【C#日期系列（二）】--C#获取一段时间有多少个星期几

#region 统计一段时间内有多少个星期几
///<summary>
///统计一段时间内有多少个星期几
///</summary>
///<param name="AStart">开始日期</param>
///<param name="AEnd">结束日期</param>
///<param name="AWeek">星期几</param>
///<returns>返回个数</returns>
public static int TotalWeeks(DateTime AStart, DateTime AEnd, DayOfWeek AWeek)
{
TimeSpan vTimeSpan = new TimeSpan(AEnd.Ticks - AStart.Ticks);
int Result = (int)vTimeSpan.TotalDays / 7;
for (int i = 0; i <= vTimeSpan.TotalDays % 7; i++)
if (AStart.AddDays(i).DayOfWeek == AWeek)
return Result + 1;
return Result;
}
#endregion