# <version>

Increments a four-part version number stored in a text file. The resulting version number is written back to the file and exposed using NAnt properties.

The version number format in the text file is Major.Minor.Build.Revision, e.g. 1.0.5.25.

Major | Set in file.
Minor | Set in file.
Build | Can be incremented by setting the `buildtype` parameter.
Revision | Can be incremented by setting the `revisiontype` parameter.

The following NAnt properties are created:

`prefix`.version | The complete version number, i.e. Major.Minor.Build.Revision
`prefix`.major | The major component of the version number.
`prefix`.minor | The minor component of the version number.
`prefix`.build | The build component of the version number.
`prefix`.revision | The revision component of the version number.

### Parameters

Attribute | Type | Description | Required
--- | --- | --- | ---
buildtype | BuildNumberAlgorithm | The algorithm for generating build number. The default is `MonthDay`. | False
path | file | Path to the file containing the current version number. The default file is `'build.number'` in the project base directory. | False
prefix | string | The string to prefix the properties with. The default is `'buildnumber.'`. | False
revisiontype | RevisionNumberAlgorithm | The algorithm for generating revision number. The default is `Automatic`. | False
startdate | datetime | Start of project. Date from which to calculate build number. Required if `MonthDay` is used as `buildtype`. | False
failonerror | bool | Determines if task failure stops the build, or is just reported. The default is true. | False
if | bool | If true then the task will be executed; otherwise, skipped. The default is true. | False
unless | bool | Opposite of `if`. If false then the task will be executed; otherwise, skipped. The default is false. | False
verbose | bool | Determines whether the task should report detailed build log messages. The default is false. | False

### Requirements

Assembly: NAnt.Contrib.Tasks (0.85.2479.0)