无法将照片属性保存到照片文件。 [英] trouble saving photo properties to photo file.

问题描述

 

请帮忙！我无法将照片属性保存到照片文件。

以下是代码，

1. StorageFolder photoFolder = KnownFolders.PicturesLibrary ; $
   
2. StorageFile photoFile = await photoFolder.CreateFileAsync（" image.jpg"）;
3. List< KeyValuePair< string，object>> data = new List< KeyValuePair< string，object>>（）;
4. data.Add（new KeyValuePair< string，object>（" System.Photo.CameraManufacturer"，" HELLO"）） ;&NBSP; &NBSP; &NBSP;
   
5. await photoFile.Properties.SavePropertiesAsync（data）;

它编译得很好，但运行时错误"值不在预期范围内。" 

谢谢。

< hr class ="sig">

Jerry

解决方案

StorageFile.Properties是只读的。

http://msdn.microsoft.com/ EN-US /库/窗/应用/ windows.storage.storagefile.properties.aspx

Hi, 

Please help! I have trouble saving photo properties to photo file.

Here is the code,

1. StorageFolder photoFolder = KnownFolders.PicturesLibrary;
   
2. StorageFile photoFile = await photoFolder.CreateFileAsync("image.jpg");
3. List<KeyValuePair<string, object>> data = new List<KeyValuePair<string, object>>();
4. data.Add(new KeyValuePair<string, object>("System.Photo.CameraManufacturer", "HELLO"));     
5. await photoFile.Properties.SavePropertiesAsync(data);

it compiled fine, but with runtime error "Value does not fall within the expected range." 

Thank you.

---

Jerry

解决方案

StorageFile.Properties is read-only.

http://msdn.microsoft.com/en-us/library/windows/apps/windows.storage.storagefile.properties.aspx

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