C#实现在购物车系统中生成不重复订单号的方法

本文实例讲述了C#实现在购物车系统中生成不重复订单号的方法。分享给大家供大家参考。具体分析如下：

订单号在购物过程中起到了很好的识别作用，更方便的有利于工作人员识别商品，代码如下：

#region 生成单据号
/// <summary>
/// 生成单据号
/// </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

希望本文所述对大家的C#程序设计有所帮助。