通用Windows平台C#上的Exif标记 [英] Exif tags on universal Windows Platform C#
本文介绍了通用Windows平台C#上的Exif标记的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
如何在UWP(通用Windows平台)/Windows Phone 10上的jpeg图片中添加标签. WindowsBase和PresentationCore不可用.
How do I add Tags to a jpeg picture on UWP (universal Windows Platform) / Windows Phone 10. WindowsBase and PresentationCore not available.
推荐答案
以下是有关如何在Windows运行时中将Artist exif标记写入jpeg图像的示例.
Here is an example about how to write the Artist exif tag to a jpeg image in Windows Runtime.
您可以在此网页中找到所有的EXIF标签ID:
You can find all of the EXIF tag ids in this web page:
http://www.exiv2.org/tags.html
var src = await KnownFolders
.PicturesLibrary
.GetFileAsync("210644575939381015.jpg");
using (var stream = await src.OpenAsync(FileAccessMode.ReadWrite))
{
var decoder = await BitmapDecoder.CreateAsync(stream);
var encoder = await BitmapEncoder.CreateForTranscodingAsync(stream, decoder);
// var encoder = await BitmapEncoder.CreateAsync(BitmapEncoder.JpegEncoderId, stream);
var list = new List<KeyValuePair<string, BitmapTypedValue>>();
var artist = new BitmapTypedValue("Hello World", Windows.Foundation.PropertyType.String);
list.Add(new KeyValuePair<string, BitmapTypedValue>("/app1/ifd/exif/{ushort=315}", artist));
await encoder.BitmapProperties.SetPropertiesAsync(list);
await encoder.FlushAsync();
await stream.FlushAsync();
}
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