Welcome!

Microsoft Cloud Authors: Janakiram MSV, Yeshim Deniz, David H Deans, Andreas Grabner, Stackify Blog

Related Topics: Microsoft Cloud, Silverlight

Microsoft Cloud: Blog Feed Post

How to: Build a SharePoint 2010 PowerShell Cmdlet

I’m far from a PowerShell expert, so I had to figure out the difference between a PowerShell module & a PowerShell Snapin

One thing that is getting a lot of attention in SharePoint 2010 is the use of PowerShell.  It’s too cool and you really have a lot of power (no pun intended) to automate just about anything in SharePoint.  In fact Kyle Kelin (@spkyle) is speaking this weekend about it at SharePoint Saturday Houston (#spshou). The Microsoft.SharePoint.PowerShell snapin comes with over 500 commands, but you might want to create your own.  Today’s post will show you how to get started. There are a lot of great posts out there on how to build a regular PowerShell cmdlet, but I wanted to build one that focused specifically on building one for SharePoint.

Start by creating a new class library project in Visual Studio 2010.  It’s too bad there isn’t a built-in project template, because there are a number of references you must add.  Several of these references don’t show up in the references browser either, so you have to actually specify the path directly from the GAC (or get a copy of it from somewhere).  I’ll include full paths for most things to make it easier for you to add references.

  • System.Management.Automation.dll (C:\Program Files (x86)\Reference Assemblies\Microsoft\WindowsPowerShell\v1.0\System.Management.Automation.dll)
  • System.Configuration.Install.dll (C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.Configuration.Install.dll)
  • Microsoft.SharePoint.dll (C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\ISAPI\Microsoft.SharePoint.dll)
  • Microsoft.SharePoint.PowerShell.dll (C:\Windows\assembly\GAC_MSIL\Microsoft.SharePoint.PowerShell\14.0.0.0__71e9bce111e9429c\Microsoft.SharePoint.Powershell.dll)

As I mentioned, some of these you will find in the Add Reference browser, but some you will not.  System.Configuration.Install.dll is only required if you plan on making your assembly a Snapin (we’ll talk about that in a bit).  For some reason, Microsoft.SharePoint.PowerShell.dll is no where to be found in the 14 ISAPI folder, so I included the full path from the GAC.

As you may know, PowerShell commands consist of a verb followed by a noun such as Get-Command.  The full list of available verbs are listed in the SDK or you can take a look at the System.Management.Automation.VerbsCommon class.  You can choose whichever verb makes since followed by the noun of your choice (assuming it isn’t already taken).  For today’s post, we’re going to look at two different verbs: Get and Set.  The methods you override actually depend on which verb you use.  We’ll start with a simple Hello World cmdlet.  The basis of this cmdlet comes from code I first saw at Ignite.  I’m going to create a new class called SPCmdletHelloWorld.cs.

First, start by adding the necessary references.

using System.Management.Automation;

using Microsoft.SharePoint;

using Microsoft.SharePoint.PowerShell;

The class will inherit from a base class depending on the verb we are implementing.  In this case we are implementing a Get verb so it inherits from SPCmdletBase.  The class takes a generic, so that you can specify the return type.  Keep in mind you can return actual objects such as SPWeb.  It doesn’t have to be primitives.  The class declaration also takes a Cmdlet attribute (I really wish they would have called it Commandlet, but whatever).  This tells PowerShell which verb and noun you are implementing.  In our case, we are implementing Get-SPHelloWorld.  Here is what the declaration looks like.

