标准控件（二）——Calendar

    protected void Calendar1_DayRender(object sender, DayRenderEventArgs e)
    {
        //1、清掉每个日期格中的所有控件。
        e.Cell.Controls.Clear();

        //2、为每个日期格添加一个格头
        Label lblHead = new Label();
        lblHead.Text = e.Day.Date.Day.ToString();    //获取格中的日期
        lblHead.Width = Unit.Percentage(100);
        lblHead.BackColor = System.Drawing.Color.FromName("orange");
        lblHead.Font.Bold = true;

        //3、给lblHead加上双击弹出添加日程功能
        lblHead.Attributes.Add("ondblclick","window.open(‘Add.aspx?d="+e.Day.Date.ToString("yyyy-MM-dd")+"‘,‘_blank‘,‘width=500 height=400 toolbar=no‘)");

        e.Cell.Controls.Add(lblHead);

        //4、查询数据库，加载每天的事件信息
        var query = _Context.RiCheng.Where(p=>p.Date == e.Day.Date);
        foreach (RiCheng data in query)
        {
            Label lblItem = new Label();
            lblItem.Attributes.Add("key", data.Ids.ToString());
            lblItem.CssClass = "dayitem";
            lblItem.Text = data.Title;
            lblItem.Width = Unit.Percentage(100);
            lblItem.BackColor = System.Drawing.Color.FromName(data.Color);

            e.Cell.Controls.Add(lblItem);
        }
    }