requestMessageId;
            HsdRecordId = hsdRecordId;
            Title = strTitle;
            Description = strDescription;
            Steps = strSteps;
            HasAttachments = iHasAttachments;
            AttachmentFileName = strAttachmentFileName;
            HsdCommitStatus = true;
            HsdException = string.Empty;
        }
}