cn.jpush.api.schedule.TriggerPayload.setStart C# (CSharp) Method

        public void setStart(String start)
        {
            Preconditions.checkArgument(!String.IsNullOrEmpty(start), "The time must not be empty.");
            Preconditions.checkArgument(StringUtil.IsDateTime(start), "The start is not valid.");
            this.single = null;
            this.periodical.setStart(start);
        }