- buffer
The array of characters that serves as the buffer to which the text contents are written. This value cannot be null.
- index
The offset within the buffer where the System.Xml.XmlReader can start to copy the results.
- count
The maximum number of characters to copy into the buffer. The actual number of characters copied is returned from this method.
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The number of characters read into the buffer. The value zero is returned when there is no more text content.
This is the asynchronous version of XmlReader.ReadValueChunk(Char[], int, int), with the same functionality. To use this method, you must set the XmlReaderSettings.Async flag to true.