You can handle the OnClientItemsRequestingFailed
client-side event of the RadComboBox, in order to capture the error if there is any. If the issue originates from the fact that not data is returned, you can use the OnItemRequested
. However, in both cases you can use the requestItems
method of the RadComboBox to re-initiate a request to the WebService.
Regarding the requestItems
method and other important client-side methods of the RadComboBox, you can refer to the following documentation article :
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