[英]how can i delete a image from isolatedstorage
i have a listbox which is binded to images it gets from isolated storage here is how i get those images... 我有一个列表框绑定到它从隔离存储中获取的图像,这是我获取那些图像的方式...
foreach (string fileName in fileStorage.GetFileNames("images//*.*"))
{
if (fileName == null)
break;
string filepath = System.IO.Path.Combine("images", fileName);
using (IsolatedStorageFileStream imageStream = fileStorage.OpenFile(filepath, FileMode.Open, FileAccess.Read))
{
var imageSource = PictureDecoder.DecodeJpeg(imageStream);
BitmapImage bitmapImage = new BitmapImage();
bitmapImage.SetSource(imageStream);
vltBitmapImage.Add(bitmapImage);
}
}
this.vaultbox.ItemsSource = vltBitmapImage;
now i want to delete the selected image(multiple can be selected) 现在我要删除所选的图像(可以选择多个)
if (vaultbox.SelectedItems.Count != 0)
{
MessageBoxResult m = MessageBox.Show("Files will be deleted forever", "Are you sure?", MessageBoxButton.OKCancel);
if (m == MessageBoxResult.Cancel)
vaultbox.SelectedIndex = -1;
else if(m==MessageBoxResult.OK)
{
foreach (BitmapImage item in vaultbox.SelectedItems)
{
//what should i do here?
}
}
}
else
MessageBox.Show("No file selected");
You have to store a connection Image-File name. 您必须存储连接图像文件名。
For example: 例如:
public class ImageToName
{
public BitmapImage Image {get;set;}
public string FileName {get;set;}
}
A list will be changed to: 列表将更改为:
List<ImageToName> vltBitmapImage = new List<ImageToName>();
And fill the list in this way: 并以这种方式填写列表:
//read file
var imageSource = PictureDecoder.DecodeJpeg(imageStream);
BitmapImage bitmapImage = new BitmapImage();
bitmapImage.SetSource(imageStream);
var item = new ImageToName {Image = bitmapImage , Name = fileName };
vltBitmapImage.Add(item);
and you need to change ListBox
Declaration 并且您需要更改ListBox
声明
<ListBox.ItemTemplate>
<DataTemplate>
<Image Source={Binding Image}/>
</DataTemplate>
</ListBox.ItemTemplate>
So, you will be able to get File names from selected items. 因此,您将能够从所选项目中获取文件名。
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