AsnDecoder.TryReadInt64 Method

Definition

Namespace:

System.Formats.Asn1

Assembly:

System.Formats.Asn1.dll

Package:

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

Source:

AsnDecoder.Integer.cs

Attempts to read an Integer value from source with a specified tag under the specified encoding rules as a signed 64-bit value.

public static bool TryReadInt64 (ReadOnlySpan<byte> source, System.Formats.Asn1.AsnEncodingRules ruleSet, out long value, out int bytesConsumed, System.Formats.Asn1.Asn1Tag? expectedTag = default);

static member TryReadInt64 : ReadOnlySpan<byte> * System.Formats.Asn1.AsnEncodingRules * int64 * int * Nullable<System.Formats.Asn1.Asn1Tag> -> bool

Public Shared Function TryReadInt64 (source As ReadOnlySpan(Of Byte), ruleSet As AsnEncodingRules, ByRef value As Long, ByRef bytesConsumed As Integer, Optional expectedTag As Nullable(Of Asn1Tag) = Nothing) As Boolean

Parameters

source

ReadOnlySpan<Byte>

The buffer containing encoded data.

ruleSet

AsnEncodingRules

The encoding constraints to use when interpreting the data.

value

Int64

On success, receives the interpreted numeric value. This parameter is treated as uninitialized.

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 2).

Returns

Boolean

true if the Integer represents value is between Int64.MinValue and Int64.MaxValue, inclusive; otherwise, false.

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.