Hiding rows in datagrid view

foreach (DataGridViewRow dr in dataGridView4.Rows)
{
   int targetColumnIndex = 6;
   if (dr.Cells.Count > targetColumnIndex) // validate the index
      if (dr.Cells[targetColumnIndex].Value.ToString() == "Processing")
      {
         dr.Visible = false;
      }
}

foreach (DataGridViewRow dg in dataGridView1.Rows)
{
   int targetColumnIndex = 6;
   if (dg.Cells.Count > targetColumnIndex) // validate the index
      if (dg.Cells[targetColumnIndex].Value.ToString() == "Pending")
      {
         dg.Visible = false;
      }
}