Page.DeterminePostBackMode Method (System.Web.UI)

DeterminePostBackMode Method

.NET Framework Class Library

Page..::.DeterminePostBackMode Method

Returns a NameValueCollection of data posted back to the page using either a POST or a GET command.

Namespace: System.Web.UI
Assembly: System.Web (in System.Web.dll)

Syntax

Visual Basic (Declaration)

Protected Friend Overridable Function DeterminePostBackMode As NameValueCollection

Visual Basic (Usage)

Dim returnValue As NameValueCollection

returnValue = Me.DeterminePostBackMode()

protected internal virtual NameValueCollection DeterminePostBackMode()

Visual C++

protected public:
virtual NameValueCollection^ DeterminePostBackMode()

JScript

protected internal function DeterminePostBackMode() : NameValueCollection

Return Value

Type: System.Collections.Specialized..::.NameValueCollection
A NameValueCollection object that contains the form data. If the postback used the POST command, the form information is returned from the Context object. If the postback used the GET command, the query string information is returned. If the page is being requested for the first time, nullNothingnullptra null reference (Nothing in Visual Basic) is returned.

Remarks

The DeterminePostBackMode method returns a NameValueCollection object that contains the data posted back to the page. The presence of the page hidden fields VIEWSTATE and EVENTTARGET is used to help determine whether a postback event has occurred. The IsPostBack property is set when the DeterminePostBackMode method is called.

Platforms

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.

Version Information

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

Reference

Page Class

Page Members

System.Web.UI Namespace

HttpContext

IsPostBack