Hi denny
这个得分两步实现：
1， 检查你想要保存的EXIF信息是否是read-only状态的，可以参考：http://msdn.microsoft.com/en-us/library/windows/desktop/ee872003(v=vs.85).aspx，比如说像白平衡这个属性，是可以写入到Image中的：
System.Photo.WhiteBalance Photo Metadata Policy
2， 使用如下代码把可以写入的数据写入到图片中，注意：如果一旦有数据错误或者无法写入，那么所有的数据均无法写入。
var propertyToSave = new List<KeyValuePair<string, object>>() {
new KeyValuePair<string, object>("System.Photo.LensManufacturer", "Canon") };
await file.Properties.SavePropertiesAsync(propertyToSave);
--James
<THE CONTENT IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, WHETHER EXPRESS OR IMPLIED>
Thanks
MSDN Community Support
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