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我创建了将 InkManager 保存在本地存储中的方法,代码如下。但是当我访问它两次时,我的错误...

灾难性故障(HRESULT 异常:0x8000FFFF (E_UNEXPECTED))

可能的错误是什么?

编码:

try
{
    StorageFile myMerge = await ApplicationData.Current.LocalFolder.CreateFileAsync("sign.png", CreationCollisionOption.ReplaceExisting);         

    using (IOutputStream signature = await myMerge.OpenAsync(FileAccessMode.ReadWrite))
    {
        if (signature != null)
        {
            await _inkManager.SaveAsync(signature);

            signature.Dispose();
        }
    }
    return myMerge;
}
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