如何从IRandomAccessStream获取IBuffer

本文关键字：获取 IBuffer IRandomAccessStream | 更新日期: 2024-11-07 11:33:41

如果我有一个IRandomAccessStream对象，如何创建一个IBuffer对象？

我发现最简单的方法是通过MemoryStream.GetWindowsRuntimeBuffer：

IRandomAccessStream stream = ...;
using (var memoryStream = new MemoryStream())
{
    memoryStream.Capacity = (int)stream.Size;
    var ibuffer = memoryStream.GetWindowsRuntimeBuffer();
    await stream.ReadAsync(ibuffer, (uint)stream.Size, InputStreamOptions.None).AsTask().ConfigureAwait(false);
}