Calendar使用的一些技巧

 1     protected void Calendar1_SelectionChanged(object sender, EventArgs e)
 2     {
 3         Label1.Text = Calendar1.SelectedDate.ToShortDateString();
 4     }
 5     protected void Button1_Click(object sender, EventArgs e)
 6     {
　　　　　　//这里使用三层来将数据添加到数据库
 7         DateTime day = Calendar1.SelectedDate;
 8         string msg = TextBox1.Text;
 9 
10         Calender calender = new Calender();
11         CalenderBll bll = new CalenderBll();
12 
13         calender.Msgtime = day;
14         calender.UserID = Session["UserID"].ToString();
15         calender.Msg = msg;
16         calender.Createtime = DateTime.Now;
17 
18         if (!bll.Exists(day))
19         {
20             if (bll.Add(calender))
21             {
22                 Response.Write("<script>alert(‘发布成功！‘);");
23             }
24             else
25             {
26                 Response.Write("<script>alert(‘发布失败！‘)</script>");
27             }
28 
29         }
30         else
31         {
32             Response.Write("<script>alert(‘该日期时间已存在！‘)</script>");
33         }
34     }
35     protected void Calendar1_DayRender(object sender, DayRenderEventArgs e)
36     {
37         if (e.Day.Date< DateTime.Now )
38         {
39             e.Day.IsSelectable = false;//用来控制该日是否可以选取
40         }
41     }

 1  protected void Calendar1_DayRender(object sender, DayRenderEventArgs e)
 2     {
 3         DateTime today = DateTime.Today;
 4         DataSet dt = new DataSet();
 5         
 6         //这里使用了三层架构来从数据库中获取具有消息事件的日期和相应的消息
 7         CalenderBll calbll = new CalenderBll();
 8 //注意AddDays方法的使用，来遍历当天前后30天的事件
 9         string begin = today.AddDays(Convert.ToDouble(-30)).ToString();
10         string to = today.AddDays(Convert.ToDouble(30)).ToString();
11 
12         dt = calbll.GetList(begin, to);
13         if (dt !=null)
14         {
15             for (int i = 0; i < dt.Tables[0].Rows.Count; i++)
16             {
17                 string day = dt.Tables[0].Rows[i]["Msgtime"].ToString();
18                 if (e.Day.Date.ToString().Substring(0,10) == day.Substring(0,10))
19                 {
20                     e.Cell.BackColor = System.Drawing.Color.Red;
21                     //下面是次愚蠢的尝试，如果不修改cell.text则导致日期旁边出现数字，尽管可以修改为标志或图片，但是会影响布局
22                     //半天才搞明白，为啥不在原来的基础上给他添加上链接啊，真是脑袋想不清。
23                     //e.Cell.Controls.Add(new LiteralControl("<a href=‘javascript:void(0)‘ onclick="+‘"‘+"showmsg(‘"+dt.Tables[0].Rows[i]["Msg"]+"‘)"+‘"‘+">"+e.Day.DayNumberText+"</a>"));
24                     e.Cell.Text ="<a href=‘javascript:void(0)‘ onclick="+‘"‘+"showmsg(‘"+dt.Tables[0].Rows[i]["Msg"]+"‘)"+‘"‘+">"+e.Day.DayNumberText+"</a>";
25                 }
26             }
27         }