本文實例講述了C#實現在購物車系統中生成不重復訂單號的方法。分享給大家供大家參考。具體分析如下：
訂單號在購物過程中起到了很好的識別作用，更方便的有利于工作人員識別商品，代碼如下：
#region 生成單據號/// <summary>/// 生成單據號/// </summary>/// <param name="pFromType"></param>/// <returns></returns>public static string GetFormCode(FormType pFromType){ string formcode = ""; switch(pFromType) { case FormType.CaiGou: { formcode = "CG"; break; } case FormType.ChaiXie: { formcode = "CX"; break; } case FormType.ChuKu: { formcode = "CK"; break; } case FormType.LingLiao: { formcode = "LL"; break; } case FormType.PeiChang: { formcode = "PC"; break; } case FormType.RuKu: { formcode = "RK"; break; } case FormType.ShengChan: { formcode = "SC"; break; } case FormType.SunYi: { formcode = "SY"; break; } case FormType.TuiHuo: { formcode = "TH"; break; } case FormType.XiaoShou: { formcode = "XS"; break; } case FormType.PeiSong: { formcode = "PS"; break; } case FormType.ZengPin: { formcode = "ZP"; break; } case FormType.FuKuan: { formcode = "FK"; break; } case FormType.ShouKuan: { formcode = "SK"; break; } } formcode += DateTime.Now.Year.ToString(); formcode += DateTime.Now.Month.ToString().Length == 1?"0" + DateTime.Now.Month.ToString() : DateTime.Now.Month.ToString(); formcode += DateTime.Now.Day.ToString().Length == 1?"0" + DateTime.Now.Day.ToString() : DateTime.Now.Day.ToString(); formcode += DateTime.Now.Hour.ToString().Length == 1?"0" + DateTime.Now.Hour.ToString() : DateTime.Now.Hour.ToString(); formcode += DateTime.Now.Minute.ToString().Length == 1?"0" + DateTime.Now.Minute.ToString() : DateTime.Now.Minute.ToString(); formcode += DateTime.Now.Second.ToString().Length == 1?"0" + DateTime.Now.Second.ToString() : DateTime.Now.Second.ToString(); if(DateTime.Now.Millisecond.ToString().Length == 1) { formcode += "00" + DateTime.Now.Millisecond.ToString(); } else if (DateTime.Now.Millisecond.ToString().Length == 2) { formcode += "0" + DateTime.Now.Millisecond.ToString(); } else { formcode += DateTime.Now.Millisecond.ToString(); } return formcode;}#endregion希望本文所述對大家的C#程序設計有所幫助。
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