Having problems accessing database data in ListControl

void CReadDBDlg::OnRead() 
{
    // TODO: Add your control notification handler code here
    CDatabase database;
    CString SqlString;
    CString sCatID, sCategory;
    CString sDriver = "MICROSOFT ACCESS DRIVER (*.mdb)";
    CString sDsn;
    CString sFile = "C:\\Documents and Settings\\Owner\\Desktop\\" 
                    "mfcdataAccess\\readDb\\ReadDB_demo\\Test.mdb";
    int iRec = 0; 
    // Build ODBC connection string
    sDsn.Format("ODBC;DRIVER={%s};DSN='';DBQ=%s",sDriver,sFile);
    TRY
    {
        // Open the database
        database.Open(NULL,false,false,sDsn);
        // Allocate the recordset
        CRecordset recset( &database );
        // Build the SQL statement
        SqlString = "SELECT CatID, Category "
                    "FROM Categories";
        // Execute the query
        recset.Open(CRecordset::forwardOnly,SqlString,CRecordset::readOnly);
        // Reset List control if there is any data
        ResetListControl();
        // populate Grids
        ListView_SetExtendedListViewStyle(m_ListControl,LVS_EX_GRIDLINES);
        // Column width and heading
        m_ListControl.InsertColumn(0,"Category Id",LVCFMT_LEFT,-1,0);
        m_ListControl.InsertColumn(1,"Category",LVCFMT_LEFT,-1,1);
        m_ListControl.SetColumnWidth(0, 120);
        m_ListControl.SetColumnWidth(1, 200);
        short nFields = recset.GetODBCFieldCount( ); //get total no. of fields
        CDBVariant varValue;
        // Loop through each record
        while( !recset.IsEOF() )
        {
            for( short index = 0; index < nFields; index++ )
            {
                // Copy each column into a variable
                recset.GetFieldValue( index, varValue );
                switch ( index ) {
                    case 0: // field no 1
                        if ( varValue.m_dwType == 8 )
                            //Insert values into the list control
                            iRec = m_ListControl.InsertItem(0,varValue.m_pstring->GetBuffer(),0);
                        break;
                    case 1: // field no 2
                        if ( varValue.m_dwType == 8 )
                            m_ListControl.SetItemText(0,1,varValue.m_pstring->GetBuffer());
                        break;
                }
            }
            // goto next record
            recset.MoveNext();
        }
        // Close the database
        recset.Close();
        database.Close();
    }
    CATCH(CDBException, e)
    {
        // If a database exception occured, show error msg
        AfxMessageBox("Database error: "+e->m_strError);
    }
    END_CATCH;
}

// Reset List control
void CReadDBDlg::ResetListControl()
{
    m_ListControl.DeleteAllItems();
    int iNbrOfColumns;
    CHeaderCtrl* pHeader = (CHeaderCtrl*)m_ListControl.GetDlgItem(0);
    if (pHeader)
    {
        iNbrOfColumns = pHeader->GetItemCount();
    }
    for (int i = iNbrOfColumns; i >= 0; i--)
    {
        m_ListControl.DeleteColumn(i);
    }
}