prevent user control from postback

[IT4EVR]

Is there a way to prevent a user control from posting back? I'm generating dynamic content on the user control but whenever I postback on the parent form, naturally it's posting the user control. I'm dynamically manipulating treeview nodes client side in javascript.

I read somewhere that you could facilitate this with IFRAMES or a hidden frame, but not sure how to create this functionality.

Or maybe there is another method that will work.

 

[ca8msm]

If you are modifying the content of the page through javascript, you'll have to post those changes to the server and then replicate them otherwise the page will be sent back in it's original format (as you are probably seeing). You can post those changes a few ways, one of which is to use hidden variables.

Also, don't forget that in your user control, you can use Page.IsPostBack to check whether the page is being posted back or not.


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[IT4EVR]

Can you show me how I would post these changes back to the server? You're right, I add or rearrange nodes and then I lose the changes.



Thanks...

 

[ca8msm]

Well, I'm assuming you have some kind of function that allows the user to add some dynamic content to your user control.

<input type="hidden" id="myDynamicContent" value="" />

If you include a control like the one above, when you add the content to the control, also set the value of the hidden element. This way the content will be posted back to the server. Your user control then just reads this hidden value and recreates the changes.


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