Does System.Xml use MSXML?

Question

I'm developing a C# application that uses a handful of XML files and some classes in System.Xml. A coworker insists on adding the MSXML6 redistributable to our install, along with the .NET framework but I don't think the .NET framework uses or needs MSXML in anyway. I am well aware that using MSXML from .NET is not supported but I suppose its theoretically possible for System.Xml itself to wrap MSXML at a low level. I haven't found anything definitive that .NET has its own implementation but neither can I find anything to suggest it needs MSXML.

Help me settle the debate. Does System.Xml use MSXML?

Jamie Kitson · Accepted Answer · 2022-03-23 09:30:33Z

14

System.Xml doesn't use MSXML6. They are seperate xml processing engines. See post here: MSXML 6.0 vs. System.Xml: Schema handling differences

edited Mar 23, 2022 at 9:30

Jamie Kitson

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answered Aug 15, 2008 at 18:47

Nate Smith

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Vincent · Accepted Answer · 2008-08-16 15:11:25Z

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System.Xml is in the core framework and not dependent on MSXML 6.0, but it shares a few common API (DOM parser, SAX parser, XPath node selection).

edited Aug 16, 2008 at 15:11

answered Aug 16, 2008 at 2:39

Vincent

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Will Dean · Accepted Answer · 2008-08-15 18:57:43Z

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There is no need for this sort of stuff to be the subject of tedious workplace debates, because the source code for the framework is available, and with a minuscule amount of work you can download the whole lot onto your machine. http://www.codeplex.com/NetMassDownloader

With another tiny bit of work, you can make a VS project which contains all the framework source, which makes it even easier to look through.

answered Aug 15, 2008 at 18:57

Will Dean

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Samuel Zhang · Accepted Answer · 2010-04-07 12:45:59Z

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.Net framework uses MSXML6 for installation on WinXP SP2 and W2K3 SP2 only where MSXML6 is not in the box. System.Xml is a different product to MSXML6 though some APIs share similar signature.

answered Apr 7, 2010 at 12:45

Samuel Zhang

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Comments

Keith · Accepted Answer · 2008-08-15 18:51:10Z

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I think it's needed for some MsSql-XML functionality, but System.Xml is in the core framework.

You should test your installer on a fresh machine anyway, just to be sure.

answered Aug 15, 2008 at 18:51

Keith

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