Windows Powershell for Developers by Finke, Douglas -- Read -- Imperial Library of Trantor

Index

Windows Powershell for Developers Dedication Preface

Audience Assumptions This Book Makes Contents of This Book Conventions Used in This Book Using Code Examples

Available for Download

We’d Like to Hear from You Safari® Books Online Acknowledgments

And Now, the Small Village of Folks Who Helped, Inspired, and Supported Me

1. Introduction

This Is Just the Beginning Why Use PowerShell There’s a New Game in Town An Underutilized Development Tool

2. Getting Started

Installing PowerShell

Checking the PowerShell Version

Interactivity, the Key to PowerShell Running a PowerShell Script

Changing the Execution Policy from the Command Line

RemoteSigned is good for you Running scripts with the execution policy set to Restricted Now we’re set to run a script

PowerShell ISE Other PowerShell Editors PowerShell and Visual Studio The PowerShell Community The Future of PowerShell on Windows 8 Summary

3. The Dime Tour

The Object Pipeline: The Game Changer Automation References Semicolons Return Statements Datatypes Exception Handling

Break Continue Try/Catch/Finally

Quoting Rules PowerShell Subexpressions in Strings Here-Strings

Great Code Generation Techniques C# Code

Closures, Functions, and Lambdas

Scriptblocks, Dynamic Languages, and Design Patterns

Arrays

Creating an Empty Array Adding an Array Item Retrieving an Element from an Array Array Slicing Finding Array Elements Reversing an Array Assigning Values to Multiple Variables in an Array

Parentheses and Commas Hash Tables

Creating an Empty Hash Table Adding a Hash Table Item Initializing a Hash Table with Items Concatenating Hash Tables

Get-Member

Filtering with Get-Member Using Get-Member with Collections

Inject a GUI into the PowerShell Command Line New-Object

Launching Internet Explorer Creating a New PowerShell Object

PowerShell v3 is more pithy

Using the .NET Framework

Add-Member Add-Type

Compiling C# on the Fly Newing Up the Class Calling the Add Method on MyMathClass Wait, I Don’t Have the Source

“What Does % Do?” and Other Aliases Modules Summary

4. Accelerating Delivery

Scanning for const Definitions

Reading a Single C# File

Using Select-String

Reading C# Files in a Directory

Working with Template Engines

The Engine A Single Variable Multiple Variables Multiple Templates Complex Logic UML Style Syntax Reading XML Bonus Round

Generating PowerShell Functions from C# Methods

Get Parameters Pulling It All Together

Calling PowerShell Functions from C# Overriding C# Methods with PowerShell Functions

The Breakdown Looking for PowerShell Functions Extracting Metadata and Generating C# The PowerShell Module Testing It All

Summary

5. Add PowerShell to Your GUI

Embedding PowerShell in your C# Application Beaver Music Application

PowerShell Console Foundational Functions

New-Album Add-Album Import-Csv Get-Album and Clear-Album

Managing Applications Better with PowerShell Importing Albums from the Web

Function Get-AlbumFromWeb PowerShell v3 Out-GridView Export-ToExcel

Interacting with MEF

Discovering the executable commands Show-NewAlbumDialog

Implementing Performance Counters

Get-PrivateBytes Get-YahooMusic

Wiring a Textbox to Execute PowerShell Code Working in the PreviewKeyDown Running Script and Debugging the C#

Getting the PowerShell Console in Your App

PSConfig.Profile PSConfig.AddVariable The PowerShell Console Code

PS.cs PSConfig.cs

Summary

6. PowerShell and the Internet

Net.WebClient Wrapping Code in a PowerShell Function

Reading CSV-Formatted Data from the Web

Reading XML-Formatted Data from the Web

The Structure of XML Data US Government Data Sources

Invoke-RestMethod

Detecting XML Detecting JSON

PowerShell and The New York Times Semantic API

Reading The New York Times, part 1 Reading The New York Times, part 2

New-WebServiceProxy

Stock WebService Dig a Little Deeper

Invoke-WebRequest

PowerShell and Google

The target HTML

PowerShell and Bing PowerShell and the Twitter API

Summary

7. Building GUI Applications in PowerShell

Why a Chapter About GUIs?

Answer: Two Lines of Code

PowerShell and WinForms PowerShell, ShowUI, and the Twitter API A Twitter GUI Application

The Code

ShowUI Video Player Summary

8. DLLs, Types, Properties, Methods, and Microsoft Roslyn

Sending Text to the Clipboard Transcoding C# to PowerShell

First, the C# Intermediate PowerShell Results Converting JSON to PowerShell

Microsoft’s Roslyn

Microsoft Roslyn and PowerShell

Using PowerShell to Display Visual Studio Detail Roslyn’s Document Methods PowerShell Roslyn Class Viewer

How It Works at a High Level

Summary

9. Writing Little Languages in PowerShell

Adding a New Construct to PowerShell PowerShell: A Better XML

But Wait—There’s More

Building the New-ToDoList function Building the New-ToDoItem function Where to put this function? Invoking the script block The New-ToDoItem Body

Putting It All Together

The Little Language in Action

Is It Worth Creating Your Own Little Language?

Graphviz

Graphviz “Hello World” Hello World Visual A PowerShell DSL as a façade to GraphViz

Building Add-Edge Building New-Graph Emitting output from New-Graph

Mix and Match PowerShell and GraphViz

Kick It Up a Notch: New-Graph Is an Internal DSL Graphing the Companies from Get-Process

Summary

10. PowerShell, COM, and More

Opening a File in Excel Using Invoke-Item

Working Invoke-Item into a PowerShell Script

Calling an Excel Function

Creating an Excel COM Instance

Discovering Available Excel Functions

Calling More Excel Functions

Automating Excel from PowerShell

Making Excel Visible Creating a Workbook and Worksheets Putting the Date in a Cell in an Excel Worksheet from PowerShell Setting Up Pivot Tables in Excel Building an Excel Pivot Table in PowerShell

Discovering Other COM Applications to Automate

Automating Internet Explorer as a COM Application

Summary

11. PowerShell Version 3

PowerShell Workflows

PowerShell Script-Based Workflow Running the Workflow Running the Workflow on Other Boxes Discovering More About Your Workflow Visual Studio Workflow

Import-Module on a XAML workflow Getting performance counters in parallel Why workflows rock

Using PowerShell with Web Data: Converting to and from JSON

Converting JSON to PowerShell Objects and Back Again What If a Web/REST Service Returns JSON?

Creating an Instance of a Microsoft .NET Framework Object Get-Content –Tail ISE v3 Out-GridView and the -PassThru Parameter Scheduling Jobs Invoke-WebRequest and Invoke-RestMethod PowerShell v3 Items That Are a Must-See

Show-Command Less Typing for ForEach and Where Execute PowerShell Commands from the Web Windows PowerShell Management ODATA IIS Extensions

Summary

A. Productive PowerShell

Getting Automation Approved Saving Time with Automation Adding Aliases to Your PowerShell Profile Adding Variables and Functions to Your PowerShell Profile

The ql Function Adding Variables to $Profile Adding Custom PowerShell Functions Quick Access to Launching Visual Studio Solutions

Remote Desktop Connection Starting Another PowerShell Session

Start-Process Can Do More

Using PowerShell’s Tokenizer PowerShell and Older Tools

Subversion

Displaying SVN info on your PowerShell prompt

The script

Faster, Faster—The Light Is Turning Red

SlowTrain FastTrain ForEach-Object Versus ForEach Statement

Summary

B. Running PowerShell with the .NET 4.0 Runtime About the Author Copyright

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