Experts guide !! problem with SetItemText of CListCtrl

When I try to add items using SetItemText of CListCtrl then I geta
debug assertion?
This I am doing in OnInitialUpdate of CFormView as I am subclassing a
CListCtrl CLASS.

I tried with the following but get failed in all the three.Pls let me
know where I amgoing wrong?
Can anyone help me?

void CMCView::OnInitialUpdate()
{

    CFormView::OnInitialUpdate();
    GetParentFrame()->RecalcLayout();
    CString buffer[4][3] = {
        "Item1","kp","30",
        "Item2","sp","20",
        "Item3","dp","40",
        "Item4","lp","50"
    };
// ResizeParentToFit();
    m_myListCtrl.InsertColumn(0, "Column 1");
    m_myListCtrl.InsertColumn(1, "Column 2");
    m_myListCtrl.InsertColumn(2, "Column 3");

    m_myListCtrl.SetColumnWidth(0, 100);
    m_myListCtrl.SetColumnWidth(1, 100);
    m_myListCtrl.SetColumnWidth(2, 100);

/*
TRY 1 : CODE FAILED
    int iItem = m_myListCtrl.InsertItem(0, "Primary");
BOOL bResult = m_myListCtrl.SetItemText(iItem, 1, "Secondary");
bResult = m_myListCtrl.SetItemText(iItem, 2, "444444");

*/

/*
TRY 2 : CODE FAILED

for(int i=0;i<=3;i++)
   {
    m_myListCtrl.InsertItem(i,(LPCSTR)buffer[i][0],i);
    m_myListCtrl.SetItemText(i,1,(LPCSTR)buffer[i][1]);
    //m_myListCtrl.SetItemText(i,2,(LPCSTR)buffer[i][2]);
   }*/

/*
TRY 3 : CODE FAILED

CString strText;
int nColumnCount = m_myListCtrl.GetHeaderCtrl()->GetItemCount();

// Insert 10 items in the list view control.
for (int i=0;i < 10;i++)
{
   strText.Format(TEXT("item %d"), i);

   // Insert the item, select every other item.
   m_myListCtrl.InsertItem(
      LVIF_TEXT|LVIF_STATE, i, strText,
      (i%2)==0 ? LVIS_SELECTED : 0, LVIS_SELECTED,
      0, 0);

   // Initialize the text of the subitems.
   for (int j=1;j < nColumnCount;j++)
   {
      strText.Format(TEXT("sub-item %d %d"), i, j);
      //m_myListCtrl.SetItemText(i, j, strText);
   }
}
*/

}