[Cmdlet(VerbsCommon.Get, "SPHelloWorld")]

public class SPCmdletHelloWorld : SPGetCmdletBase<string>

The next step is to override a method to do our work.  The method you override depends on the particular base class you are overriding from.  In this case, we want to override from RetrieveDataObjects which returns an IEnumerable which I assume has to be the same type as we defined on the class.  In this case we are returning some strings.

protected override IEnumerable<string> RetrieveDataObjects()

{

return new string[] { "Hello World from DotNetMafia.com!", "This is my first commandlet!" };

}

The whole class together looks like this.

using System;

using System.ComponentModel;

using System.Collections.Generic;

using System.Management.Automation;

using Microsoft.SharePoint;

using Microsoft.SharePoint.PowerShell;

 

namespace DotNetMafia.SharePoint.PowerShell

{

[Cmdlet(VerbsCommon.Get, "SPHelloWorld")]

public class SPCmdletHelloWorld : SPGetCmdletBase<string>

{

protected override IEnumerable<string> RetrieveDataObjects()

{

return new string[] { "Hello World from DotNetMafia.com!", "This is my first cmdlet!" };

}

}

}

At this point, we should be able to compile our cmdlet, import it, and be able to execute it.  We don’t have a snapin, but we can still register the code to be executed from PowerShell by using Import-Module.  Specify the full path to the assembly to load it.

Import-Module C:\Code\PowerShell\DemoCmdlet\bin\debug\DotNetMafia.PowerShell.DemoCmdlet.dll

With the module loaded we can execute it using the Get verb.

Get-SPHelloWorld

This will give us results that look like this.

PowerShellCmdletHelloWorld

Now, I’m far from a PowerShell expert, so I had to do some research to figure out what the difference between a PowerShell module and a PowerShell Snapin is.  Both allow you to execute code, but how it is executed varies greatly.  From what I gather though, Snapins are the original way of executing code and in PowerShell 2, modules will be the new way going forward.  This post gives more information on it if you are curious.  There are a few extra steps involved to create a Snapin, but it’s worth seeing, so I’m going to cover them quickly.  I do know that Snapins require admin privileges since you have to put them in the GAC.

First, we need to create a class and inherit from System.Management.Automation.PSSnapin.  I don’t believe it matters what this class is named.  It simply appears to handle the installer logic when you later install the Snappin with GacUtil / InstallUtil (much like a windows service).  In the class we simply override a couple common properties to provide more information about the Snapin.  Here’s what mine looks like.

using System;

using System.ComponentModel;

using System.Management.Automation;

using Microsoft.SharePoint;

using Microsoft.SharePoint.PowerShell;

 

namespace DotNetMafia.PowerShell.DemoCmdlet

{

[RunInstaller(true)]

public class DemoPowerShellSnapIn : PSSnapIn

{

public override string Name

{

get { return "DotNetMafia.PowerShell.DemoCmdlet"; }

}

 

public override string Vendor

{

get { return "DotNetMafia.com";  }

}

 

public override string Description

{

get { return "DotNetMafia PowerShell Demo Cmdlet"; }

}

}

}

Another file that we may (or may not) have to create is the .psc1 file.  This has the same file prefix as your assembly.  I’m not 100% sure you have to create this (but I have seen it in other sample code), so I’ll show you it just in case.  I do know that you can auto-generate this file using a PowerShell command.

<PSConsoleFile ConsoleSchemaVersion="1.0">

<PSVersion>1.0</PSVersion>

<PSSnapIns>

<PSSnapIn Name="DotNetMafia.PowerShell.DemoCmdlet" />

</PSSnapIns>

</PSConsoleFile>

The last thing I do is mainly for convenience.  I create a batch file to install my Snapin every time I compile.

@SET GACUTIL="C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\bin\gacutil.exe"

@SET INSTALLUTIL="C:\WINDOWS\Microsoft.NET\Framework64\v2.0.50727\InstallUtil.exe"

 

%GACUTIL% -if DotNetMafia.PowerShell.DemoCmdlet.dll

%INSTALLUTIL% DotNetMafia.PowerShell.DemoCmdlet.dll

When you compile, you should now see the installer run which looks something like this.

Running a transacted installation.

Beginning the Install phase of the installation.

See the contents of the log file for the C:\Code\PowerShell\DemoCommandlet \bin\Debug\DotNetMafia.PowerShell.DemoCmdlet.dll assembly's progress.

