version-assemblyinfo

    $directoryPath = Split-Path ((Get-Variable MyInvocation).Value).MyCommand.Path               # directory the script is running from (document root)
    $assemblyFile = "$directoryPath\src\My Project\AssemblyInfo.vb"                              # AssemblyInfo file path


    # Function which changes the AssemblyInfo.cs  file with the current version 
    # found at: http://restoncode.azurewebsites.net/blog/2012/12/03/change-assembly-version-with-powershell/
    # modified to have a stricter regex.
    function ChangeAssemblyInfo {
        $RegularExpression = [regex] '\<Assembly\:\ AssemblyVersionAttribute\(\"\d+\.\d+\.\d+\.\*\"\)\>'

        # Get the Content of the file and store it in the  variable 
        $fileContent = Get-Content $assemblyFile
        Clear-Content $assemblyFile
        foreach($content in $fileContent)
        {
          $value=$content -match $RegularExpression
          if($value -eq $true) {
            "'"+$content+"'" -match "(\d+).(\d+).(\d+).(\*)"
            $majorVersion=$matches[1] -as [int]
            $minorVersion=$matches[2] -as [int]
            $buildNumer=$matches[3] -as [int]
            $buildNumer= $buildNumer+1
            Write-Host "updating build number to $buildNumberclear"
            $replacedVersion=$content -replace "(\d+).(\d+).(\d+).(\*)","$majorVersion.$minorVersion.$buildNumer.*"
            Add-Content $assemblyFile $replacedVersion
          } else {
            Add-Content $assemblyFile $content
          }
        }
        Add-Content $assemblyFile "' Build revision on $currentDate by $currentUser"
    }



    # Run the function
    ChangeAssemblyInfo