Nullable DateTime?
Solution 1
You can just do this instead:
public DateTime? TimeStamp { get; set; }
If you were having trouble with the compiler it's probably because you only changed one of the associated parts - either the private
member variable or the property's data type. They need to match, of course, and auto-properties handles that for you nicely.
EDIT Just to further clarify, DateTime?
is not merely decorated with an ?
attribute - it's entirely different from DateTime
. DateTime?
is shorthand for Nullable<DateTime>
, which is a generic (Nullable<T>
) that provides nullable support to non-reference types by wrapping the generic parameter T
, which is a struct
.
Solution 2
You can create the property in the same way as a normal DateTime
property:
public DateTime? TimeStamp { get; set; }
Solution 3
private DateTime? mTimeStamp;
public DateTime? TimeStamp
{
get { return mTimeStamp; }
set { mTimeStamp = value; }
}
or, if you are using .net 3.0+
public DateTime? TimeStamp {get;set;}
Solution 4
You should be able to make a DateTime nullable in this way:
private DateTime? mTimeStamp;
public DateTime? TimeStamp
{
get { return mTimeStamp; }
set { mTimeStamp = value; }
}
You can use this modifier on other types as well. Read up here: http://msdn.microsoft.com/en-us/library/1t3y8s4s%28v=VS.100%29.aspx
Solution 5
A nullable DateTime is a discrete type from a regular DateTime and can be used like any other type. So your code would be:
private DateTime? mTimeStamp;
public DateTime? TimeStamp
{
get { return mTimeStamp; }
set { mTimeStamp = value; }
}
Comments
-
hazem almost 2 years
how to create setter and getter Properties for nullable datetime. for example:
private DateTime mTimeStamp; public DateTime TimeStamp { get { return mTimeStamp; } set { mTimeStamp = value; } }
Does nullable attributes support setter and getter or have i to declare it public?
private DateTime? mTimeStamp; public DateTime TimeStamp { }