The file is located at C:\Code\PowerShell\DemoCommandlet\bin\Debug\DotNetMafia. PowerShell.DemoCmdlet.InstallLog.

Installing assembly 'C:\Code\PowerShell\DemoCommandlet\bin\Debug\DotNetMafia. PowerShell.DemoCmdlet.dll'.

Affected parameters are:
assemblypath = C:\Code\PowerShell\DemoCommandlet\bin\Debug\DotNetMafia. PowerShell.DemoCmdlet.dll
logfile = C:\Code\PowerShell\DemoCommandlet\bin\Debug\DotNetMafia.PowerShell. DemoCmdlet.InstallLog
logtoconsole =

The Install phase completed successfully, and the Commit phase is beginning.
See the contents of the log file for the C:\Code\PowerShell\DemoCommandlet\bin\ Debug\DotNetMafia.PowerShell.DemoCmdlet.dll assembly's progress.

The file is located at C:\Code\PowerShell\DemoCommandlet\bin\Debug\DotNetMafia. PowerShell.DemoCmdlet.InstallLog.
Committing assembly 'C:\Code\PowerShell\DemoCommandlet\bin\Debug\DotNetMafia. PowerShell.DemoCmdlet.dll'.

Affected parameters are:
assemblypath = C:\Code\PowerShell\DemoCommandlet\bin\Debug\DotNetMafia. PowerShell.DemoCmdlet.dll
logfile = C:\Code\PowerShell\DemoCommandlet\bin\Debug\DotNetMafia.PowerShell. DemoCmdlet.InstallLog
logtoconsole =

The Commit phase completed successfully.

The transacted install has completed.
========== Build: 1 succeeded or up-to-date, 0 failed, 0 skipped ==========

If you remember from my first PowerShell post, we register a Snapin with the Add-PSSnapin command.  We can then use Get-Command to inspect which commands are available in the Snappin.  Executing the comamnds is just the same as with the module.  Here is what it looks like.

PowerShellSnapin

You might notice I have two commands listed there.  You can include multiple commands inside one assembly.  Let’s take a look at the second command.  This command actually makes changes inside SharePoint.  It’s a simple command that takes a string and a URL and changes the site title.  This time, we inherit from SPSetCmdletBase<>.  We can treat public fields in our class as command line parameters by using the Parameter attribute.  The position sets the order of the parameters and then you can specify whether they are required or not as well as other options.

[Parameter(Position=0, Mandatory=true)]

public string title;

 

[Parameter(Position=1, Mandatory=true)]

public string url;

Instead of overriding RetrieveDataObjects, we override UpdateDataObject instead.  Then I just use the URL parameter to get an SPWeb object and then update the title. Here’s what the entire class looks like.

using System;

using System.ComponentModel;

using System.Collections.Generic;

using System.Management.Automation;

using Microsoft.SharePoint;

using Microsoft.SharePoint.Administration;

using Microsoft.SharePoint.PowerShell;

 

namespace DotNetMafia.PowerShell.DemoCmdlet

{

[Cmdlet(VerbsCommon.Set, "SPTitle"), SPCmdlet(RequireUserFarmAdmin = true)]

public class SPCmdletSetTitle : SPSetCmdletBase<SPWeb>

{

[Parameter(Position=0, Mandatory=true)]

public string title;

 

[Parameter(Position=1, Mandatory=true)]

public string url;

 

protected override void UpdateDataObject()

{

using (SPSite siteCollection = new SPSite(url))

{

using (SPWeb site = siteCollection.OpenWeb())

{

site.Title = title;

site.Update();

}

}

}

}

}

It looks like this when we execute it.  I’m prompted for parameters since they are mandatory.

PowerShellCmdletSPTitle

When we look at the site now, we can see the changed title.

