Add In: Open standard dialogs in Visual Studio

I'm writing a Visual Studio extension and would like to open the Connect to Team Foundation Server standard dialog on click.

I was able to do so utilizing the DTE2.ExecuteCommand method like DTE2.ExecuteCommand("Team.ConnecttoTeamFoundationServer") but I feel that there must be a better way to do that then using Visual Studio macros.

Any help is most appreciated. Thanks in advance!