update panel's partial post back not firing server side method

annapurna jonnalagadda

I have an update panel in which there is a place holder. I add rows of controls (radswitch) to the placeholder from code behind (denoting course list). Each time the radswitch is toggled, an associated server side method needs to be called. The code works up to this point. I added a term-selector RadComboBox item (denoting time frame such as semester and year) as a search filter to be passed on the back-end to filter the courses. This opened up a stubborn problem. Now the radswitch does not call its back-end method at all. It does postback but does not remember that it needs to call its associated method (RadSwitch_CheckedChanged).

radSwitch.CheckedChanged += new EventHandler(RadSwitch_CheckedChanged);Can someone help me with this issue? I have a spent a lot of time and am unable to understand what is going on?Appreciate your help! The front-end code is below

Course Filters

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annapurna jonnalagadda4y ago
Can you give more details please?
I have pageload method, termgen method (to generate the drop down list for the terms in the initial get request), termselector_selectedindexchanged method (each time user selects a value for a term, it generates a course list with associated rad switches) and RadSwitch_CheckedChanged method (when user clicks the radswitch on a specific course).
So, for the initial page load, only termgen is called. For the next partial postback when user selects a term, termselector_selectedindexchanged method is called. Once the courses are displayed on the page, when I click on the rad switch the whole dynamic course collection built is lost from the page. It does not remember to call its associated Radswitch_checkedchanged method. At what point do I again recreate the dynamic course collection?
Sachin Singh4y ago
As your other control is doing a postback, you'll need to make sure that the dynamic control is recreated on the page on every postback.