Removing a duplicate row (WMI Script)

Question

I've built an InfoPath form that queries WMI data and displays it in the form so that we can submit the info to a SharePoint list.

I'm putting on the final touches and am having problems with one small section.  When i query the RAM, i have it display the information into a repeating table.  The problem is when i create the repeating table for some reason it duplicates the first row.  I found an article on how to remove the first row (http://www.bizsupportonline.net/infopath2007/programmatically-delete-first-row-repeating-table-infopath.htm)

I use this same bit of code to remove the first row from another section and it works just fine, but for some reason when i do this very same thing it deletes the first 2 rows.  I can't figure out why it works fine in one section but not in the other section, i copied and pasted the same bit of code so it should work the same.  If someone could help me figure out what's going on here i'd appreciate it.

code sample:

using Microsoft.Office.InfoPath;

using System;

using System.Xml;

using System.Xml.XPath;

using System.Management;

using System.Net.NetworkInformation;

namespace Inventory_Rev1

{

public partial class FormCode

{

// Member variables are not supported in browser-enabled forms.

// Instead, write and read these values from the FormState

// dictionary using code such as the following:

//

// private object _memberVariable

// {

// get

// {

// return FormState["_memberVariable"];

// }

// set

// {

// FormState["_memberVariable"] = value;

// }

// }

// NOTE: The following procedure is required by Microsoft Office InfoPath.

// It can be modified using Microsoft Office InfoPath.

ManagementObjectSearcher searcherMemory =

new ManagementObjectSearcher("root\\CIMV2",

"SELECT * FROM Win32_PhysicalMemory");

public void InternalStartup()

{

EventManager.FormEvents.Loading += new LoadingEventHandler(FormEvents_Loading);

}

public void FormEvents_Loading(object sender, LoadingEventArgs e)

{

foreach (ManagementObject queryObj in searcherMemory.Get())

{

int counter = 1;

{

string slot = queryObj["DeviceLocator"].ToString();

string capacity = queryObj["Capacity"].ToString();

string speed = queryObj["Speed"].ToString();

// Create an XPathNavigator to walk the main data source

// of the form.

XPathNavigator xnMyForm = this.CreateNavigator();

XmlNamespaceManager ns = this.NamespaceManager;

// Set the fields in the form.

xnMyForm.SelectSingleNode("/my:myFields/my:Memory/my:Ram/my:slot", ns)

.SetValue(slot);

xnMyForm.SelectSingleNode("/my:myFields/my:Memory/my:Ram/my:capacity", ns)

.SetValue(capacity);

xnMyForm.SelectSingleNode("/my:myFields/my:Memory/my:Ram/my:speed", ns)

.SetValue(speed);

// Increment the counter

counter++;

// Add the item to the repeating table

AddItemMemory(slot, capacity, speed);

 

// Remove the first empty item from the repeating table

DeleteFirstEmptyItemMemory();

}

}

}

private void AddItemMemory(string slot, string capacity, string speed)

{

XmlDocument doc = new XmlDocument();

XmlNode group = doc.CreateElement("Ram",

NamespaceManager.LookupNamespace("my"));

XmlNode field = doc.CreateElement("slot",

NamespaceManager.LookupNamespace("my"));

XmlNode node = group.AppendChild(field);

node.InnerText = slot;

field = doc.CreateElement("capacity",

NamespaceManager.LookupNamespace("my"));

node = group.AppendChild(field);

node.InnerText = capacity;

field = doc.CreateElement("speed",

NamespaceManager.LookupNamespace("my"));

node = group.AppendChild(field);

node.InnerText = speed;

doc.AppendChild(group);

MainDataSource.CreateNavigator().SelectSingleNode(

"/my:myFields/my:Memory",

NamespaceManager).AppendChild(doc.DocumentElement.CreateNavigator());

 

}

private void DeleteFirstEmptyItemMemory()

{

XPathNavigator domNav = MainDataSource.CreateNavigator();

XPathNavigator itemNav = domNav.SelectSingleNode(

"/my:myFields/my:Memory/my:Ram[1]",

NamespaceManager);

if (itemNav != null)

itemNav.DeleteSelf();

}

}

}