Windows Application
Visual Studio 2005

I am new to C# and have done very little XML or serialization.

My client wishes me to store configuration data in an XML file.

It will look something like this:

  <definition>
     <hardwaredefinitions>
        <hardwaredefinition id="1" name="Configuration Data"
editor="ConfigurationPanel">
           <hardwarerowdata>
              <row value="Channel position 1" />
              <row value="Channel position 2" />
              <row value="Channel position 3" />
              <row value="Channel position 4" />
           </hardwarerowdata>
           <itemdata>
              <gpsstandby value="true" />
              <vehiclevoltageusage value="48" />
           </itemdata>
        </hardwaredefinition>
     </hardwaredefinitions>
  </definition>

The elements in the <hardwarerowdata> node (<row..../>) will be
displayed in a data grid.  The elements in the <itemdata> node
(<gpsstandby etc.) will be used to populate a check box and a text box
on the form.

This data may be changed and saved back to the XML file.  I'd like to
use the built-in methods to serialize it, but it barfs because the
<row.../> nodes are being stored in an array and it throws the
following exception:

.HardwareDefinitionRow cannot be serialized because it does not have a
parameterless constructor.

HardwareDefinitionRow is declared thus:

       public HardwareDefinitionRow[] HardwareDefinitionRows
       {
           get { return m_rows; }
       }

       public class HardwareDefinitionRow
       {
           public HardwareDefinitionRow(int i)
           {
               index = i;
           }

           public int Index
           {
               get { return index; }
           }

           public string HardwareDefinition
           {
               get { return hardwaredefinition; }
               set { hardwaredefinition = value; }
           }

           private int index;
           private string hardwaredefinition;

      }

       HardwareDefinitionRow[] m_rows;

Anyone any idea about how I can crack this?

Thanks

Edward