changes version number in c# project files and SharedAssemblyInfo

ChangeSoftwareVersion.ps1

<#
    .SYNOPSIS
      Update Software Version.
    .DESCRIPTION
      Finds SharedAssemblyInfo.cs in the solution and installer script in deployment directory.
      Replaces code parts that define the software version in those files.
    .EXAMPLE
      "ChangeSoftwareVersion.ps1 -LocalPath . -Version 0.99.99"
    .PARAMETER LocalPath
      The path to the branch, with the installer script and SharedAssemblyInfo, which contain the software version.
    .PARAMETER Version
      The demanded software version. (Format: ^\d{1,3}\.\d{1,3}\.\d{1,3}\Z)
#>

Param(
    [Parameter(Mandatory=$true, Position=0)][string] $LocalPath,
    [Parameter(Mandatory=$true, Position=1)][string] $Version
)


# PARAMETER VALIDATION
if(!(test-path $LocalPath))
{
    $localPathNotFoundEx = [System.Management.Automation.ItemNotFoundException] "The local path '${LocalPath}' is not found. Did you sync VCS to your local disk?";
    Throw $localPathNotFoundEx;
    exit 1;
}

$ValidVersionFormat = '^\d{1,3}\.\d{1,3}\.\d{1,3}\Z';
if(!($Version -match $ValidVersionFormat))
{
    $versionFormatInvalidEx = New-Object System.FormatException "The demanded version does not match the required format: [d*.d*.d*]"
    Throw $versionFormatInvalidEx;
    exit 1;
}

# FILES WITH VERSION NUMBERS
$SharedAssemblyInfo = Get-ChildItem -Path $LocalPath -Filter "SharedAssemblyInfo.cs" -Recurse -Force;
$InstallerScript = Get-ChildItem -Path $LocalPath -Filter "Installer.iss" -Recurse -Force;

# REGEX FOR THOSE FILES
$SharedAssemblyRegex = 'Version\(\"\d{1,3}\.\d{1,3}\.\d{1,3}\"\)';
$InstallerScriptRegex = '[[:blank:]]*#define MyAppVersion \"\d{1,3}\.\d{1,3}\.\d{1,3}\"';

# EXECUTE VERSION CHANGE 1
Write-Output "========================"; 
$NewVersionString_SharedAssemblyInfo = "Version(`"$Version`")";
Write-Output "`$SharedAssemblyInfo.Fullname: $($SharedAssemblyInfo.Fullname)"; 
Write-Output "`$NewVersionString_SharedAssemblyInfo: $($NewVersionString_SharedAssemblyInfo)";

$Content = [System.IO.File]::ReadAllText($SharedAssemblyInfo.Fullname)
$NewContent = $Content -replace $SharedAssemblyRegex, $NewVersionString_SharedAssemblyInfo

$MatchingString = $Content | Select-String $SharedAssemblyRegex -AllMatches;
$MatchingString | ForEach-Object {$_.Matches} | ForEach-Object {$_.Value} {
    "Replaced in: $($SharedAssemblyInfo.Fullname)" | Write-Host;
    "old line: $($_)" | Write-Host;
    "new line: $($NewVersionString_SharedAssemblyInfo)" | Write-Host;
}

[System.IO.File]::WriteAllText($SharedAssemblyInfo.Fullname, $NewContent)
# $NewContent | Write-Host;


# EXECUTE VERSION CHANGE 2
Write-Output "========================"; 
$NewVersionString_InstallerScript = "  #define MyAppVersion `"$Version`""
Write-Output "`$InstallerScript.Fullname: $($InstallerScript.Fullname)"; 
Write-Output "`$NewVersionString_InstallerScript: $($NewVersionString_InstallerScript)";

$Content = [System.IO.File]::ReadAllText($InstallerScript.Fullname)
$NewContent = $Content -replace $InstallerScriptRegex, $NewVersionString_InstallerScript

$MatchingString = $Content | Select-String $InstallerScriptRegex -AllMatches;
$MatchingString | ForEach-Object {$_.Matches} | ForEach-Object {$_.Value} {
    "Replaced in: $($InstallerScript.Fullname)" | Write-Host;
    "old line: $($_)" | Write-Host;
    "new line: $($NewVersionString_InstallerScript)" | Write-Host;
}

[System.IO.File]::WriteAllText($InstallerScript.Fullname, $NewContent)
# $NewContent | Write-Host;