public class User
{
private DateTime _version;
public User()
{
}

//timestamp
public DateTime Version
{
get { return _version; }
set { _version = value;}
}
}

in config file ,how to setting timestamp?
thank you

There is a <version>-Tag you can use for that. It looks like


You can also use the <timestamp>-Tag.


For further detail look here.

you said I try to .
config file to:
<timestamp name="Version" column="Version" access="field"/>
error message:
element namespace“urn:nhibernate-mapping-2.0”into“class”。 to child element namespace“urn:nhibernate-mapping-2.0”in to“timestamp”。 not valid
I think that Nhibernate 1.0.2 not support timestamp

then I retry :
config file to:
<version name="Version" column="Version" access="field"/>
error message:
element namespace“urn:nhibernate-mapping-2.0”into“class”。 to child element namespace“urn:nhibernate-mapping-2.0”中的“version”。 not valid



help me ! thank you

Hi guoshaohong1979,

sorry that was my fault. You have to place the <version> or <timestamp> tag directly beneath the <id> tag.

Example


Hope that helped.

eg

first thanks the vistors!
I try to method of above,no solve problem,
hope to have good answer
thank you!

Hmm..., can you post the complete XML please?

eg

as i had the same problem: only one timestamp or version field is allowed, otherwise nhibernate throws an XmlSchemaException. The <timestamp> or <version> has to be placed directly below the <id> or <discriminator> declaration.

Example:



after the single version declaration there must not be another version or timestamp. I tried to use the timestamp for several timestamp fields (date of creation, last edit, date of delete) and ran into this...

The <version> and <timestamp> have special meaning to NHIbernate, and their value is managed by NHibernate, so there is no sense of having multiple of them.

If You want to map database field of type TimeStamp, use ordinary property mapping with tyep="Timestamp"

e.g.


Gert

i know, already did it that way. This was just the way i discovered this behavior.