AsnDecoder.ReadEnumeratedBytes Method

Definition

Namespace:

System.Formats.Asn1

Assembly:

System.Formats.Asn1.dll

Package:

System.Formats.Asn1 v9.0.0-preview.4.24266.19

Source:

AsnDecoder.Enumerated.cs

Reads an Enumerated value from source with a specified tag under the specified encoding rules, returning the contents as a slice of the buffer.

public static ReadOnlySpan<byte> ReadEnumeratedBytes (ReadOnlySpan<byte> source, System.Formats.Asn1.AsnEncodingRules ruleSet, out int bytesConsumed, System.Formats.Asn1.Asn1Tag? expectedTag = default);

static member ReadEnumeratedBytes : ReadOnlySpan<byte> * System.Formats.Asn1.AsnEncodingRules * int * Nullable<System.Formats.Asn1.Asn1Tag> -> ReadOnlySpan<byte>

Public Shared Function ReadEnumeratedBytes (source As ReadOnlySpan(Of Byte), ruleSet As AsnEncodingRules, ByRef bytesConsumed As Integer, Optional expectedTag As Nullable(Of Asn1Tag) = Nothing) As ReadOnlySpan(Of Byte)

Parameters

source

ReadOnlySpan<Byte>

The buffer containing encoded data.

ruleSet

AsnEncodingRules

The encoding constraints to use when interpreting the data.

bytesConsumed

Int32

When this method returns, the total number of bytes for the encoded value. This parameter is treated as uninitialized.

expectedTag

Nullable<Asn1Tag>

The tag to check for before reading, or null for the default tag (Universal 10).

Returns

ReadOnlySpan<Byte>

The slice of the buffer containing the bytes of the Enumerated value, in signed big-endian form.

Exceptions

ArgumentOutOfRangeException

ruleSet is not defined.

AsnContentException

The next value does not have the correct tag.

-or-

The length encoding is not valid under the current encoding rules.

-or-

The contents are not valid under the current encoding rules.

ArgumentException

expectedTag.TagClass is Universal, but expectedTag.TagValue is not correct for the method.