Newb: Update XAML Image Element During Runtime (WIndows Phone, .NET 4)

Greetings all,

Thanks for reading and sharing any insights. I've created a new simple Windows Phone 7 application. I have two Image objects on the form I would like to update with various .png files. I have included the .png files into my project, and I believe I am building proper URi resources pointing to these files.

Uri myImage1URi = new Uri( strImage1, UriKind.RelativeOrAbsolute );
Uri myImage2URi = new Uri( strImage2, UriKind.RelativeOrAbsolute );

System.Windows.Media.Imaging.BitmapImage bi1 = new System.Windows.Media.Imaging.BitmapImage(myImage1URi);
System.Windows.Media.Imaging.BitmapImage bi2 = new System.Windows.Media.Imaging.BitmapImage(myImage2URi);

image1.Source = bi1;
image1.Stretch = Stretch.Fill;
image2.Source = bi2;
image2.Stretch = Stretch.Fill;

This alone is not accomplishing what I want (to update the images to the two from the URi's).

I k开发者_开发问答now there is something a bit off going on (IE: I am doing something dumb) in that all of the BitmapImage class descriptions mention that I have to do a .BeginInit() before I work with the BitmapImage object, and a .EndInit() call afterwards. These method calls don't work for me, so I know something is amiss....

Or maybe I am competely off base and I simply need a way to tell my main window to repaint itself? That thought has occurred to me as well.

Thanks again.

The following will load an image that is in the appropriate path and is set as having a build action content.

myImg.Source = new BitmapImage(new Uri("/images/filename.png", UriKind.Relative));

It assumes XAML on the page like:

<Image x:Name="myImg" />

This seems very similar to what you're doing. Simplify what you're doing ot get it working.
Does it work with just using one image?
Is the path in strImageN a valid path?
Do the image files have their build action set to Content?