Get DataKeyName value on rowcommand and rowdatabound event in asp.net

Simplest way to get Datakeyname Value  on rowcommand and rowdatabound event in asp.net

<asp:GridView ID="Grd" runat="server  DataKeyNames="rowid , Status , Sender , sscalltime"

                                             

 onrowcommand="GridINfo_RowCommand"  onrowdatabound="GridINfo_RowDataBound">

                                            <Columns>

<asp:TemplateField ItemStyle-Width="120px" >

                                                    <ItemTemplate> <asp:Button ID="Button2"  CssClass="button-blue" runat="server"  CommandName="Note" Text="Add Note"/>

                                                   

                                                     </ItemTemplate>

                                                    </asp:TemplateField>

</Columns>

                                        </asp:GridView>

protected void GridINfo_RowDataBound(object sender, GridViewRowEventArgs e)

    {

        if (e.Row.RowType == DataControlRowType.Header)

        {

        }

        if (e.Row.RowType == DataControlRowType.DataRow)

        {

            string Status = Convert.ToString(GridINfo.DataKeys[e.Row.RowIndex].Values["Status"]);

        }

    }

  protected void GridINfo_RowCommand(object sender, GridViewCommandEventArgs e)

    {

        if (e.CommandName == "Note")

        {

             GridViewRow row = (GridViewRow)(((Button)e.CommandSource).NamingContainer);

             int rowIndex = row.RowIndex;   //Convert.ToInt32(e.CommandArgument);

            string ID = Convert.ToString(GridINfo.DataKeys[rowIndex].Values["rowid"]);

        }

}