Differences between readvalue, readstring, readcontentasstring, and readelementcontentasstring

Differences between ReadValue, ReadString, ReadContentAsString, and ReadElementContentAsString by: vkvi Source: Qianyi Network (original) Time:

• ReadOuterXml and ReadInnerXml
• Differences between Value, ReadString, ReadContentAsString, and ReadElementContentAsString

There are many methods and attributes for reading values in XmlReader. Here we take reading strings as an example to introduce their differences.

	From the upper-level node	Slave Node	Slave text node	"Pointer" movement
Value	Cannot be obtained	Cannot be obtained	Successful	Do not move
ReadString ()	Error	Successful	Successful	End Node of the current node
ReadContentAsString ()	Error	Error	Successful	End Node of the current node
ReadElementContentAsString ()	Error	Successful	Error	Next sibling node of the current node

• From upper-level node: read from the upper-level node of Text or CDATA
• Read from the upper-level node: read from the upper-level node of Text or CDATA
• From Text node: read from Text or CDATA
• "Pointer" movement: when reading is completed and moving to the next node

Example

XML snippets:

<N1> <n1.1> content1 </n1.1> <n1.2> content2 </n1.2> </n1>

If the current pointer is n1:

• Zero-length Value string
• ReadString () Error
• ReadContentAsString () Error
• ReadElementContentAsString () Error

If the current pointer is n1.1:

• Zero-length Value string
• ReadString () content1
• ReadContentAsString () Error
• ReadElementContentAsString () content1

If the current pointer is content1:

• Value content1
• ReadString () content1
• ReadContentAsString () content1
• ReadElementContentAsString () Error

"Pointer" movement:

• Value unchanged
• ReadString () </n1.1>
• ReadContentAsString () </n1.1>
• ReadElementContentAsString () <n1.2>