存储流在C＃和WinRT的到文件(save stream to file in c# and win

我在C＃和WinRT的：

var stream = await speech.GetSpeakStreamAsync(SpeechText.Text, language);

stream是一个Windows.Storage.Streams.IRandomAccessStream

所以我完全地新的C＃和WinRT的。我该如何拯救这个流方含一个wav文件到文件？在此先感谢，圣殿

Answer 1:

该IRandomAccessStream有一个名为方法GetInputStreamAt http://msdn.microsoft.com/en-US/library/windows/apps/windows.storage.streams.irandomaccessstream

IInputStream inputStream = stream.GetInputStreamAt(0);

这可以让你的IInputStream。

所述IInputStream接口定义只有一个方法，ReadAsync，它可以让你将字节读入一个IBuffer对象。 Windows.Storage.Stream还包括创建一个基于一个IInputStream对象上，然后读取来自流众多.NET对象以及字节数组一个DataReader类。 http://www.charlespetzold.com/blog/2011/11/080203.html ， http://msdn.microsoft.com/library/windows/apps/BR208119

using (var stream = new InMemoryRandomAccessStream())
{
    // for example, render pdf page
    var pdfPage = document.GetPage((uint)i);
    await pdfPage.RenderToStreamAsync(stream);

    // then, write page to file
    using (var reader = new DataReader(stream))
    {
        await reader.LoadAsync((uint)stream.Size);
        var buffer = new byte[(int)stream.Size];
        reader.ReadBytes(buffer);
        await Windows.Storage.FileIO.WriteBytesAsync(file, buffer);
    }
}

现在你有一个包含所有读取的字节的缓冲区。

你现在可以此缓冲区保存到一个文件http://blog.jerrynixon.com/2012/06/windows-8-how-to-read-files-in-winrt.html

var file = await Windows.Storage.ApplicationData.Current.LocalFolder.CreateFileAsync("MyWav.wav", Windows.Storage.CreationCollisionOption.ReplaceExisting);
await Windows.Storage.FileIO.WriteBytesAsync(file, buffer);

Answer 2:

我不能把代码添加到评论，所以这里是在vb.net的代码：Dim gesprochenesWort作为Windows.Storage.Streams.IRandomAccessStream gesprochenesWort =等待Sprich.GetSpeakStreamAsync（“达斯北京时间EIN Beispieltext”，“德”）

    Dim Eingabestream As Windows.Storage.Streams.IInputStream = gesprochenesWort.GetInputStreamAt(0)

    Dim Datenleser As New Windows.Storage.Streams.DataReader(Eingabestream)
    Await Datenleser.LoadAsync(CUInt(gesprochenesWort.Size))

    'Dim Dateipuffer As Byte() = New Byte(CInt(gesprochenesWort.Size) - 1) {}
    Dim Dateipuffer(gesprochenesWort.Size - 1) As Byte

    Datenleser.ReadBytes(Dateipuffer)

    Dim Dateiname As String = "MybestWav.wav"

    Dim Datei = Await Windows.Storage.KnownFolders.MusicLibrary.CreateFileAsync(Dateiname, Windows.Storage.CreationCollisionOption.ReplaceExisting)

    Await Windows.Storage.FileIO.WriteBytesAsync(Datei, Dateipuffer)

;非常感谢你。

最好的问候，圣殿

文章来源: save stream to file in c# and winrt