DataGridView: Make Enter Key Move to Next Column

Private Sub gvInvoice_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles gvInvoice.KeyDown
       If e.KeyCode = Keys.Enter Then
           Dim ri As Integer = gvInvoice.CurrentCell.RowIndex
           Dim ci As Integer = gvInvoice.CurrentCell.ColumnIndex
           e.SuppressKeyPress = True
           FindNextCell(gvInvoice, ri, ci + 1)  'checking from Next
       End If
   End Sub

   Sub FindNextCell(ByVal dgv As DataGridView, ByVal rowindex As Integer, ByVal columnindex As Integer)
       Dim found As Boolean = False

       While dgv.RowCount > rowindex
           While dgv.Columns.Count > columnindex
               If Not (dgv.Rows(rowindex).Cells(columnindex)).ReadOnly Then
                   If dgv.Rows(rowindex).Cells(columnindex).Visible = True Then
                       dgv.CurrentCell = dgv.Rows(rowindex).Cells(columnindex)
                       Exit Sub
                   Else
                       columnindex += 2
                   End If
               Else
                   columnindex += 1
               End If
           End While
           rowindex += 1
           columnindex = 0
       End While
   End Sub

private void dataGridView1_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Enter)
            {
                e.SuppressKeyPress=true;
                int iColumn = dataGridView1.CurrentCell.ColumnIndex;
                int iRow = dataGridView1.CurrentCell.RowIndex;
                if (iColumn == dataGridView1.Columns.Count-1)
                    dataGridView1.CurrentCell = dataGridView1[0, iRow + 1];
                else
                    dataGridView1.CurrentCell = dataGridView1[iColumn + 1, iRow];

            }
        }