问题描述
如果我需要为日期变量分配一个NULL值,我该怎么办呢?
这样做?现在我正在使用01-01-2001,但我不想使用
areal日期,如果日期真的应该是NULL。
感谢您提供的信息。
If I need to assign a NULL value to a date variable, how would I go about
doing that? For right now I am using 01-01-2001, however I don''t want to use
a "real" date if the date should really be NULL.
Thanks for the information.
推荐答案
将其声明为Object或使用''WrappedDate''并指定Nothing代表
Null。
Class WrappedDate
public value as date
public sub New(value作为日期)
me.value = value
end sub
end class
Armin
Declare it as Object or use a ''WrappedDate'' and assign Nothing to represent
Null.
Class WrappedDate
public Value as date
public sub New(value as date)
me.value =value
end sub
end class
Armin
请参阅:
< URL:http://www.google .to / groups?threadm =%23wkAjb1mDHA.2080%40TK2MSFTNGP10.p hx.gbl>
-
MS Herfried K. Wagner
MVP< URL:http://dotnet.mvps.org/>
VB< URL:http://classicvb.org/petition/>
See:
<URL:http://www.google.to/groups?threadm=%23wkAjb1mDHA.2080%40TK2MSFTNGP10.p hx.gbl>
--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://classicvb.org/petition/>
我使用Date.MinValue来表示null日期。这很好用。
-
(O)enone
I use Date.MinValue to represent a "null" date. This works very nicely.
--
(O) e n o n e
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