RegisterHiddenField Method (control, hiddenFieldName, hiddenFieldInitialValue)

Syntax

public static void RegisterHiddenField (
	Control control,
	string hiddenFieldName,
	string hiddenFieldInitialValue
)

Public Shared Sub RegisterHiddenField ( _
	control As Control, _
	hiddenFieldName As String, _
	hiddenFieldInitialValue As String _
)

public:
static void RegisterHiddenField (
	Control^ control, 
	String^ hiddenFieldName, 
	String^ hiddenFieldInitialValue
)

public static void RegisterHiddenField (
	Control control,
	String hiddenFieldName,
	String hiddenFieldInitialValue
)

Parameters

control (Control)

The control that is registering the hidden field.

hiddenFieldName (String)

The name of the hidden field to register.

hiddenFieldInitialValue (String)

The initial value of the hidden field to register.

Remarks

The RegisterHiddenField method is used to register a hidden field that is compatible with partial-page rendering and that has no Microsoft AJAX Library dependencies. This method registers the hidden field when the control that is registering the field is inside an UpdatePanel control that is updated. To register a hidden field each time an asynchronous postback occurs, use the RegisterHiddenField(Page, String, String) overload of this method. If you are registering a hidden field that does not pertain to partial-page updates and you want to register an array only one time during initial page rendering, use the RegisterHiddenField(String, String) method of the ClientScriptManager class. You can get a reference to the ClientScriptManager object from the ClientScript property of the page.

The RegisterHiddenField method creates a hidden <input> element on the rendered HTML page.

Exceptions

Assembly: System.Web.Extensions (Module: System.Web.Extensions)