XmlReader.ReadAttributeValue 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.
When overridden in a derived class, parses the attribute value into one or more Text
, EntityReference
, or EndEntity
nodes.
public:
abstract bool ReadAttributeValue();
public abstract bool ReadAttributeValue ();
abstract member ReadAttributeValue : unit -> bool
Public MustOverride Function ReadAttributeValue () As Boolean
Returns
true
if there are nodes to return.
false
if the reader is not positioned on an attribute node when the initial call is made or if all the attribute values have been read.
An empty attribute, such as, misc=""
, returns true
with a single node with a value of String.Empty
.
Exceptions
An XmlReader method was called before a previous asynchronous operation finished. In this case, InvalidOperationException is thrown with the message "An asynchronous operation is already in progress."
Remarks
Use this method after calling MoveToAttribute to read through the text or entity reference nodes that make up the attribute value. The Depth of the attribute value nodes is one plus the depth of the attribute node; it increments and decrements by one when you step into and out of general entity references.
Applies to
反馈
https://aka.ms/ContentUserFeedback。
即将发布:在整个 2024 年,我们将逐步淘汰作为内容反馈机制的“GitHub 问题”,并将其取代为新的反馈系统。 有关详细信息,请参阅:提交和查看相关反馈