Doxygen supports most of the XML commands that are typically used in C# code comments. The XML tags are defined in Appendix E of the ECMA-334 standard, which defines the C# language. Unfortunately, the specification is not very precise and a number of the examples given are of poor quality.
Here is the list of tags supported by doxygen:
<c>Identifies inline text that should be rendered as a piece of code. Similar to using
<code>Set one or more lines of source code or program output. Note that this command behaves like \code ... \endcode for C# code, but it behaves like the HTML equivalent
<code>...</code>for other languages.
<description>Part of a
<list>command, describes an item.
<example>Marks a block of text as an example, ignored by doxygen.
<exception cref="member">Identifies the exception a method can throw.
<include>Can be used to import a piece of XML from an external file. Ignored by doxygen at the moment.
<inheritdoc>Can be used to insert the documentation of a member of a base class into the documentation of a member of a derived class that reimplements it.
<item>List item. Can only be used inside a
<list type="type">Starts a list, supported types are
table. A list consists of a number of
<item>tags. A list of type table, is a two column table which can have a header.
<listheader>Starts the header of a list of type "table".
<para>Identifies a paragraph of text.
<param name="paramName">Marks a piece of text as the documentation for parameter "paramName". Similar to using \param.
<paramref name="paramName">Refers to a parameter with name "paramName". Similar to using \a.
<permission>Identifies the security accessibility of a member. Ignored by doxygen.
<remarks>Identifies the detailed description.
<returns>Marks a piece of text as the return value of a function or method. Similar to using \return.
<see cref="member">Refers to a member. Similar to \ref.
<seealso cref="member">Starts a "See also" section referring to "member". Similar to using \sa member.
<summary>Identifies the brief description. Similar to using \brief.
<term>Part of a
<typeparam name="paramName">Marks a piece of text as the documentation for type parameter "paramName". Similar to using \param.
<typeparamref name="paramName">Refers to a parameter with name "paramName". Similar to using \a.
<value>Identifies a property. Ignored by doxygen.
Here is an example of a typical piece of code using some of the above commands: