AsnReader.TryReadCharacterString Method
Definition
Important
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Reads the next value as character string with the specified tag and encoding type, copying the decoded value into a provided destination buffer.
public bool TryReadCharacterString (Span<char> destination, System.Formats.Asn1.UniversalTagNumber encodingType, out int charsWritten, System.Formats.Asn1.Asn1Tag? expectedTag = default);
member this.TryReadCharacterString : Span<char> * System.Formats.Asn1.UniversalTagNumber * int * Nullable<System.Formats.Asn1.Asn1Tag> -> bool
Public Function TryReadCharacterString (destination As Span(Of Char), encodingType As UniversalTagNumber, ByRef charsWritten As Integer, Optional expectedTag As Nullable(Of Asn1Tag) = Nothing) As Boolean
Parameters
- encodingType
- UniversalTagNumber
One of the enumeration values representing the value type to process.
- charsWritten
- Int32
On success, receives the number of chars written to destination
.
The tag to check for before reading, or null
for the universal tag that is appropriate to the requested encoding type.
Returns
true
and advances the reader if destination
had sufficient length to receive the value, otherwise false
and the reader does not advance.
Exceptions
encodingType
is not a known character string type.
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.
-or-
The string did not successfully decode.
Applies to
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