private void barButtonItem6_ItemClick(object sender, ItemClickEventArgs e) { Waiting.ShowWaitForm(); if (!Class.App.IsFocusForm(typeof(Forms.frmDeviceList_Request), this)) { //Class.NW_SignalLog cls = new Class.NW_SignalLog(); //cls.DeleteFor30Day(); Forms.frmDeviceList_Request frm = new Forms.frmDeviceList_Request(); frm.MdiParent = this; frm.Show(); } Waiting.CloseWaitForm(); }