UserControl::IsPostBack Property
Gets a value indicating whether the user control is being loaded in response to a client postback, or if it is being loaded and accessed for the first time.
Assembly: System.Web (in System.Web.dll)
Property Value
Type: System::Booleantrue if the user control is being loaded in response to a client postback; otherwise, false.
The following example adds two key value pairs to the application state associated with a user control if the user control's IsPostBack property returns false. When this condition is met, the code uses the Add method, through the user control's Application property, to add the keys and their values.
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.