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Page::RequiresControlState Method

Determines whether the specified Control object is registered to participate in control state management.

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

public:
bool RequiresControlState(
	Control^ control
)

Parameters

control
Type: System.Web.UI::Control

The Control to check for a control state requirement.

Return Value

Type: System::Boolean
true if the specified Control requires control state; otherwise, false

Control state is an object composed of critical view-state data that Web server controls need to function; it is contained in a separate object from normal view state.

Custom controls using control state must call the RegisterRequiresControlState method before saving control state. Use the RequiresControlState method to check for controls that are registered with the page as requiring control state.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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