How to make when changing Image Source picture smoothly changed to a new one?

& lt; image grid.row = "0" margin = "10"
      Source = "{binding path = currentimage, updatesourcetrigger = propertychanged}" & gt;
  & lt; / image & gt;
Public ImageSource CurrentImage.
    {
      Get.
      {
        _CurrentImage = NULL;
        _CurrentImage = New Bitmapimage (New URI (_Listimageuri [_CurrentIndex]));
        Return _CurrentImage;
      }
    }

Answer 1

Creation:

Bitmap MyBitmap = / * Che thread * /;
New WriteableBitmap (System.Windows.Interop.imaging.createBitmapsourceFromhBitmap (
                  MyBitmap.GethBitmap (),
                  INTPTR.ZERO,
                  Int32Rect.Empty
                  Bitmapsizeoptions.fromemptyoptions ()));

or

New Bitmapimage (New Bitmapimage ("PACK: // Application :,,, / images / MyImage.png ")));

Overwriting pictures (change):

writeablebitmap wb = / * Suppose here already have data * /;
Bitmap MyBitmap = / * There is a new picture * /;
System.Drawing.imaging.Bitmapdata BMD =.
  newbitmap.lockbits (New System.Drawing.Rectangle (0, 0, newBitmap.width, newBitmap.Height),
            System.Drawing.imaging.ImageLockMode.Readonly,
            System.Drawing.imaging.pixelformat.format32bpppargb);
WB.WritePixels (New int32Rect (0, 0, newBitmap.width - 1, newbitmap.height - 1), bmd.scan0, bmd.stride * bmd.height, bmd.stride);
newbitmap.unlockbits (BMD);

In your case, a new bitmap is a new picture + on top of her drawn old with some transparency. On the trail. We increase transparency. Well, as long as the old picture does not disappear. Piham this logic in the timer.