IOExtensionsReadExactAsync - метод

public static Task<int> ReadExactAsync(
	this Stream stream,
	byte[] buffer,
	int index,
	int count,
	CancellationToken cancellationToken = default
)

<ExtensionAttribute>
Public Shared Function ReadExactAsync ( 
	stream As Stream,
	buffer As Byte(),
	index As Integer,
	count As Integer,
	Optional cancellationToken As CancellationToken = Nothing
) As Task(Of Integer)

public:
[ExtensionAttribute]
static Task<int>^ ReadExactAsync(
	Stream^ stream, 
	array<unsigned char>^ buffer, 
	int index, 
	int count, 
	CancellationToken cancellationToken = CancellationToken()
)

[<ExtensionAttribute>]
static member ReadExactAsync : 
        stream : Stream * 
        buffer : byte[] * 
        index : int * 
        count : int * 
        ?cancellationToken : CancellationToken 
(* Defaults:
        let _cancellationToken = defaultArg cancellationToken new CancellationToken()
*)
-> Task<int>