BitmapImage in WPF does lock file

Question

I use:

Dim bmi As New BitmapImage(New Uri(fiInfo.FullName, UriKind.Absolute))
bmi.CacheOption = BitmapCacheOption.OnLoad

this does not Use OnLoad And file still is locked to overwrite on harddisk. Any idea how to unlock?

Regards

Answer 1

As shown in the question you link to, you'd need to call BeginInit and EndInit, like so as well as set the UriSource property:

Dim bmi As New BitmapImage()
bmi.BeginInit()
bmi.CacheOption = BitmapCacheOption.OnLoad
bmi.UriSource = New Uri(fiInfo.FullName, UriKind.Absolute)
bmi.EndInit()

Answer 2

Read the BitmapImage from file and rewrite it with a MemoryStream:

MemoryStream ms = new MemoryStream();
BitmapImage bi = new BitmapImage();
byte[] bytArray = File.ReadAllBytes(@"test.jpg");
ms.Write(bytArray, 0, bytArray.Length);ms.Position = 0;
bi.BeginInit();
bi.StreamSource = ms;
bi.EndInit();
image.Source = bi;