How does WPF delete an opened image file?

 

In WPF, you may encounter this situation. The image is opened on the interface and cannot be deleted if you want to delete it using File. Delate.

 

For example:

 

XAML:

 

<Window x: Class = "WPF_Testing_Application.Window1"

 

Xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"

 

Xmlns: x = "http://schemas.microsoft.com/winfx/2006/xaml"

 

Title = "Window1" Height = "300" Width = "300">

 

<StackPanel Height = "100" Name = "stackPanel1" Width = "200"/>

 

</Window>

 

Code:

 

Public Window1 ()

 

{

 

InitializeComponent ();

 

BitmapImage bi = new BitmapImage ();

 

Bi. BeginInit ();

 

Bi. UriSource = new Uri (@ "C: \ Users \ Public \ Pictures \ Sample Pictures \ Autumn Leaves-Copy.jpg ");

 

Bi. EndInit ();

 

Image image1 = new Image ();

 

Image1.Source = bi;

 

StackPanel1.Children. Add (image1 );

 

StackPanel1.MouseLeftButtonDown + = delegate {DeleteImage ();};

 

}

 

Private void DeleteImage ()

 

{

 

StackPanel1.Children. RemoveAt (0 );

 

File. Delete (@ "C: \ Users \ Public \ Pictures \ Sample Pictures \ Autumn Leaves-Copy.jpg ");

 

}

 

 

In this case, the file is occupied and cannot be deleted.

 

 

Solution: www.2cto.com

 

Change the code:

 

Public Window1 ()

 

{

 

InitializeComponent ();

 

BitmapImage bi = new BitmapImage ();

 

Bi. BeginInit ();

 

Bi. CacheOption = BitmapCacheOption. OnLoad; // Add this line

 

Bi. UriSource = new Uri (@ "C: \ Users \ Public \ Pictures \ Sample Pictures \ Autumn Leaves-Copy.jpg ");

 

Bi. EndInit ();

 

Image image1 = new Image ();

 

Image1.Source = bi;

 

StackPanel1.Children. Add (image1 );

 

StackPanel1.MouseLeftButtonDown + = delegate {DeleteImage ();};

 

}

 

You can.

If you use ObservableCollection <BitmapImage> As datasouce,

 

BitmapImage bmp = new BitmapImage ();

 

Bmp. BeginInit ();

 

Bmp. UriSource = new Uri ("Blue hills.jpg", UriKind. Relative );

 

Bmp. CacheOption = BitmapCacheOption. OnLoad;

 

Bmp. EndInit ();

 

 

You can delete it in the following ways:

 

BitmapImage img = (BitmapImage) listPictures. SelectedItem;

 

File. Delete (img. UriSource. ToString ());

 

From soft2buy