User control updatepanel not updating
While registering we need to provide the Control name along with the data item for the control which we want to render. we can call args.get_data Items()to retreive the data from the dataitem collections.If we click on Button1 now, it will update the text of Label1, but though we have registered the Label2 with the script manager still its value will not be reflect. After that we have set the Control Value by from the data item collection using .
The user will likely notice the interruption, and this can interfere with his train of thought.
This is different from the smooth responsiveness we are accustomed to with desktop applications and can be disconcerting or annoying to users.
So, In case we have multiple control that we need to update we can use the control name to retrieve the value form the Controldata Items.
Hope this gives you a good idea that what needs to do to update controls which is outside of updatepanel during partial page rendering.
Also, check out the AJAX Videos which discuss usage of not only the Update Panel but also the AJAX Control Toolkit.
In this tutorial, we will be looking at how we can programmatically make an Update Panel update when certain criteria are met. Page Protected Sub but Update_Click(By Val sender As Object, By Val e As System.
The Update Panel is a container control without any UI of its own.
It allows you to mark page regions as eligible to be refreshed independently.
This thing is quite simple when we are trying to update any control which is inside the updatepanel itself. We have one Button say Button1, which is also inside the Update Panel.
But, The problem may come when we want to update the controls which are outside of Update Panel and we need to update the same while updating then control inside updatepanel. Now, our requirement is to update the Label2 while we are updating Label1 by Clicking Button1.
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