private void sb_add_Click(object sender, System.EventArgs e)
        {
            FEditNotice editNotice = new FEditNotice();
            editNotice.Show();            
        }

public partial class FEditNotice : UIEditForm
    {
        Notice notice = new Notice();
        bool isEditMode = false;//默认为添加模式
        public FEditNotice()
        {
            InitializeComponent();
        }
        public FEditNotice(Notice notice)
        {
            InitializeComponent();
            isEditMode = true;
            this.notice = notice;
            this.txtTitle.Text = notice.title;
            this.txtContent.Text = notice.content;
            this.btnOK.Text = "修改";
        }

        protected override bool CheckData()
        {
            return CheckEmpty(txtTitle, "请输入标题")
                   && CheckEmpty(txtContent, "请输入正文");
        }

        private void FEdit_Load(object sender, System.EventArgs e)
        {

        }

        private void btnOK_Click_1(object sender, System.EventArgs e)
        {
            if(IsOK)
            {
                notice.title = this.txtTitle.Text;
                notice.content = this.txtContent.Text;
                notice.author_id = 1;
                notice.time = DateTime.Now;
                if (isEditMode)
                {
                    int row = Notice.Update(notice);
                    ShowSuccessTip("修改成功");
                }
                else
                {
                    Notice.Insert(notice);
                    ShowSuccessTip("发布成功");                   
                }
                Close();
            }           
        }

        private void btnCancel_Click(object sender, EventArgs e)
        {
            if(isEditMode)
            {
                ShowSuccessTip("已取消修改");
            }
            else
            {
                ShowSuccessTip("已取消发布");
            }
            
        }
    }