MemoryStream.BeginRead(Byte[], Int32, Int32, AsyncCallback, Object) Method
Definition
Important
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Begins an asynchronous read operation. (Consider using ReadAsync(Byte[], Int32, Int32, CancellationToken) instead.)
public:
override IAsyncResult ^ BeginRead(cli::array <System::Byte> ^ buffer, int offset, int count, AsyncCallback ^ callback, System::Object ^ state);public override IAsyncResult BeginRead (byte[] buffer, int offset, int count, AsyncCallback? callback, object? state);public override IAsyncResult BeginRead (byte[] buffer, int offset, int count, AsyncCallback callback, object state);public override IAsyncResult BeginRead (byte[] buffer, int offset, int count, AsyncCallback callback, object? state);override this.BeginRead : byte[] * int * int * AsyncCallback * obj -> IAsyncResultPublic Overrides Function BeginRead (buffer As Byte(), offset As Integer, count As Integer, callback As AsyncCallback, state As Object) As IAsyncResultParameters
- buffer
- Byte[]
The buffer to read the data into.
- offset
- Int32
The byte offset in buffer at which to begin writing data read from the memory stream.
- count
- Int32
The maximum number of bytes to read.
- callback
- AsyncCallback
An optional asynchronous callback, to be called when the read is complete.
- state
- Object
A user-provided object that distinguishes this particular asynchronous read request from other requests.
Returns
An IAsyncResult that represents the asynchronous read, which could still be pending.
Exceptions
Attempted an asynchronous read past the end of the memory stream, or a disk error occurred.
One or more of the arguments is invalid.
Methods were called after the memory stream was closed.
The current memory stream implementation does not support the read operation.
Remarks
Refer to the BeginRead remarks for additional usage information for this method.
