IContentHandler.StartPrefixMapping(String, String) Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Begin the scope of a prefix-URI Namespace mapping.
[Android.Runtime.Register("startPrefixMapping", "(Ljava/lang/String;Ljava/lang/String;)V", "GetStartPrefixMapping_Ljava_lang_String_Ljava_lang_String_Handler:Org.Xml.Sax.IContentHandlerInvoker, Mono.Android, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null")]
public void StartPrefixMapping (string? prefix, string? uri);
[<Android.Runtime.Register("startPrefixMapping", "(Ljava/lang/String;Ljava/lang/String;)V", "GetStartPrefixMapping_Ljava_lang_String_Ljava_lang_String_Handler:Org.Xml.Sax.IContentHandlerInvoker, Mono.Android, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null")>]
abstract member StartPrefixMapping : string * string -> unit
Parameters
- prefix
- String
the Namespace prefix being declared. An empty string is used for the default element namespace, which has no prefix.
- uri
- String
the Namespace URI the prefix is mapped to
- Attributes
Exceptions
the client may throw an exception during processing
Remarks
Begin the scope of a prefix-URI Namespace mapping.
The information from this event is not necessary for normal Namespace processing: the SAX XML reader will automatically replace prefixes for element and attribute names when the http://xml.org/sax/features/namespaces
feature is <var>true</var> (the default).
There are cases, however, when applications need to use prefixes in character data or in attribute values, where they cannot safely be expanded automatically; the start/endPrefixMapping event supplies the information to the application to expand prefixes in those contexts itself, if necessary.
Note that start/endPrefixMapping events are not guaranteed to be properly nested relative to each other: all startPrefixMapping events will occur immediately before the corresponding #startElement startElement
event, and all #endPrefixMapping endPrefixMapping
events will occur immediately after the corresponding #endElement endElement
event, but their order is not otherwise guaranteed.
There should never be start/endPrefixMapping events for the "xml" prefix, since it is predeclared and immutable.
Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.
Applies to
See also
- EndPrefixMapping(String)
- <xref:Org.Xml.Sax.IContentHandler.StartElement(System.String%2c+System.String%2c+System.String%2c+System.String)>