PowerShellSiteTitleChanged

Hopefully, this is enough to get you started with PowerShell cmdlets.  There is so much more you can do here than what I have mentioned, but this will get you started with two command verbs: Get and Set.  I’ve also attached the code that I have shown to this post.  Enjoy.

Read the original blog entry...

More Stories By Corey Roth

Corey Roth, a SharePoint Server MVP, is a consultant at Hitachi Consulting specializing in SharePoint and Office 365 for clients in the energy sector. He has more than ten years of experience delivering solutions in the energy, travel, advertising and consumer electronics verticals.

Corey specializes in delivering ECM and search solutions to clients using SharePoint. Corey has always focused on rapid adoption of new Microsoft technologies including Visual Studio 2013, Office 365, and SharePoint.

He is a member of the .NET Mafia (www.dotnetmafia.com) where he blogs about the latest technology and SharePoint. He is dedicated to the community and speaks regularly at user groups and SharePoint Saturdays.

@ThingsExpo Stories
Widespread fragmentation is stalling the growth of the IIoT and making it difficult for partners to work together. The number of software platforms, apps, hardware and connectivity standards is creating paralysis among businesses that are afraid of being locked into a solution. EdgeX Foundry is unifying the community around a common IoT edge framework and an ecosystem of interoperable components.
"MobiDev is a software development company and we do complex, custom software development for everybody from entrepreneurs to large enterprises," explained Alan Winters, U.S. Head of Business Development at MobiDev, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
In his session at 21st Cloud Expo, Carl J. Levine, Senior Technical Evangelist for NS1, will objectively discuss how DNS is used to solve Digital Transformation challenges in large SaaS applications, CDNs, AdTech platforms, and other demanding use cases. Carl J. Levine is the Senior Technical Evangelist for NS1. A veteran of the Internet Infrastructure space, he has over a decade of experience with startups, networking protocols and Internet infrastructure, combined with the unique ability to it...
"Space Monkey by Vivent Smart Home is a product that is a distributed cloud-based edge storage network. Vivent Smart Home, our parent company, is a smart home provider that places a lot of hard drives across homes in North America," explained JT Olds, Director of Engineering, and Brandon Crowfeather, Product Manager, at Vivint Smart Home, in this SYS-CON.tv interview at @ThingsExpo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
"IBM is really all in on blockchain. We take a look at sort of the history of blockchain ledger technologies. It started out with bitcoin, Ethereum, and IBM evaluated these particular blockchain technologies and found they were anonymous and permissionless and that many companies were looking for permissioned blockchain," stated René Bostic, Technical VP of the IBM Cloud Unit in North America, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Conventi...
"Akvelon is a software development company and we also provide consultancy services to folks who are looking to scale or accelerate their engineering roadmaps," explained Jeremiah Mothersell, Marketing Manager at Akvelon, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
Coca-Cola’s Google powered digital signage system lays the groundwork for a more valuable connection between Coke and its customers. Digital signs pair software with high-resolution displays so that a message can be changed instantly based on what the operator wants to communicate or sell. In their Day 3 Keynote at 21st Cloud Expo, Greg Chambers, Global Group Director, Digital Innovation, Coca-Cola, and Vidya Nagarajan, a Senior Product Manager at Google, discussed how from store operations and ...
Large industrial manufacturing organizations are adopting the agile principles of cloud software companies. The industrial manufacturing development process has not scaled over time. Now that design CAD teams are geographically distributed, centralizing their work is key. With large multi-gigabyte projects, outdated tools have stifled industrial team agility, time-to-market milestones, and impacted P&L stakeholders.
Gemini is Yahoo’s native and search advertising platform. To ensure the quality of a complex distributed system that spans multiple products and components and across various desktop websites and mobile app and web experiences – both Yahoo owned and operated and third-party syndication (supply), with complex interaction with more than a billion users and numerous advertisers globally (demand) – it becomes imperative to automate a set of end-to-end tests 24x7 to detect bugs and regression. In th...
