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SqlFileStream.BeginRead(Byte[], Int32, Int32, AsyncCallback, Object) Method

Definition

Begins an asynchronous read operation.

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);
override this.BeginRead : byte[] * int * int * AsyncCallback * obj -> IAsyncResult
Public Overrides Function BeginRead (buffer As Byte(), offset As Integer, count As Integer, callback As AsyncCallback, state As Object) As IAsyncResult

Parameters

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 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

Reading data is not supported on the stream.

Remarks

Use the CanRead property to determine whether the current instance supports reading.

Applies to

See also