I'm beginning to think that this forum is less than helpful... I find it hard to beleive that nobody has enough experience to answer my three questions.
I have changed the web service from taking three long parameters to a single string parameter, but the SlideShowExtender is still not working, even though I have tested the web service and it is working correctly.
I have set the following attributes:
ssMain.ContextKey = "0,1,1"
ssMain.UseContextKey = true;
within the Page_Load method of the content page that holds the UpdatePanel and the AjaxControlToolkit.SlideShowExtender control.
For testing on my development machine, the following attributes are also being set:
ssMain.SlideShowServicePath = http://localhost:1497/my-msi.net/services/gemsFamilyImages.asmx;
ssMain.SlideShowServiceMethod = "LoadImageGroup";
I'm not getting any error messages, but the image never shows up, even though I have set:
ssMain.TargetControlID = "imgMain";
What am I missing? The test page works correctly and I'm not getting any compiler warnings when I build or run the site.
I have a breakpoint on the web service method: LoadImageGroup and it's not being called from the JavaScript code!