/// <summary>
/// dt1-dt2的天数
/// </summary>
/// <param name="dt1"></param>
/// <param name="dt2"></param>
/// <returns></returns>
public static DoubleStd DayDiff(DateTimeStd dt1, DateTimeStd dt2)
{
if (dt1 == null || dt2 == null)
{
return(null);
}
else
{
TimeSpan ts = dt1 - dt2;
return(DoubleStd.ParseStd(ts.TotalDays));
}
}
/// <summary>
/// 将Object转化成DoubleStd数据
/// </summary>
/// <param name="o"></param>
/// <returns></returns>
public static DoubleStd ParseStd(object o)
{
if (IsDouble(o))
{
DoubleStd rtn = new DoubleStd();
rtn.Value = double.Parse(o.ToString());
return(rtn);
}
else
{
return(null);
}
}
/// <summary>
/// 判斷字符串是否可以转换成doubleStd类型
/// </summary>
/// <param name="s"></param>
/// <param name="o1"></param>
/// <returns></returns>
public static bool TryParse(string s, ref DoubleStd o1)
{
double d;
if (double.TryParse(s, out d))
{
o1.Value = d;
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// 判斷字符串是否可以转换成doubleStd类型
/// </summary>
/// <param name="s"></param>
/// <param name="ns"></param>
/// <param name="formatprovider"></param>
/// <param name="o1"></param>
/// <returns></returns>
public static bool TryParse(string s, NumberStyles ns, IFormatProvider formatprovider, ref DoubleStd o1)
{
double d;
if (o1 == null)
{
o1 = new DoubleStd();
}
if (double.TryParse(s, ns, formatprovider, out d))
{
o1.Value = d;
return(true);
}
else
{
return(false);
}
}
public int CompareTo(DoubleStd other)
{
return(this.Value.CompareTo(other.Value));
}