FileIO.WriteBufferAsync(IStorageFile, IBuffer) Method

Reference

Definition

Namespace:: Windows.Storage

Important

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Edit

Writes data from a buffer to the specified file.

public:
 static IAsyncAction ^ WriteBufferAsync(IStorageFile ^ file, IBuffer ^ buffer);

/// [Windows.Foundation.Metadata.RemoteAsync]
 static IAsyncAction WriteBufferAsync(IStorageFile const& file, IBuffer const& buffer);

[Windows.Foundation.Metadata.RemoteAsync]
public static IAsyncAction WriteBufferAsync(IStorageFile file, IBuffer buffer);

function writeBufferAsync(file, buffer)

Public Shared Function WriteBufferAsync (file As IStorageFile, buffer As IBuffer) As IAsyncAction

Parameters

file: IStorageFile

The file that the buffer of data is written to.

buffer: IBuffer

The buffer that contains the data to write.

Returns

IAsyncAction

No object or value is returned when this method completes.

Attributes: RemoteAsyncAttribute

Examples

The File Access sample shows you how to use WriteBufferAsync to write data from a buffer to a file.

try
{
    if (file != null)
    {
        IBuffer buffer = CryptographicBuffer.GenerateRandom(10);
        await FileIO.WriteBufferAsync(file, buffer);
        // Perform additional tasks after file is written
    }
}
// Handle errors with catch blocks
catch (FileNotFoundException)
{
    // For example, handle file not found
}

In the example, file is a local variable that contains a StorageFile that represents the file to write.

Although the WriteBufferAsync methods don't have a return value, you can still perform additional tasks after the text is written to the file, as the example shows.

Applies to

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