protected override object CastFromImp(DateTimeViewColumnType viewColumnType, object viewColumnValue)
{
long ret = 0;
System.DateTime d = (System.DateTime)viewColumnValue;
long.TryParse(d.ToString("yyyyMMdd"), out ret);
return(ret);
}
protected override object CastFromImp(DateTimeViewColumnType viewColumnType, object viewColumnValue)
{
decimal ret = default(decimal);
System.DateTime d = (System.DateTime)viewColumnValue;
decimal.TryParse(d.ToString("yyyyMMdd"), out ret);
return(ret);
}
protected override object CastFromImp(DateTimeViewColumnType viewColumnType, object viewColumnValue)
{
return((System.DateTime)viewColumnValue);
}
protected override object CastFromImp(DateTimeViewColumnType viewColumnType, object viewColumnValue)
{
System.DateTime d = (System.DateTime)viewColumnValue;
// 0001/01/01 00:00:00 以外はtrueと見做す
return(!(d == new System.DateTime(1, 1, 1, 0, 0, 0)));
}
protected override object CastFromImp(DateTimeViewColumnType viewColumnType, object viewColumnValue)
{
return(this.GetNullValue());
}
protected override object CastFromImp(DateTimeViewColumnType viewColumnType, object viewColumnValue)
{
return(viewColumnValue.ToString());
}
