Скачать или смотреть How to Add Line To XML File Using PowerShell

Learn how to effectively use PowerShell to add a line to an XML file. This step-by-step guide takes you through each process to ensure clarity and understanding, even for beginners in coding.
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This video is based on the question https://stackoverflow.com/q/65834098/ asked by the user 'Christopher Cass' ( https://stackoverflow.com/u/7948756/ ) and on the answer https://stackoverflow.com/a/65836020/ provided by the user 'zett42' ( https://stackoverflow.com/u/7571258/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Add Line To XML File Using PowerShell: A Beginner's Guide

Working with XML files can seem daunting, especially if you’re new to PowerShell. If you need to modify an XML configuration by adding specific elements, it can be a bit challenging without the right guidance. Here, we will walk you through a common scenario where you must add a line to your XML file efficiently and in a structured manner using PowerShell.

The Problem

You have an XML file structured like the example below, and your goal is to add a <timeout> line after the <prod.baseUrl> line for elements categorized as Prod.

Here’s a snippet of your XML:

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You want it to look like this after adding the timeout:

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The Solution

Step-by-Step Breakdown

The core of the solution involves using XPath to navigate through the XML structure, which is much more reliable than simply using dot notation in PowerShell.

Load the XML File: Start by loading your XML file into a variable. Use the Get-Content cmdlet with the -Raw parameter to read the whole document.

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Select Target Elements: Use XPath to select all <parameters> elements that reside under <add> tags with a type of Prod.

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Loop Through the Elements: For each found <parameters>, you will create a new <timeout> element.

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Insert the New Element: Use the InsertAfter() method to add the <timeout> element right after the existing <prod.baseUrl>.

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Save the Changes: Finally, don't forget to save your modified XML file.

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Complete PowerShell Script

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Conclusion

By following these steps, you can easily add a line to your XML file using PowerShell. This method not only ensures that you are inserting new elements accurately but also enables future modifications to be done efficiently, even thousands of times if necessary.

Make sure to test the script with a backup of your original XML file to prevent any data loss from accidental overwrites. Happy scripting!