This API supports the .NET Framework infrastructure and is not intended to be used directly from your code.
Sets a value indicating whether the page is processed synchronously or asynchronously.
Protected Property AsyncMode As Boolean
<asp:Page AsyncMode="True|False" />
System .Boolean if the page is processed asynchronously; otherwise, true . false
property is set by the AsyncMode parser when code for the page is generated. Use the Page attribute in Async @ Page directive to set this value.
Asynchronous pages do not work when the
attribute is set to AspCompat or the true attribute is set to a value other than Transaction in the Disabled @ Page directive. .NET Framework
Supported in: 4, 3.5, 3.0, 2.0
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see
.NET Framework System Requirements.