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The definitive way to use PowerShell from an msbuild script
<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<!-- #1 Place this line at the top of any msbuild script (ie, csproj, etc) -->
<PropertyGroup><PowerShell># 2>nul || type %~df0|find /v "setlocal"|find /v "errorlevel"|powershell.exe -noninteractive -&amp; exit %errorlevel% || #</PowerShell></PropertyGroup>
<!-- #2 in any target you want to run a script -->
<Target Name="default" >
<PropertyGroup> <!-- #3 prefix your powershell script with the $(PowerShell) variable, then code as normal! -->
<myscript>$(PowerShell)
#
# powershell script can do whatever you need.
#
dir ".\*.cs" -recurse |% {
write-host Examining file named: $_.FullName
# do other stuff here...
}
$answer = 2+5
write-host Answer is $answer !
</myscript>
</PropertyGroup>
<!-- #4 and execute the script like this -->
<Exec Command="$(myscript)" EchoOff="true" />
<!--
Notes:
======
- You can still use the standard Exec Task features! (see: https://msdn.microsoft.com/en-us/library/x8zx72cd.aspx)
- if your powershell script needs to use < > or & characters, just place the contents in a CDATA wrapper:
<script2><![CDATA[ $(PowerShell)
# your powershell code goes here!
write-host "<<Hi mom!>>"
]]></script2>
- if you want return items to the msbuild script you can get them:
<script3>$(PowerShell)
# your powershell code goes here!
(dir "*.cs" -recurse).FullName
</script3>
<Exec Command="$(script3)" EchoOff="true" ConsoleToMSBuild="true">
<Output TaskParameter="ConsoleOutput" PropertyName="items" />
</Exec>
<Touch Files="$(items)" /> <- see! then you can use those items with another msbuild Task
-->
</Target>
</Project>
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