Which characters are allowed in XML?

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Which characters are allowed in XML?

Unicode code points in the following ranges are valid in XML 1.0 documents: U+0009, U+000A, U+000D: these are the only C0 controls accepted in XML 1.0; U+0020–U+D7FF, U+E000–U+FFFD: this excludes some (not all) non-characters in the BMP (all surrogates, U+FFFE and U+FFFF are forbidden);

Is comma allowed in XML?

No, the comma is not a special character for XML.

Where can I find invalid XML characters?

If you’re unable to identify this character visually, then you can use a text editor such as TextPad to view your source file. Within the application, use the Find function and select “hex” and search for the character mentioned. Removing these characters from your source file resolve the invalid XML character issue.

Are there any characters that are not allowed in XML?

Introduction. Following characters are prohibited in XML: & lt; & amp; & gt; & apos; & quot; Certain characters cause problems when used as element content or inside attribute values. Specifically, the less-than character cannot appear either as a child of an element or inside an attribute value because it is interpreted as the start of an element.

Is the less than symbol < illegal in XML?

Certain other characters are commonly referred to as being illegal XML characters and this has led to some misunderstanding. The less than symbol < is allowed only as part of the markup for XML tags.

How to remove illegal characters from an XML document?

A Google search for “remove illegal XML characters” results in plenty of code snippets. While most that I looked at appear to work, they all pass an XML string to a function that checks if the string contains an illegal XML character.

Is the ampersand symbol illegal in an XML document?

The ampersand symbol & is allowed only when used to escape an XML entity (either one of the five pre-defined XML entities or an entity that has been declared in Document Type Definition (DTD). Since there are accepted uses for these two characters, they are not strictly speaking illegal XML characters.