Страница выполняет асинхронный повторный вызов, однако свойство ScriptManager.SupportsPartialRendering имеет значение false. Убедитесь, что свойство имеет значение true во время асинхронного повторного вызова.

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The page is performing an async postback but the ScriptManager.SupportsPartialRendering property is set to false. Ensure that the property is set to true during an async postback.

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