How to remove row position from the WinForms GridControl?

//Hooks the event in the Form_Load to remove the rows in a Grid.
this.btnRemove.Click += new System.EventHandler(this.btnRemove_Click);
private void btnRemove_Click(object sender, EventArgs e)
{         
    int n= Convert.ToInt16(textBox1.Text);
    //Removes the range of rows form (top, bottom).
    this.gridControl1.Rows.RemoveRange(n,n);
}

'Hooks the event in the Form_Load to remove the rows in a Grid.
Private Me.btnRemove.Click += New System.EventHandler(AddressOf Me.btnRemove_Click)
Private Sub btnRemove_Click(ByVal sender As Object, ByVal e As EventArgs)
    Dim n As Integer= Convert.ToInt16(textBox1.Text)
    'Removes the range of rows form (top, bottom).
    Me.gridControl1.Rows.RemoveRange(n,n)
End Sub