private void addAnExtraItem(subExtra subExt)
{
Model.Course course = courseRef;
if (!course.containsExtra(subExt.name))
{
course.addExtra(subExt);
GlobalStation.shareInstance.librarySave(delegate() {
mainGrid.Columns.Add(init_createColumn(subExt));
}, delegate() {
course.removeExtra(subExt.UUID);
});
}
else
{
HKConfirmForm.showConfirmForm("已有同名的考勤项目存在");
}
}