public void Dispose()
{
if (this.image != null)
{
ImageCache.releaseImage(image);
this.image.Dispose();
}
this.image = null;
GC.SuppressFinalize(this);
}
/// <summary>
/// releases the image from memory and file. To get it back use ensureImageExists()
/// </summary>
public void releaseImage()
{
if (imageDisposable)
{
if (this.image != null && ImageCache.releaseImage(image))
{
this.image.Dispose(); // only local images are disposed, those from image cache will stay there.
}
this.image = null;
}
GC.Collect();
}
/// <summary>
/// delete image file inside the zip file, or return a name of file to delete on the hard drive.
/// Make sure you dispose of this PhotoDescr before deleting the file.
/// </summary>
public string deleteFromDisk()
{
string ret = null;
if (this.imageSourceIsLocal)
{
// make sure the image is not used/locked and we can actually delete it:
releaseImage();
ImageCache.releaseImage(m_imageFileName);
GC.Collect();
int pos = m_imageFileName.IndexOf("|");
if (pos >= 0)
{
// this is a .zip or .gpz file
string zipFileName = m_imageFileName.Substring(0, pos);
if (!File.Exists(zipFileName))
{
LibSys.StatusBar.Error("Failed to open Zip");
throw new InvalidOperationException("'" + zipFileName + "' not found or not a valid zip file");
}
using (ZipFile zip = new ZipFile(zipFileName))
{
string photoFileName = m_imageFileName.Substring(pos + 1);
ZipEntry zipEntry = zip.GetEntry(photoFileName);
if (zipEntry != null)
{
zip.BeginUpdate();
zip.Delete(zipEntry);
}
else
{
zip.Close();
throw new InvalidOperationException("'" + photoFileName + "' is not found inside " + zipFileName);
}
zip.CommitUpdate();
}
}
else
{
ret = m_imageFileName;
}
}
return(ret);
}
