FileStream.BeginWrite(Byte[], Int32, Int32, AsyncCallback, Object) 方法

  • 參考

定義

命名空間:
System.IO
組件:
System.Runtime.dll
組件:
mscorlib.dll
組件:
netstandard.dll
來源:
FileStream.cs
來源:
FileStream.cs
來源:
FileStream.cs

開始非同步的寫入作業。 請考慮改用 WriteAsync(Byte[], Int32, Int32, CancellationToken)。

public:
 override IAsyncResult ^ BeginWrite(cli::array <System::Byte> ^ array, int offset, int numBytes, AsyncCallback ^ callback, System::Object ^ state);
public:
 override IAsyncResult ^ BeginWrite(cli::array <System::Byte> ^ buffer, int offset, int count, AsyncCallback ^ callback, System::Object ^ state);
public:
 override IAsyncResult ^ BeginWrite(cli::array <System::Byte> ^ array, int offset, int numBytes, AsyncCallback ^ userCallback, System::Object ^ stateObject);
public override IAsyncResult BeginWrite (byte[] array, int offset, int numBytes, AsyncCallback? callback, object? state);
public override IAsyncResult BeginWrite (byte[] buffer, int offset, int count, AsyncCallback? callback, object? state);
public override IAsyncResult BeginWrite (byte[] buffer, int offset, int count, AsyncCallback callback, object state);
public override IAsyncResult BeginWrite (byte[] array, int offset, int numBytes, AsyncCallback callback, object state);
public override IAsyncResult BeginWrite (byte[] array, int offset, int numBytes, AsyncCallback callback, object? state);
public override IAsyncResult BeginWrite (byte[] array, int offset, int numBytes, AsyncCallback userCallback, object stateObject);
override this.BeginWrite : byte[] * int * int * AsyncCallback * obj -> IAsyncResult
override this.BeginWrite : byte[] * int * int * AsyncCallback * obj -> IAsyncResult
override this.BeginWrite : byte[] * int * int * AsyncCallback * obj -> IAsyncResult
Public Overrides Function BeginWrite (array As Byte(), offset As Integer, numBytes As Integer, callback As AsyncCallback, state As Object) As IAsyncResult
Public Overrides Function BeginWrite (buffer As Byte(), offset As Integer, count As Integer, callback As AsyncCallback, state As Object) As IAsyncResult
Public Overrides Function BeginWrite (array As Byte(), offset As Integer, numBytes As Integer, userCallback As AsyncCallback, stateObject As Object) As IAsyncResult

參數

arraybuffer
Byte[]

包含要寫入目前資料流之資料的緩衝區。

offset
Int32

array 中以零起始的位元組位移，即開始將位元組複製到目前資料流的位置。

numBytescount
Int32

寫入的最大位元組數。

callbackuserCallback
AsyncCallback

在非同步寫入作業完成時所呼叫的方法。

statestateObject
Object

使用者所提供的物件，其可以從其他要求中區分出這個特定非同步寫入的要求。

傳回

IAsyncResult

物件，參考非同步寫入。

例外狀況

ArgumentException

array 長度減去 offset 小於 numBytes。

ArgumentNullException

array 為 null。

ArgumentOutOfRangeException

offset 或 numBytes 為負。

NotSupportedException

資料流不支援寫入。

ObjectDisposedException

資料流已關閉。

IOException

發生 I/O 錯誤。

適用於