How to export to excel the autoincremented row value of datagridview using VB.NET?

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VB

Visual-Studio

MS-Excel

I have datagridview with columns: FullName, Age, Birthday, Degree.

The autoincremented row value displayed/located at the first column of datagridview that is automatically generated by the following code:

Private Sub DataGridView1_CellFormatting(sender As Object, e As System.Windows.Forms.DataGridViewCellFormattingEventArgs) Handles DataGridView1.CellFormatting
        DataGridView1.Rows(e.RowIndex).HeaderCell.Value = CStr(e.RowIndex + 1)
    End Sub

My problem is that the autoincremented row value is not included in exporting to excel.
I want it to be included in first column(A) in excel.

Imports Microsoft.Office.Interop

Public Class Form1

    Private Sub DataGridView1_CellFormatting(sender As Object, e As System.Windows.Forms.DataGridViewCellFormattingEventArgs) Handles DataGridView1.CellFormatting
        DataGridView1.Rows(e.RowIndex).HeaderCell.Value = CStr(e.RowIndex + 1)
    End Sub

    Private Sub releaseObject(ByVal obj As Object)
        Try
            System.Runtime.InteropServices.Marshal.ReleaseComObject(obj)
            obj = Nothing
        Catch ex As Exception
            obj = Nothing
        Finally
            GC.Collect()
        End Try
    End Sub

    Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
        Dim xlApp As Excel.Application
        Dim xlWorkBook As Excel.Workbook
        Dim xlWorkSheet As Excel.Worksheet
        Dim misValue As Object = System.Reflection.Missing.Value
        Dim i As Integer
        Dim j As Integer

        xlApp = New Excel.Application
        xlWorkBook = xlApp.Workbooks.Add(misValue)
        xlWorkSheet = xlWorkBook.Sheets("sheet1")

        For i = 0 To DataGridView1.RowCount - 2
            For j = 0 To DataGridView1.ColumnCount - 1
                xlWorkSheet.Cells(i + 18, j + 2) = DataGridView1(j, i).Value.ToString()
            Next
        Next


        xlWorkSheet.SaveAs("C:\Users\Programmer RBP\Desktop\vbexcel.xlsx")
        xlWorkBook.Close()
        xlApp.Quit()

        releaseObject(xlApp)
        releaseObject(xlWorkBook)
        releaseObject(xlWorkSheet)

        MsgBox("You can find the file C:\Users\Programmer RBP\Desktop\vbexcel.xlsx")
    End Sub
End Class

The output in excel:

A | B | C | D | E
-------------------------------------------------------------
| Juan Cruz | 31 | 2/24/1988 | Undergraduate
| John Wayne| 31 | 1/05/1988 | Graduate
| Jason Dack| 31 | 2/14/1988 | Undergraduate


What I want or expected output:

A | B | C | D | E
-------------------------------------------------------------
1 | Juan Cruz | 31 | 2/24/1988 | Undergraduate
2 | John Wayne| 31 | 1/05/1988 | Graduate
3 | Jason Dack| 31 | 2/14/1988 | Undergraduate

What I have tried:

Public Class Form1

    Private Sub DataGridView1_CellFormatting(sender As Object, e As System.Windows.Forms.DataGridViewCellFormattingEventArgs) Handles DataGridView1.CellFormatting
        DataGridView1.Rows(e.RowIndex).HeaderCell.Value = CStr(e.RowIndex + 1)
    End Sub

    Private Sub releaseObject(ByVal obj As Object)
        Try
            System.Runtime.InteropServices.Marshal.ReleaseComObject(obj)
            obj = Nothing
        Catch ex As Exception
            obj = Nothing
        Finally
            GC.Collect()
        End Try
    End Sub

    Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
        Dim xlApp As Excel.Application
        Dim xlWorkBook As Excel.Workbook
        Dim xlWorkSheet As Excel.Worksheet
        Dim misValue As Object = System.Reflection.Missing.Value
        Dim i As Integer
        Dim j As Integer

        xlApp = New Excel.Application
        xlWorkBook = xlApp.Workbooks.Add(misValue)
        xlWorkSheet = xlWorkBook.Sheets("sheet1")

        For i = 0 To DataGridView1.RowCount - 2
            For j = 0 To DataGridView1.ColumnCount - 1
                xlWorkSheet.Cells(i + 18, j + 2) = DataGridView1(j, i).Value.ToString()
            Next
        Next


        xlWorkSheet.SaveAs("C:\Users\Programmer RBP\Desktop\vbexcel.xlsx")
        xlWorkBook.Close()
        xlApp.Quit()

        releaseObject(xlApp)
        releaseObject(xlWorkBook)
        releaseObject(xlWorkSheet)

        MsgBox("You can find the file C:\Users\Programmer RBP\Desktop\vbexcel.xlsx")
    End Sub
End Class