[Solved] Asynchronous operations are not allowed in this context [duplicate]
[ad_1] Page starting an asynchronous operation has to have the Async attribute set to true and an asynchronous operation can only be started on a page prior to PreRenderComplete event. Have you set the Page.Async attribute to true, and are you starting the asynchronous operation before the PreRenderComplete event? In general, you should avoid async … Read more