Rebinding datasource when opening Dropdownlist

1 posts, 0 answers
  1. Shane
    Shane avatar
    6 posts
    Member since:
    Aug 2011

    Posted 28 Jun 2012 Link to this post

    I have a project where I have several (4)  linked, but not cascading DropDownLists.

    If a value is selected in DropDownList1 I want the available items in dropdown 2 ,3 and 4 to be changed

    If a value is selected for DropDownList2, the values for DropDownList3 and DropDownList4  will be different.

    Any  DropDownList can be selected without selecting a  DropDownList further up the hierarchy.

    I can get the initial values of the  DropDownLists loading correctly, however when a dropdown list is opened, I need to check the values of the other dropdowns to determine the values in the selected box.

    My question is:
    Can I rebind a dropdownlist (during the open event) to an updated datasource, and how is it best to trigger this datasource update with new data parameters from all of the relevant selected dropdownlists.?

    I have spent *some* time going through the forums and documentation , but cannot find anything really relevent to what I require.

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