If you want to choose which AccodionPane is selected, you generally use the SelectedIndex command. However, if you want to select which AccordionPane is active by its ID and when you binded your data to your ajax accordion you set the ID of each AccordionPane you can use the below code: This example is based

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As you know when you use the accordion element of the Ajax Toolkit, one of the panes is automatically open on load. Well there is a way around this, simply add the below to your page loading sub: MyAccordion.selectedindex = "-1" An example of this in place would be: Private Sub Page_Load() If Not Page.IsPostBack

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