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string str = "update adaddress set shenhe=" + ck + " ,shentime=getDate() where id=" + uid + "";
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DateTime.Now.ToLocalTime().ToString();          // 2009-9-5 20:12:12
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DateTime.Now.ToLongDateString().ToString();     // 2009Äê9ÔÂ5ÈÕ
DateTime.Now.ToShortDateString().ToString();    // 2009-9-5
DateTime.Now.ToString("yyyy-MM-dd");            // 2009-09-05    
DateTime.Now.ToString("yyyyMMddhhmmss");        // 20090905120000¡¡
DateTime.Now.Date.ToString();                   // 2009-9-5 0:00:00
DateTime.ToFileTime().ToString();               // 128650040212500000
DateTime.Now.ToFileTimeUtc().ToString();        // 128650040772968750
DateTime.Now.ToOADate().ToString();             // 39695.8461709606
DateTime.Now.ToUniversalTime().ToString();
//»ñȡʱ¼ä
DateTime.Now.ToLongTimeString().ToString();     // 20:16:16
DateTime.Now.ToShortTimeString().ToString();    // 20:16    ¡¡
DateTime.Now.ToString("hh:mm:ss");              // 09:05:57    ¡¡
DateTime.Now.TimeOfDay.ToString();              // 20:33:50.7197500
//ÆäËû
DateTime.ToFileTime().ToString();   &n


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