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XmlValidatingReader::ReadElementContentAsBinHex Method

Reads the element and decodes the BinHex content.

Namespace:  System.Xml
Assembly:  System.Xml (in System.Xml.dll)

public:
virtual int ReadElementContentAsBinHex(
	array<unsigned char>^ buffer, 
	int index, 
	int count
) override

Parameters

buffer
Type: array<System::Byte>

The buffer into which to copy the resulting text. This value cannot be nullptr.

index
Type: System::Int32

The offset into the buffer where to start copying the result.

count
Type: System::Int32

The maximum number of bytes to copy into the buffer. The actual number of bytes copied is returned from this method.

Return Value

Type: System::Int32
The number of bytes written to the buffer.

ExceptionCondition
ArgumentNullException

The buffer value is nullptr.

InvalidOperationException

The current node is not an element node.

ArgumentOutOfRangeException

The index into the buffer or index + count is larger than the allocated buffer size.

NotSupportedException

The XmlValidatingReader implementation does not support this method.

XmlException

The element contains mixed-content.

FormatException

The content cannot be converted to the requested type.

NoteNote

The XmlValidatingReader class is obsolete in .NET Framework 2.0. You can create a validating XmlReader instance by using the XmlReaderSettings class and the Create method. For more information, see the Remarks section of the XmlReader reference page.

This method reads the element content, decodes it using BinHex encoding, and returns the decoded binary bytes (for example, an inline BinHex encoded GIF image) into the buffer.

This method can read only simple-content elements. The element can contain text, white space, significant white space, CDATA sections, comments, and processing instructions. It can also contain entity references, which are automatically expanded. The element cannot have child elements.

This method is very similar to the ReadContentAsBinHex method except that it can be called only on element node types.

If the count value is higher than the number of bytes in the document, or if it is equal to the number of bytes in the document, the XmlValidatingReader reads all the remaining bytes in the document and returns the number of bytes read. The next XmlValidatingReader method call returns a zero and moves the reader to the node following the EndElement.

If you call Read before all of the element content is consumed, the reader may behave as if the first content was consumed and then the Read method was called. This means that the reader will read all the text until the end element is encountered. It will then read the end tag node, read the next node, and then position itself on the next subsequent node.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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