轉換字符串到流

Question

所以我試圖序列化和反序列化從Windows.UI.Input.Inking的IReadOnlyList<InkStroke>我UWP應用程序，我用下面的代碼序列化數據：

var stream = new InMemoryRandomAccessStream(); 
await canvas.InkPresenter.StrokeContainer.SaveAsync(stream); 
await stream.FlushAsync(); 

var buffer = new byte[stream.Size]; 
await stream.AsStream().ReadAsync(buffer, 0, buffer.Length); 
return Convert.ToBase64String(buffer); 

我如何反序列化該字符串創建一個IInputStream（或代替IRandomAccessStream）可以在StrokeContainer.LoadAsync()方法中使用？

Answer 1

您可以使用下面的代碼和平....

byte[] bytes = Convert.FromBase64String(stringinput); 
MemoryStream stream = new MemoryStream(bytes); 
IInputStream is=stream.AsRandomAccessStream(); //It will return an IInputStream object 

Answer 2

嘗試this：

byte[] data = Convert.FromBase64String(encodedString); 
InMemoryRandomAccessStream inputStream = new InMemoryRandomAccessStream(); 
await inputStream.WriteAsync(data.AsBuffer()); 
inputStream.Seek(0); 
await canvas.InkPresenter.StrokeContainer.LoadAsync(inputStream);