本文實例講述了asp.net基于Calendar實現blog日歷功能。分享給大家供大家參考，具體如下：
怎樣用.net的Calendar控件來實現blog中站點日歷的效果呢,我們知道站點日歷最重要的功能就是,顯現在哪天blog主人寫了日志,點擊日期,你將進入所選日期的日志列表,
首先，我們知道.net中的服務器控件是會進行Postback的，Calendar控件中的第一天在點擊時，就會進行一次postback我們要做的就是改變它默認的鏈接，使它不觸發postback事件，其次，就是要知道哪一天有沒有日志。至于有沒有日志，就要去數據庫查詢了。
在Calendar中有一個DayRender事件，該事件在呈現每一天時觸發，我們可以從這里入手,首先定義一個數組變量:
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private int[] arrCurrentDays, arrPreDays, arrNextDays; //三個變量分別是當前月，前一月，和下一個月private int intCurrentMonth, intPreMonth, intNextMonth; //三個整型數組存放相對月份寫有blog的日期 |
然后在Calendar的DayRender事件中寫下如下代碼:
- CalendarDay d = ((DayRenderEventArgs)e).Day;
- TableCell c = ((DayRenderEventArgs)e).Cell;
- // 初始化當前月有Blog的日期數組
- if (intPreMonth == 0)
- {
- intPreMonth = d.Date.Month; // 注意：日歷控件初始化時我們得到的第一個月并不是當前月，而是前一個月的月份
- intCurrentMonth = intPreMonth + 1;
- if (intCurrentMonth > 12)
- intCurrentMonth = 1;
- intNextMonth = intCurrentMonth + 1;
- if (intNextMonth > 12)
- intNextMonth = 1;
- arrPreDays = getArrayDay(d.Date.Year, intPreMonth); //得到前一個月有blog的日期數組
- arrCurrentDays = getArrayDay(d.Date.Year, intCurrentMonth);//得到當月有blog的日期數組
- arrNextDays = getArrayDay(d.Date.Year, intNextMonth);//得到下個月有blog的日期數組
- }
- int j = 0;
- if (d.Date.Month.Equals(intPreMonth))
- {
- while (!arrPreDays[j].Equals(0))
- {
- if (d.Date.Day.Equals(arrPreDays[j]))
- {
- c.Controls.Clear();
- c.Controls.Add(new LiteralControl("<a href="day.aspx?year=" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" mce_href="day.aspx?year=" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" " + d.Date.Year + "&month=" +
- d.Date.Month + "&day=" + d.Date.Day + ">" + d.Date.Day + "</a>"));
- }
- j++;
- }
- }
- else if (d.Date.Month.Equals(intCurrentMonth))
- {
- while (!arrCurrentDays[j].Equals(0))
- {
- if (d.Date.Day.Equals(arrCurrentDays[j]))
- {
- c.Controls.Clear();
- c.Controls.Add(new LiteralControl("<a href="day.aspx?year=" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" mce_href="day.aspx?year=" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" " + d.Date.Year + "&month=" +
- d.Date.Month + "&day=" + d.Date.Day + " title=查看"+d.Date.Day+"日日志>" + d.Date.Day + "</a>"));
- }
- j++;
- }
- }
- else if (d.Date.Month.Equals(intNextMonth))
- {
- while (!arrNextDays[j].Equals(0))
- {
- if (d.Date.Day.Equals(arrNextDays[j]))
- {
- c.Controls.Clear();
- c.Controls.Add(new LiteralControl("<a href="day.aspx?year=" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" mce_href="day.aspx?year=" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" " + d.Date.Year + "&month=" +
- d.Date.Month + "&day=" + d.Date.Day + ">" + d.Date.Day + "</a>"));
- }
- j++;
- }
在這里我們注意的是getArrayDay()方法是從數據庫里查詢當月是否有日志的方法,它返回的是一個數組,我寫的內容如下:
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public int[] getArrayDay(int intYear, int intMonth){ int[] intArray = new int[31]; //從數據庫里選取符合要求的記錄，將日期存入數組 string strSql = "select data from test where year(data)=" + intYear + " and month(data)=" + intMonth; //調用DbHelperOleDb自定義類中的ExecuteReader方法,它返回的是一個OleDbDataReader型 OleDbDataReader dr = dbAccess.DbHelperOleDb.ExecuteReader(strSql); int i = 0; while (dr.Read()) { if (i == 0) { intArray[i] = Convert.ToDateTime(dr["data"].ToString()).Day; string a=Convert.ToString(intArray[i]); i++; } else if (Convert.ToDateTime(dr["data"].ToString()).Day != intArray[i - 1]) { intArray[i] = Convert.ToDateTime(dr["data"].ToString()).Day; i++; } } return intArray;} |
ok ,這樣就行了,我們運行一下就可以看到效果了..
希望本文所述對大家asp.net程序設計有所幫助。
