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The WaveformGraph.Zoom event doesn't fire in IE

Hello,

 

I have a WaveformGraph embedded in an ASP.NET page. Everything works great, but I am having a little trouble with some of the events in IE.

 

I can zoom in both IE and FireFox without any problem. When that happens in FireFox, the WaveformGraph.Zoom event is raised and posted back to the server (I need this to update some state information on my page). But when I perform the same function in IE, no event seems to fire. From what I can tell there is no postback of any kind and it appears that everything is handled on the client side.

 

I'm sure this is all by design. But I still need to know when the user has zoomed in on the graph in IE. I have searched all over the forums and web and cannot find any explanation of similar problems.

 

Is there another way that I can receive event notifications in IE? If everything happens on the client side, that's okay too. I don't mind handling things in javascript. I just don't know what my options are or how to detect the zoom event in IE.

 

Any help would be greatly appreciated. Thanks!

Joel

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Greetings, sorry to hear you're having trouble. Can you verify that the event is definitely not firing? For example if you could set up the event to light an LED, that might be an interesting test just to narrow it down.

Product Support Engineer
National Instruments
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Hi James,

 

I've already set a breakpoing in Visual Studio and verified that the event is never called. I've also verified that I'm not seein any postback of any type during the zooming operation in IE. Everything seems to be happening on the client side and I'm not seeing anything come back to the server.

 

Joel

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Hmm, alright, that's good to know. I have a couple questions. First, what version of Internet Explorer are you using? Also, are -any- events being reported on internet explorer? Like button presses perhaps? Can you perhaps provide a simple program demonstrating this issue for me to look at more closely?

Product Support Engineer
National Instruments
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I'm running IE 8. I did set up a test project using the same steps in my other web application and the test project works. So I can only assume that something is happening in my code someplace. Unfortunately I cannot send a copy of my website. So I'll dig around more on my side and let you know if I have more questions.

 

Thanks for following up,

Joel

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