BufferedStream.EndRead(IAsyncResult) Method

Reference

Definition

Namespace:: System.IO

Assembly:: System.Runtime.dll

Assembly:: System.Runtime.Extensions.dll

Assembly:: mscorlib.dll

Assembly:: netstandard.dll

Source:: BufferedStream.cs

Source:: BufferedStream.cs

Source:: BufferedStream.cs

Important

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Waits for the pending asynchronous read operation to complete. (Consider using ReadAsync(Byte[], Int32, Int32, CancellationToken) instead.)

public:
 override int EndRead(IAsyncResult ^ asyncResult);

public override int EndRead (IAsyncResult asyncResult);

override this.EndRead : IAsyncResult -> int

Public Overrides Function EndRead (asyncResult As IAsyncResult) As Integer

Parameters

asyncResult: IAsyncResult

The reference to the pending asynchronous request to wait for.

Returns

Int32

The number of bytes read from the stream, between 0 (zero) and the number of bytes you requested. Streams only return 0 only at the end of the stream, otherwise, they should block until at least 1 byte is available.

Exceptions

ArgumentNullException

asyncResult is null.

ArgumentException

This IAsyncResult object was not created by calling BeginRead(Byte[], Int32, Int32, AsyncCallback, Object) on this class.

Remarks

In the .NET Framework 4 and earlier versions, you have to use methods such as BeginRead and EndRead to implement asynchronous file operations. These methods are still available in the .NET Framework 4.5 to support legacy code; however, the new async methods, such as ReadAsync, WriteAsync, and FlushAsync, help you implement asynchronous file operations more easily.

EndRead must be called with this IAsyncResult to find out how many bytes were read.

Applies to