我想将CameraCaptureTask中的PhotoResult保存到我作为集合使用的类中,然后保存到隔离存储中：
void cameraCaptureTask_Completed(object sender,PhotoResult e)
这是ObservableCollection的一部分.我想将照片保存到此集合中.
[DataMember]
public Image VehicleImage
{
get
{
return _vehicleImage;
}
set
{
if (value != _vehicleImage)
{
_vehicleImage = value;
NotifyPropertyChanged("VehicleImage");
}
}
}
我正在使用以下示例：http://www.blog.ingenuitynow.net,在该示例中它可以正常工作,但它正在设置一个单独的隔离存储,我只想加入我现有的集合.
我想我不能使用图像类型.什么是完成我希望做的最好的方法？
只是为了回答下面的评论.这就是.Save正在做的：
public static void Save<T>(string name,T objectToSave)
{
using (IsolatedStorageFile storageFile = IsolatedStorageFile.GetUserStoreForApplication())
using (IsolatedStorageFileStream storageFileStream = new IsolatedStorageFileStream(name,System.IO.FileMode.Create,storageFile))
{
DataContractSerializer serializer = new DataContractSerializer(typeof(T));
serializer.WriteObject(storageFileStream,objectToSave);
}
}
我想我终于弄清楚了你的问题.在您的ObservableCollection中,我个人不会在那里保留图像.相反,我会保持BitmapSource使用较少的资源,但是您可能有理由为什么你这样做.
原文链接：https://www.f2er.com/windows/363690.html我的过程
>将Image.Source(BitmapSource)转换为一个字节[]
>将字节[]保存到存储
>从存储器加载byte []
>将字节[]转换为Image.Source(BitmapSource)
保存通用到隔离存储(在我的实用程序类：IsolatedStorage_Utility.cs)
public static void Save<T>(string fileName,T item)
{
using (IsolatedStorageFile storage = IsolatedStorageFile.GetUserStoreForApplication())
{
using (IsolatedStorageFileStream fileStream = new IsolatedStorageFileStream(fileName,FileMode.Create,storage))
{
DataContractSerializer serializer = new DataContractSerializer(typeof(T));
serializer.WriteObject(fileStream,item);
}
}
}
加载通用到隔离存储(在我的实用程序类：IsolatedStorage_Utility.cs)
public static T Load<T>(string fileName)
{
using (IsolatedStorageFile storage = IsolatedStorageFile.GetUserStoreForApplication())
{
using (IsolatedStorageFileStream fileStream = new IsolatedStorageFileStream(fileName,FileMode.Open,storage))
{
DataContractSerializer serializer = new DataContractSerializer(typeof(T));
return (T)serializer.ReadObject(fileStream);
}
}
}
将BitmapSource转换为byte [](在我的实用程序类中：Image_Utility.cs)
public static byte[] ImageToByteArray(BitmapSource bitmapSource)
{
using (MemoryStream stream = new MemoryStream())
{
WriteableBitmap writableBitmap = new WriteableBitmap(bitmapSource);
Extensions.SaveJpeg(writableBitmap,stream,bitmapSource.PixelWidth,bitmapSource.PixelHeight,100);
return stream.ToArray();
}
}
将byte []转换为BitmapSource(在我的实用程序类中：Image_Utility.cs)
public static BitmapSource ByteArrayToImage(byte[] bytes)
{
BitmapImage bitmapImage = null;
using (MemoryStream stream = new MemoryStream(bytes,bytes.Length))
{
bitmapImage = new BitmapImage();
bitmapImage.SetSource(stream);
}
return bitmapImage;
}
例
private void TestImageConversion(object sender,RoutedEventArgs e)
{
byte[] image1AsByteArray = Image_Utility.ImageToByteArray((BitmapSource)Image1.Source);
IsolatedStorage_Utility.Save<byte[]>("Image1.jpg",image1AsByteArray);
BitmapSource image1AsBitmapImage = Image_Utility.ByteArrayToImage(IsolatedStorage_Utility.Load<byte[]>("Image1.jpg"));
Image2.Source = image1AsBitmapImage;
}
记住这是一个jpg保存.如果要保存png,您需要使用CodePlex库或创建自己的PNGEncoder.
我希望这有帮助！
