.NET XML serialization gotchas? [closed]

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Another huge gotcha: when outputting XML through a web page (ASP.NET), you don’t want to include the Unicode Byte-Order Mark. Of course, the ways to use or not use the BOM are almost the same:

BAD (includes BOM):

XmlTextWriter wr = new XmlTextWriter(stream, new System.Text.Encoding.UTF8);

GOOD:

XmlTextWriter  wr = new XmlTextWriter(stream, new System.Text.UTF8Encoding(false))

You can explicitly pass false to indicate you don’t want the BOM. Notice the clear, obvious difference between Encoding.UTF8 and UTF8Encoding.

The three extra BOM Bytes at the beginning are (0xEFBBBF) or (239 187 191).

Reference: http://chrislaco.com/blog/troubleshooting-common-problems-with-the-xmlserializer/

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