"Cloud Academy is an enterprise training platform for the cloud, specifically public clouds. We offer guided learning experiences on AWS, Azure, Google Cloud and all the surrounding methodologies and technologies that you need to know and your teams need to know in order to leverage the full benefits of the cloud," explained Alex Brower, VP of Marketing at Cloud Academy, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clar...
"There's plenty of bandwidth out there but it's never in the right place. So what Cedexis does is uses data to work out the best pathways to get data from the origin to the person who wants to get it," explained Simon Jones, Evangelist and Head of Marketing at Cedexis, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
SYS-CON Events announced today that CrowdReviews.com has been named “Media Sponsor” of SYS-CON's 22nd International Cloud Expo, which will take place on June 5–7, 2018, at the Javits Center in New York City, NY. CrowdReviews.com is a transparent online platform for determining which products and services are the best based on the opinion of the crowd. The crowd consists of Internet users that have experienced products and services first-hand and have an interest in letting other potential buye...
SYS-CON Events announced today that Telecom Reseller has been named “Media Sponsor” of SYS-CON's 22nd International Cloud Expo, which will take place on June 5-7, 2018, at the Javits Center in New York, NY. Telecom Reseller reports on Unified Communications, UCaaS, BPaaS for enterprise and SMBs. They report extensively on both customer premises based solutions such as IP-PBX as well as cloud based and hosted platforms.
It is of utmost importance for the future success of WebRTC to ensure that interoperability is operational between web browsers and any WebRTC-compliant client. To be guaranteed as operational and effective, interoperability must be tested extensively by establishing WebRTC data and media connections between different web browsers running on different devices and operating systems. In his session at WebRTC Summit at @ThingsExpo, Dr. Alex Gouaillard, CEO and Founder of CoSMo Software, presented ...
WebRTC is great technology to build your own communication tools. It will be even more exciting experience it with advanced devices, such as a 360 Camera, 360 microphone, and a depth sensor camera. In his session at @ThingsExpo, Masashi Ganeko, a manager at INFOCOM Corporation, introduced two experimental projects from his team and what they learned from them. "Shotoku Tamago" uses the robot audition software HARK to track speakers in 360 video of a remote party. "Virtual Teleport" uses a multip...
A strange thing is happening along the way to the Internet of Things, namely far too many devices to work with and manage. It has become clear that we'll need much higher efficiency user experiences that can allow us to more easily and scalably work with the thousands of devices that will soon be in each of our lives. Enter the conversational interface revolution, combining bots we can literally talk with, gesture to, and even direct with our thoughts, with embedded artificial intelligence, whic...
SYS-CON Events announced today that Evatronix will exhibit at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Evatronix SA offers comprehensive solutions in the design and implementation of electronic systems, in CAD / CAM deployment, and also is a designer and manufacturer of advanced 3D scanners for professional applications.
Leading companies, from the Global Fortune 500 to the smallest companies, are adopting hybrid cloud as the path to business advantage. Hybrid cloud depends on cloud services and on-premises infrastructure working in unison. Successful implementations require new levels of data mobility, enabled by an automated and seamless flow across on-premises and cloud resources. In his general session at 21st Cloud Expo, Greg Tevis, an IBM Storage Software Technical Strategist and Customer Solution Architec...
To get the most out of their data, successful companies are not focusing on queries and data lakes, they are actively integrating analytics into their operations with a data-first application development approach. Real-time adjustments to improve revenues, reduce costs, or mitigate risk rely on applications that minimize latency on a variety of data sources. In his session at @BigDataExpo, Jack Norris, Senior Vice President, Data and Applications at MapR Technologies, reviewed best practices to ...
An increasing number of companies are creating products that combine data with analytical capabilities. Running interactive queries on Big Data requires complex architectures to store and query data effectively, typically involving data streams, an choosing efficient file format/database and multiple independent systems that are tied together through custom-engineered pipelines. In his session at @BigDataExpo at @ThingsExpo, Tomer Levi, a senior software engineer at Intel’s Advanced Analytics gr...