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Com.Objsys.Asn1.Runtime.Asn1Null

Asn1Null Class Reference

Inheritance diagram for Asn1Null:

Asn1Type Asn1TypeIF List of all members.

Detailed Description

This class represents the ASN.1 NULL built-in type.


Public Member Functions

override void Decode (Asn1PerDecodeBuffer buffer)
override void Decode (Asn1BerDecodeBuffer buffer, bool explicitTagging, int implicitLength)
virtual void DecodeXER (System.String buffer, System.String attrs)
virtual void DecodeXML (System.String buffer, System.String attrs)
override void Encode (Asn1PerOutputStream outs)
override void Encode (Asn1BerOutputStream outs, bool explicitTagging)
override void Encode (Asn1XerEncoder buffer, System.String elemName, System.String attribute)
override void Encode (Asn1XerEncoder buffer, System.String elemName)
override void Encode (Asn1PerEncodeBuffer buffer)
override int Encode (Asn1BerEncodeBuffer buffer, bool explicitTagging)
override System.String ToString ()

Static Public Attributes

static new readonly Asn1Tag _TAG
static readonly Asn1Null NULL_VALUE = new Asn1Null()

Member Function Documentation

override void Decode (  Asn1PerDecodeBuffer  buffer  )  [virtual]
 

This method decodes an ASN.1 null value in accordance with the Packed Encoding Rules (PER).

Parameters:
buffer Decode message buffer object

Reimplemented from Asn1Type.

override void Decode (  Asn1BerDecodeBuffer  buffer,
bool  explicitTagging,
int  implicitLength
)  [virtual]
 

This method decodes an ASN.1 null value including the UNIVERSAL tag value and length if explicit tagging is specified. This overloaded version uses the Basic Encoding Rules (BER).

Parameters:
buffer Decode message buffer object
explicitTagging Flag indicating element is explicitly tagged
implicitLength Length of contents if implicit

Reimplemented from Asn1Type.

virtual void DecodeXER (  System.String  buffer,
System.String  attrs
)  [virtual]
 

This method decodes an ASN.1 null value using the XML encoding rules (XER).

Parameters:
buffer String containing data to be decoded
attrs Attributes string from element tag

virtual void DecodeXML (  System.String  buffer,
System.String  attrs
)  [virtual]
 

This method decodes an ASN.1 null value using the XML schema encoding rules(asn2xsd).

Parameters:
buffer String containing data to be decoded
attrs Attributes string from element tag

override void Encode (  Asn1PerOutputStream  outs  )  [virtual]
 

This method encodes an ASN.1 null value in accordance with the Packed Encoding Rules (PER).

Also throws any exception thrown by the underlying Asn1PerOutputStream.

Parameters:
outs PER Output Stream object
Exceptions:
Asn1Exception Thrown, if operation is failed.

Reimplemented from Asn1Type.

override void Encode (  Asn1BerOutputStream  outs,
bool  explicitTagging
)  [virtual]
 

This method encodes and writes to the stream an ASN.1 NULL value including the UNIVERSAL tag value and length if explicit tagging is specified. This overloaded version uses the Basic Encoding Rules (BER).

Throws, Exception thrown by C# System.IO.Stream for I/O error

Parameters:
outs BER Output Stream object
explicitTagging Flag indicating explicit tagging should be done
Exceptions:
Asn1Exception Thrown, if operation is failed.

Reimplemented from Asn1Type.

override void Encode (  Asn1XerEncoder  buffer,
System.String  elemName,
System.String  attribute
)  [virtual]
 

This method encodes an ASN.1 null value using the XML Encoding as specified in the XML schema standard(asn2xsd).

Parameters:
buffer Encode message buffer object
elemName Element name
attribute Element attribute value

Reimplemented from Asn1Type.

override void Encode (  Asn1XerEncoder  buffer,
System.String  elemName
)  [virtual]
 

This method encodes an ASN.1 null value using the XML encoding rules (XER).

Parameters:
buffer Encode message buffer object
elemName Element name

Reimplemented from Asn1Type.

override void Encode (  Asn1PerEncodeBuffer  buffer  )  [virtual]
 

This method encodes an ASN.1 null value in accordance with the Packed Encoding Rules (PER).

Parameters:
buffer Encode message buffer object

Reimplemented from Asn1Type.

override int Encode (  Asn1BerEncodeBuffer  buffer,
bool  explicitTagging
)  [virtual]
 

This method encodes an ASN.1 null value including the UNIVERSAL tag value and length if explicit tagging is specified. This overloaded version used the Basic Encoding Rules (BER).

Parameters:
buffer Encode message buffer object
explicitTagging Flag indicating explicit tagging should be done
Returns:
Length (in octets) of encoded component

Reimplemented from Asn1Type.

override System.String ToString (   ) 
 

This method will return a string representation of the null value. The format is the ASN.1 value format for this type..

Returns:
Stringified representation of the value

Member Data Documentation

new readonly Asn1Tag _TAG [static]
 

The _TAG constant describes the universal tag for this data type (UNIVERSAL 5).

Reimplemented from Asn1Type.

readonly Asn1Null NULL_VALUE = new Asn1Null() [static]
 

The NULL_VALUE constant represents a NULL value.

Copyright © 1997-2005 Objective Systems,Inc.
All Rights Reserved.
This document may be distributed in any form, electronic
or otherwise, provided that it is distributed in its entirety
and that the copyright and this notice are included.
This file was last modified on 18 Nov 2005.
ASN1C C# Runtime Library, 5.8