RowHeader Column in WinForm DatagridView

In Winforms, Datagridview does not give direct way to customise first column i.e. Rowheaders. Following Code gives the details how to build Rowheader column with user defined Header text and column values.

Public Class frmDataGridView

    Private Sub frmDataGridView_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        'Dummy Data to fill the grid
        Dim dt As New DataTable()
        dt.Columns.Add("FirstName")
        dt.Columns.Add("LastName")

        For j As Integer = 1 To 6
            dt.Rows.Add("DotNet" & j.ToString(), "DotNet" & j.ToString())
        Next

        Me.DataGridView1.DataSource = dt
        Me.DataGridView1.Columns(0).Width = 70

        'Header text for first column
        DataGridView1.TopLeftHeaderCell.Value = "Sr.No."
        'To hide the triangular arrow 
        Me.DataGridView1.RowHeadersDefaultCellStyle.Padding = New Padding(3)
        'To hide the last row(Default newrow)
        DataGridView1.AllowUserToAddRows = False

        'Generate row numbers 
        AddRowHeaders()
    End Sub

    Private Sub AddRowHeaders()
        ' Add values to rowheader cell.
        For i As Integer = 0 To DataGridView1.Rows.Count - 1
            DataGridView1.Rows(i).HeaderCell.Value = (i + 1).ToString()
            DataGridView1.Rows(i).HeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleCenter
        Next i
    End Sub

    Private Sub DataGridView1_DataBindingComplete(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewBindingCompleteEventArgs) Handles DataGridView1.DataBindingComplete
        AddRowHeaders()
    End Sub
End Class