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advanced patterns When Using XmlDocument to Modify XML Node Attributes in C#

👀 Views: 1 đŸ’Ŧ Answers: 1 📅 Created: 2025-06-11
xml c# xmldocument C#

I tried several approaches but none seem to work. I'm working with an scenario while trying to modify XML node attributes using the `XmlDocument` class in C#... Specifically, I'm attempting to update an attribute's value within a deeply nested XML structure, but the changes don't seem to continue when I save the document. Here's the relevant piece of code: ```csharp XmlDocument xmlDoc = new XmlDocument(); xmlDoc.Load("path/to/your/file.xml"); XmlNode node = xmlDoc.SelectSingleNode("/root/element/subElement"); if (node != null) { XmlAttribute attr = node.Attributes["exampleAttribute"]; if (attr != null) { attr.Value = "newValue"; } } xmlDoc.Save("path/to/your/file.xml"); ``` When I run the code, I check the XML file afterward, but the attribute's value remains unchanged. I also tried calling `xmlDoc.RemoveAll()` before saving, thinking it might help, but that led to an empty XML file. The XML file initially looks something like this: ```xml <root> <element> <subElement exampleAttribute="oldValue" /> </element> </root> ``` I am using .NET 5, and I suspect it might have to do with how I am loading or saving the XML. I would appreciate any guidance on whether I am missing a step or if there are specific nuances when modifying attributes in an `XmlDocument`. Thank you! Has anyone else encountered this? For context: I'm using C# on macOS.