File.WriteAllBytesAsync Method
Definition
Important
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Overloads
| WriteAllBytesAsync(String, Byte[], CancellationToken) |
Asynchronously creates a new file, writes the specified byte array to the file, and then closes the file. If the target file already exists, it is truncated and overwritten. |
| WriteAllBytesAsync(String, ReadOnlyMemory<Byte>, CancellationToken) |
Asynchronously creates a new file, writes the specified byte array to the file, and then closes the file. If the target file already exists, it is truncated and overwritten. |
WriteAllBytesAsync(String, Byte[], CancellationToken)
- Source:
- File.cs
- Source:
- File.cs
- Source:
- File.cs
Asynchronously creates a new file, writes the specified byte array to the file, and then closes the file. If the target file already exists, it is truncated and overwritten.
public static System.Threading.Tasks.Task WriteAllBytesAsync (string path, byte[] bytes, System.Threading.CancellationToken cancellationToken = default);static member WriteAllBytesAsync : string * byte[] * System.Threading.CancellationToken -> System.Threading.Tasks.TaskPublic Shared Function WriteAllBytesAsync (path As String, bytes As Byte(), Optional cancellationToken As CancellationToken = Nothing) As TaskParameters
- path
- String
The file to write to.
- bytes
- Byte[]
The bytes to write to the file.
- cancellationToken
- CancellationToken
The token to monitor for cancellation requests. The default value is None.
Returns
A task that represents the asynchronous write operation.
Exceptions
The cancellation token was canceled. This exception is stored into the returned task.
Remarks
This method stores in the task it returns all non-usage exceptions that the method's synchronous counterpart can throw. If an exception is stored into the returned task, that exception will be thrown when the task is awaited. Usage exceptions, such as ArgumentException, are still thrown synchronously. For the stored exceptions, see the exceptions thrown by WriteAllBytes(String, Byte[]).
Applies to
WriteAllBytesAsync(String, ReadOnlyMemory<Byte>, CancellationToken)
Asynchronously creates a new file, writes the specified byte array to the file, and then closes the file. If the target file already exists, it is truncated and overwritten.
public static System.Threading.Tasks.Task WriteAllBytesAsync (string path, ReadOnlyMemory<byte> bytes, System.Threading.CancellationToken cancellationToken = default);static member WriteAllBytesAsync : string * ReadOnlyMemory<byte> * System.Threading.CancellationToken -> System.Threading.Tasks.TaskPublic Shared Function WriteAllBytesAsync (path As String, bytes As ReadOnlyMemory(Of Byte), Optional cancellationToken As CancellationToken = Nothing) As TaskParameters
- path
- String
The file to write to.
- bytes
- ReadOnlyMemory<Byte>
The bytes to write to the file.
- cancellationToken
- CancellationToken
The token to monitor for cancellation requests. The default value is None.
Returns
A task that represents the asynchronous write operation.
Exceptions
path is null.
path is empty.
The cancellation token was canceled. This exception is stored into the returned task.
