arcgis 10.0 - Is there a way to automatically increment the Version value in the Config.esriaddinx file?

I don't think there is an out-of-the-esri-box way to do this, but has anyone hacked up a way to change this value automatically for a build? Perhaps using a pre-build event command?

Answer

The Python option works for me:

c:\Python26\ArcGIS10.0\python.exe C:\sandbox\py\misc\UpdateAddInVersionNumber.py "$(ProjectDir)Config.esriaddinx"

(Python gurus, feel free to jump in and make it better) UpdateAddInVersionNumber.py:

import os, sys
import xml.dom.minidom

import datetime

filename = sys.argv[1]
print filename

b = 0

doc = xml.dom.minidom.parse(filename)

tags = doc.getElementsByTagName('Version')


if (len(tags)==1):
    currentNodeValue =  tags[0].childNodes[0].toxml()
    tokens = currentNodeValue.split('.')
    lastToken = tokens[len(tokens) -1]
    if lastToken.isnumeric():
        i = int(lastToken)
        i +=1       
        tokens[len(tokens) -1] = str(i)
        newVersionNumberValue='.'.join(tokens)

        tags[0].childNodes[0].nodeValue = newVersionNumberValue
        b = 1
        print newVersionNumberValue


tags = doc.getElementsByTagName('Date')
if (len(tags)==1):
    tags[0].childNodes[0].nodeValue =datetime.datetime.now().strftime("%Y-%m-%d %H:%M")
    b = 1
    print tags[0].childNodes[0].nodeValue


if (b==1):
    f = open(filename,'wb')
    doc.writexml(f,encoding= 'utf-8')
    f.close()

sys.exit()