AsnDecoder.ReadNamedBitList Method
Definition
Important
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Reads a NamedBitList from source with a specified tag under
the specified encoding rules.
public static System.Collections.BitArray ReadNamedBitList (ReadOnlySpan<byte> source, System.Formats.Asn1.AsnEncodingRules ruleSet, out int bytesConsumed, System.Formats.Asn1.Asn1Tag? expectedTag = default);static member ReadNamedBitList : ReadOnlySpan<byte> * System.Formats.Asn1.AsnEncodingRules * int * Nullable<System.Formats.Asn1.Asn1Tag> -> System.Collections.BitArrayPublic Shared Function ReadNamedBitList (source As ReadOnlySpan(Of Byte), ruleSet As AsnEncodingRules, ByRef bytesConsumed As Integer, Optional expectedTag As Nullable(Of Asn1Tag) = Nothing) As BitArrayParameters
- 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.
The tag to check for before reading, or null for the default tag (Universal 3).
Returns
The bits from the encoded value.
Exceptions
ruleSet is not defined.
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.
Remarks
The bit alignment performed by this method is to interpret the most significant bit in the first byte of the value as bit 0, with bits increasing in value until the least significant bit of the first byte, proceeding with the most significant bit of the second byte, and so on. This means that the number used in an ASN.1 NamedBitList construction is the index in the return value.
