Welcome!

Release Management Authors: Pat Romanski, Elizabeth White, David H Deans, Liz McMillan, Jnan Dash

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 an independent consultant specializing in Cloud technologies such as Azure and Office 365. He also specializes in mobile development. Corey serves as the product manager for two cloud-first mobile app platforms: BrewZap and HappenZap.

@ThingsExpo Stories
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...
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 ...
In his keynote at 18th Cloud Expo, Andrew Keys, Co-Founder of ConsenSys Enterprise, provided an overview of the evolution of the Internet and the Database and the future of their combination – the Blockchain. Andrew Keys is Co-Founder of ConsenSys Enterprise. He comes to ConsenSys Enterprise with capital markets, technology and entrepreneurial experience. Previously, he worked for UBS investment bank in equities analysis. Later, he was responsible for the creation and distribution of life settle...
Imagine if you will, a retail floor so densely packed with sensors that they can pick up the movements of insects scurrying across a store aisle. Or a component of a piece of factory equipment so well-instrumented that its digital twin provides resolution down to the micrometer.
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...
Product connectivity goes hand and hand these days with increased use of personal data. New IoT devices are becoming more personalized than ever before. In his session at 22nd Cloud Expo | DXWorld Expo, Nicolas Fierro, CEO of MIMIR Blockchain Solutions, will discuss how in order to protect your data and privacy, IoT applications need to embrace Blockchain technology for a new level of product security never before seen - or needed.
When shopping for a new data processing platform for IoT solutions, many development teams want to be able to test-drive options before making a choice. Yet when evaluating an IoT solution, it’s simply not feasible to do so at scale with physical devices. Building a sensor simulator is the next best choice; however, generating a realistic simulation at very high TPS with ease of configurability is a formidable challenge. When dealing with multiple application or transport protocols, you would be...
We are given a desktop platform with Java 8 or Java 9 installed and seek to find a way to deploy high-performance Java applications that use Java 3D and/or Jogl without having to run an installer. We are subject to the constraint that the applications be signed and deployed so that they can be run in a trusted environment (i.e., outside of the sandbox). Further, we seek to do this in a way that does not depend on bundling a JRE with our applications, as this makes downloads and installations rat...
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.
DX World EXPO, LLC, a Lighthouse Point, Florida-based startup trade show producer and the creator of "DXWorldEXPO® - Digital Transformation Conference & Expo" has announced its executive management team. The team is headed by Levent Selamoglu, who has been named CEO. "Now is the time for a truly global DX event, to bring together the leading minds from the technology world in a conversation about Digital Transformation," he said in making the announcement.
In this strange new world where more and more power is drawn from business technology, companies are effectively straddling two paths on the road to innovation and transformation into digital enterprises. The first path is the heritage trail – with “legacy” technology forming the background. Here, extant technologies are transformed by core IT teams to provide more API-driven approaches. Legacy systems can restrict companies that are transitioning into digital enterprises. To truly become a lead...
Digital Transformation (DX) is not a "one-size-fits all" strategy. Each organization needs to develop its own unique, long-term DX plan. It must do so by realizing that we now live in a data-driven age, and that technologies such as Cloud Computing, Big Data, the IoT, Cognitive Computing, and Blockchain are only tools. In her general session at 21st Cloud Expo, Rebecca Wanta explained how the strategy must focus on DX and include a commitment from top management to create great IT jobs, monitor ...
"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...
The IoT Will Grow: In what might be the most obvious prediction of the decade, the IoT will continue to expand next year, with more and more devices coming online every single day. What isn’t so obvious about this prediction: where that growth will occur. The retail, healthcare, and industrial/supply chain industries will likely see the greatest growth. Forrester Research has predicted the IoT will become “the backbone” of customer value as it continues to grow. It is no surprise that retail is ...
"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.
SYS-CON Events announced today that Conference Guru has been named “Media Sponsor” of the 22nd International Cloud Expo, which will take place on June 5-7, 2018, at the Javits Center in New York, NY. A valuable conference experience generates new contacts, sales leads, potential strategic partners and potential investors; helps gather competitive intelligence and even provides inspiration for new products and services. Conference Guru works with conference organizers to pass great deals to gre...
The Internet of Things will challenge the status quo of how IT and development organizations operate. Or will it? Certainly the fog layer of IoT requires special insights about data ontology, security and transactional integrity. But the developmental challenges are the same: People, Process and Platform. In his session at @ThingsExpo, Craig Sproule, CEO of Metavine, demonstrated how to move beyond today's coding paradigm and shared the must-have mindsets for removing complexity from the develop...
In his Opening Keynote at 21st Cloud Expo, John Considine, General Manager of IBM Cloud Infrastructure, led attendees through the exciting evolution of the cloud. He looked at this major disruption from the perspective of technology, business models, and what this means for enterprises of all sizes. John Considine is General Manager of Cloud Infrastructure Services at IBM. In that role he is responsible for leading IBM’s public cloud infrastructure including strategy, development, and offering m...
"Evatronix provides design services to companies that need to integrate the IoT technology in their products but they don't necessarily have the expertise, knowledge and design team to do so," explained Adam Morawiec, VP of Business Development at Evatronix, in this SYS-CON.tv interview at @ThingsExpo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
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 ...