Calling a Web Service from PowerShell

Before starting this you need to setup PS environment to enable the Visual Studio 2005 tools.  Copy the following into a file called something like vs80vars.ps1:

 

$env:VSINSTALLDIR="$env:ProgramFiles\Microsoft Visual Studio 8"
$env:VCINSTALLDIR="$env:ProgramFiles\Microsoft Visual Studio 8\VC"
$env:DevEnvDir="$env:VSINSTALLDIR\Common7\IDE"
$env:FrameworkSDKDir="$env:VSINSTALLDIR\SDK\v2.0"

$FrameworkPath=$([System.Runtime.InteropServices.RuntimeEnvironment]::GetRuntimeDirectory())
$env:FrameworkDir=$(split-path $FrameworkPath -Parent)
$env:FrameworkVersion=$(split-path $FrameworkPath -Leaf)

$env:PATH="$env:VSINSTALLDIR\Common7\IDE;$env:VCINSTALLDIR\BIN;$env:VSINSTALLDIR\Common7\Tools;$env:VSINSTALLDIR\Common7\Tools\bin;$env:VCINSTALLDIR\PlatformSDK\bin;$env:FrameworkSDKDir\bin;$env:FrameworkDir\$env:FrameworkVersion;$env:VCINSTALLDIR\VCPackages;$env:PATH"
$env:INCLUDE="$env:VCINSTALLDIR\ATLMFC\INCLUDE;$env:VCINSTALLDIR\INCLUDE;$env:VCINSTALLDIR\PlatformSDK\include;$env:FrameworkSDKDir\include;$env:INCLUDE"
$env:LIB="$env:VCINSTALLDIR\ATLMFC\LIB;$env:VCINSTALLDIR\LIB;$env:VCINSTALLDIR\PlatformSDK\lib;$env:FrameworkSDKDir\lib;$env:LIB"
$env:LIBPATH="$FrameworkPath;$env:VCINSTALLDIR\ATLMFC\LIB"

 

Then "dot" the attached PS1 script into your shell like so"

 

PoSH 1> . .\vs80vars.ps1

 

Now here’s how to acces one particular web service.  Note that the first two lines below create a proxy assembly which takes care of the communication to the web service.  On line 3 and 4 we load the assembly and then create the WeatherForecast proxy object.  Then on line 5 we call one of its methods.  It returns an XML document which we store in $forecast.  BTW, you can use Reflector or Visual Studio’s Object Browser to see the other methods in the assembly (or you can open the WeatherForecast.cs file to see the nitty gritty proxy details).

 

PoSH 1> wsdl.exe http://www.webservicex.net/WeatherForecast.asmx?WSDL

PoSH 2> csc /t:library WeatherForecast.cs

PoSH 3> [Reflection.Assembly]::LoadFrom("$pwd\WeatherForecast.dll")

PoSH 4> $weatherService = new-object WeatherForecast

PoSH 5> $forecast = $weatherService.GetWeatherByZipCode(80526)

PoSH 6> $forecast

Latitude         : 40.54729
Longitude        : 105.1076
AllocationFactor : 0.008857
FipsCode         : 08
PlaceName        : FORT COLLINS
StateCode        : CO
Status           :
Details          : {WeatherData, WeatherData, WeatherData, WeatherData…}

 

PoSH> $forecast.Details |select Day, MaxT*F, MinT*F

Day                        MaxTemperatureF            MinTemperatureF
—                        —————            —————
Thursday, June 15, 2006    84                         54
Friday, June 16, 2006      80                         50
Saturday, June 17, 2006    85                         55
Sunday, June 18, 2006      91                         58
Monday, June 19, 2006      95                         59
Tuesday, June 20, 2006     94                         58
Wednesday, June 21, 2006   90                         56

 

See it gets a bit warmer here in Colorado than some folks would suspect. 

 

Updated 12/27/2006: If you are behind a corporate firewall you might need to run WSDL.exe with additional options:

 

wsdl.exe http://www.webservicex.net/WeatherForecast.asmx? /proxy=myproxyserver:8080 

    /proxyusername=myusername /proxypassword=mypassword /proxydomain=USA

Thanks to sundanceca for figuring the proxy options to do this.

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