private async Task <Dictionary <string, string> > GetProperties(StorageFile temporaryFile, CancellationToken cancellationToken)
{
StorageItemContentProperties properties = temporaryFile.Properties;
MusicProperties musicProperties = await properties.GetMusicPropertiesAsync();
VideoProperties videoProperties = await properties.GetVideoPropertiesAsync();
BasicProperties basicProperties = await temporaryFile.GetBasicPropertiesAsync();
CancelTask(cancellationToken);
Dictionary <string, string> tempDictionary = new Dictionary <string, string>();
tempDictionary["Display Name"] = temporaryFile.DisplayName;
tempDictionary["File Type"] = temporaryFile.FileType;
tempDictionary["Current Folder Path"] = temporaryFile.FolderRelativeId;
tempDictionary["Size"] = string.Format("{0:0.00}", (Convert.ToDouble(basicProperties.Size) / 1048576d)) + " Mb";
tempDictionary["Creation Date"] = temporaryFile.DateCreated.ToString();
tempDictionary["Modified Date"] = basicProperties.DateModified.ToString();
tempDictionary["Audio Bit Rate"] = musicProperties.Bitrate + " bps";
tempDictionary["Length"] = videoProperties.Duration.ToString("hh\\:mm\\:ss");
tempDictionary["Frame Width"] = videoProperties.Width + "";
tempDictionary["Frame Height"] = videoProperties.Height + "";
tempDictionary["Orientation"] = videoProperties.Orientation + "";
tempDictionary["Total Bit Rate"] = videoProperties.Bitrate + " bps";
CancelTask(cancellationToken);
return(tempDictionary);
}
// 通过 StorageFolder.Properties 的 GetImagePropertiesAsync(), GetVideoPropertiesAsync(), GetMusicPropertiesAsync(), GetDocumentPropertiesAsync() 方法获取文件的属性
private async Task ShowProperties4(StorageFile storageFile)
{
StorageItemContentProperties storageItemContentProperties = storageFile.Properties;
ImageProperties imageProperties = await storageItemContentProperties.GetImagePropertiesAsync(); // 图片属性
VideoProperties videoProperties = await storageItemContentProperties.GetVideoPropertiesAsync(); // 视频属性
MusicProperties musicProperties = await storageItemContentProperties.GetMusicPropertiesAsync(); // 音频属性
DocumentProperties documentProperties = await storageItemContentProperties.GetDocumentPropertiesAsync(); // 文档属性
lblMsg.Text += "image width：" + imageProperties.Width;
lblMsg.Text += Environment.NewLine;
lblMsg.Text += "image height：" + imageProperties.Height;
lblMsg.Text += Environment.NewLine;
}