C#

using Microsoft.Office.InfoPath;

using System;

using System.Xml;

using System.Xml.XPath;

using System.Management;

namespace Inventory_Rev1

{

public partial class FormCode

{

ManagementObjectSearcher searcherNetwork =

new ManagementObjectSearcher("root\\CIMV2",

"SELECT * FROM Win32_NetworkAdapterConfiguration");

public void InternalStartup()

{

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

}

public void FormEvents_Loading(object sender, LoadingEventArgs e)

{

foreach (ManagementObject queryObj in searcherNetwork.Get())

{

int counter = 1;

//while (rows.MoveNext())

{

string nicName = queryObj["Description"].ToString();

string nicMac = (queryObj.Properties["MACAddress"].Value != null) ? queryObj.Properties["MACAddress"].Value.ToString() : "";

string nicIp = (queryObj.Properties["IPAddress"].Value != null) ? queryObj.Properties["IPAddress"].Value.ToString() : ""; 

// Create an XPathNavigator to walk the main data source

// of the form.

XPathNavigator xnMyForm = this.CreateNavigator();

XmlNamespaceManager ns = this.NamespaceManager;

xnMyForm.SelectSingleNode("/my:myFields/my:Network/my:AdapterInfo/my:nicName", ns)

.SetValue(nicName);

xnMyForm.SelectSingleNode("/my:myFields/my:Network/my:AdapterInfo/my:nicMac", ns)

.SetValue(nicMac);

xnMyForm.SelectSingleNode("/my:myFields/my:Network/my:AdapterInfo/my:nicIp", ns)

.SetValue(nicIp);

// Increment the counter

counter++;

// Add the item to the repeating table

AddItem(nicName, nicMac, nicIp);

 

// Remove the first empty item from the repeating table

DeleteFirstEmptyItemNIC();

}

}

}

private void AddItem(string nicName, string nicMac, string nicIp)

{

XmlDocument doc = new XmlDocument();

XmlNode group = doc.CreateElement("AdapterInfo",

NamespaceManager.LookupNamespace("my"));

XmlNode field = doc.CreateElement("nicName",

NamespaceManager.LookupNamespace("my"));

XmlNode node = group.AppendChild(field);

node.InnerText = nicName;

field = doc.CreateElement("nicMac",

NamespaceManager.LookupNamespace("my"));

node = group.AppendChild(field);

node.InnerText = nicMac;

field = doc.CreateElement("nicIp",

NamespaceManager.LookupNamespace("my"));

node = group.AppendChild(field);

node.InnerText = nicIp;

doc.AppendChild(group);

MainDataSource.CreateNavigator().SelectSingleNode(

"/my:myFields/my:Network",

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

 

}

private void DeleteFirstEmptyItemNIC()

{

XPathNavigator domNav = MainDataSource.CreateNavigator();

XPathNavigator itemNav = domNav.SelectSingleNode(

"/my:myFields/my:group1/my:group2[1]",

NamespaceManager);

if (itemNav != null)

itemNav.DeleteSelf();

}

}

}

namespace LockOut
{
    public partial class Utility : Form
    {
        public Form1 m_parent;
        public Utility(Form1 frm1)
        {
            m_parent = frm1;
        }
     public static DataTable DeviceHistory()
        {
            OleDbConnection pcDataConn = DBConnection();
            try
            {
                DataSet ds = new DataSet();
                string SQL = "SQL Statement";
                OleDbDataAdapter adapter = new OleDbDataAdapter();
                adapter.SelectCommand = new OleDbCommand(SQL, pcDataConn);
                adapter.Fill(ds);
                DataTable dt = new DataTable();
                dt = ds.Tables[0];
                if (dt.Rows.Count < 1)
                {
                    dt = null;
                }
                pcDataConn.Close();
                return dt;
            }
            catch(Exception ex)
            {
                pcDataConn.Close();
                DataTable dt = null;
                Console.WriteLine(ex.Message.ToString());
                return dt;
                
            }
        }
        public static void UpdateDeviceHistory()
        {
            m_parent.HistoryDataView.DataSource = DeviceHistory(); //<-- Here is where the error is generated
        }
}
------------------------------------------------------

namespace LockOut
{
    public partial class Form1 : Form
    {
     private void Refresh_Click(object sender, EventArgs e)
        {
            Utility.UpdateDeviceHistory();
        }
    }
}