handle null values for string when implementing IXmlSerializable interface
- by user208081
I have the following class that implements IXmlSerializable. When implementing WriteXml(), I need to handle the case where the string members of this class may be null values. What is the best way of handling this?
Currently, I am using the default constructor in which all the string properties are initialized to empty string values. This way, when WriteXml() is called, the string will not be null.
One other way I could do this is check using String.IsNullOrEmpty before writing each string in xml.
Any suggestions on how I can improve this code?
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml.Serialization;
using System.Globalization;
namespace TCS.Common.InformationObjects
{
public sealed class FaxSender : IXmlSerializable
{
#region Public Constants
private const string DEFAULT_CLASS_NAME = "FaxSender";
#endregion Public Constants
#region Public Properties
public string Name { get; set; }
public string Organization { get; set; }
public string PhoneNumber { get; set; }
public string FaxNumber { get; set; }
public string EmailAddress { get; set; }
#endregion Public Properties
#region Public Methods
#region Constructors
public FaxSender()
{
Name = String.Empty;
Organization = String.Empty;
PhoneNumber = String.Empty;
FaxNumber = String.Empty;
EmailAddress = String.Empty;
}
public FaxSender(string name, string organization, string phoneNumber, string faxNumber, string emailAddress)
{
Name = name;
Organization = organization;
PhoneNumber = phoneNumber;
FaxNumber = faxNumber;
EmailAddress = emailAddress;
}
#endregion Constructors
#region IXmlSerializable Members
public System.Xml.Schema.XmlSchema GetSchema()
{
throw new NotImplementedException();
}
public void ReadXml(System.Xml.XmlReader reader)
{
throw new NotImplementedException();
}
public void WriteXml(System.Xml.XmlWriter xmlWriter)
{
try
{
// <sender>
xmlWriter.WriteStartElement("sender");
// Write the name of the sender as an element.
xmlWriter.WriteElementString("name", this.Name.ToString(CultureInfo.CurrentCulture));
// Write the organization of the sender as an element.
xmlWriter.WriteElementString("organization", this.Organization.ToString(CultureInfo.CurrentCulture));
// Write the phone number of the sender as an element.
xmlWriter.WriteElementString("phone_number", this.PhoneNumber.ToString(CultureInfo.CurrentCulture));
// Write the fax number of the sender as an element.
xmlWriter.WriteElementString("fax_number", this.FaxNumber.ToString(CultureInfo.CurrentCulture));
// Write the email address of the sender as an element.
xmlWriter.WriteElementString("email_address", this.EmailAddress.ToString(CultureInfo.CurrentCulture));
// </sender>
xmlWriter.WriteEndElement();
}
catch
{
// Rethrow any exceptions.
throw;
}
}
#endregion IXmlSerializable Members
#endregion Public Methods
}
}
