Access Non-Public members of a GridViewCommandEventArgs object

<asp:GridView ID="MyGridView" runat="server" OnRowCommand="MyGirdView_OnRowCommand">
    <Columns>
        <asp:TemplateField>
            <ItemTemplate>
                <asp:LinkButton
                 id="MyLinkButton"
                 runat="server"
                 CommandName="MyCommand"
                />
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

protected void MyGirdView_OnRowCommand(object sender, GridViewCommandEventArgs e)
{
    //need to access row index here....
}

LinkButton lb = (LinkButton) ((GridViewCommandEventArgs)e.CommandSource);

LinkButton lb = e.CommandSource as LinkButton;
GridViewRow gvr = lb.Parent.Parent as GridViewRow;
int gvr = gvr.RowIndex;

LinkButton lb = (LinkButton) ((GridViewCommandEventArgs)e.CommandSource);
GridViewRow gr = (GridViewRow) lb.Parent.Parent;
var id = gr.RowIndex;

var id = ((GridViewRow)((LinkButton)((GridViewCommandEventArgs)e).CommandSource).Parent.Parent).RowIndex;