public frmVcard(Jid jid, XmppClientConnection con)
{
this.InitializeComponent();
this._connection = con;
this.Text = "名片 : " + jid.get_Bare();
VcardIq iq = new VcardIq(0, new Jid(jid.get_Bare()));
this.packetId = iq.get_Id();
con.get_IqGrabber().SendIq(iq, new IqCB(this, (IntPtr) this.VcardResult), null);
}