StorageStreamTransaction StorageStreamTransaction StorageStreamTransaction StorageStreamTransaction Class

Definition

public : sealed class StorageStreamTransaction : IClosable, IStorageStreamTransactionpublic sealed class StorageStreamTransaction : IDisposable, IStorageStreamTransactionPublic NotInheritable Class StorageStreamTransaction Implements IDisposable, IStorageStreamTransaction// You can use this class in JavaScript.

Attributes

ContractVersionAttribute

Examples

The File Access sample shows you how to use a StorageStreamTransaction object to perform a transacted write operation on a file.

try
{
    if (file != null)
    {
        using (StorageStreamTransaction transaction = await file.OpenTransactedWriteAsync())
        {
            using (DataWriter dataWriter = new DataWriter(transaction.Stream))
            {
                dataWriter.WriteString("Swift as a shadow");
                transaction.Stream.Size = await dataWriter.StoreAsync(); // reset stream size to override the file
                await transaction.CommitAsync();
            }
        }
    }
}
// Use catch blocks to handle errors
catch (FileNotFoundException)
{
    // For example, handle a file not found error
}

if ( file !== null) {
    file.openTransactedWriteAsync().then(
        function (transaction) {
            var dataWriter = new Windows.Storage.Streams.DataWriter(transaction.stream);
            dataWriter.writeString("Swift as a shadow");
            dataWriter.storeAsync().then(function (size) {
                transaction.stream.size = size; // reset stream size to override the file
                transaction.commitAsync().done(function () {
                    // Text written to file

                    // Close stream
                    transaction.close();
                });
            });
        },
        // Handle errors with an error function
        function (error) {
            // Proccess errors
        }
    );
}

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

public : IRandomAccessStream Stream { get; }public IRandomAccessStream Stream { get; }Public ReadOnly Property Stream As IRandomAccessStream// You can use this property in JavaScript.

public : void Close()This member is not implemented in C#This member is not implemented in VB.Net// You can use this method in JavaScript.

public : IAsyncAction CommitAsync()public IAsyncAction CommitAsync()Public Function CommitAsync() As IAsyncAction// You can use this method in JavaScript.

This member is not implemented in C++void Dispose()Sub Disposevoid Dispose()

See Also

• File Access sample