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Packages: default System System.Caching System.Collections System.Data System.Data.ActiveRecord System.Data.ActiveRecord.Relations System.Data.ActiveRecord.Scaffold System.Data.ActiveReecord.Scaffold.InputBuilder System.Data.Commom.Sqlite System.Data.Common System.Data.Common.Mssql System.Data.Common.Mysql System.Data.Common.Oracle System.Data.Common.Pgsql System.Data.Common.Sqlite System.Data.DataGateway System.Data.SqlMap System.Data.SqlMap.Configuration System.Data.SqlMap.Statements System.Exceptions System.I18N System.IO System.Security System.Util System.Web System.Web.Services System.Web.UI System.Web.UI.ActiveControls System.Web.UI.WebControls System.Web.UI.WebControls.assets System.Xml Classes: IDataSource IItemDataRenderer IRepeatInfoUser TActiveFileUpload TBaseDataList TBaseValidator TBoundColumn TBulletedList TBulletedListDisplayMode TBulletedListEventParameter TBulletStyle TButton TButtonColumn TButtonColumnType TButtonType TCaptcha TCaptchaValidator TCheckBox TCheckBoxColumn TCheckBoxList TCircleHotSpot TClientScript TClientScriptLoader TClientSideValidationSummaryOptions TColorPicker TColorPickerClientSide TColorPickerMode TCompareValidator TCompleteWizardStep TConditional TContent TContentDirection TContentPlaceHolder TCustomValidator TDataBoundControl TDataGrid TDataGridColumn TDataGridColumnCollection TDataGridCommandEventParameter TDataGridItem TDataGridItemCollection TDataGridItemEventParameter TDataGridItemRenderer TDataGridPageChangedEventParameter TDataGridPager TDataGridPagerButtonType TDataGridPagerEventParameter TDataGridPagerMode TDataGridPagerPosition TDataGridPagerStyle TDataGridSortCommandEventParameter TDataList TDataListCommandEventParameter TDataListItem TDataListItemCollection TDataListItemEventParameter TDataListItemRenderer TDataRenderer TDataSourceControl TDataSourceSelectParameters TDataSourceView TDataTypeValidator TDatePicker TDatePickerClientScript TDatePickerInputMode TDatePickerMode TDatePickerPositionMode TDisplayStyle TDraggable TDropContainer TDropDownList TDropDownListColumn TEditCommandColumn TEmailAddressValidator TExpression TFileUpload TFont THiddenField THorizontalAlign THotSpot THotSpotCollection THotSpotMode THtmlArea THtmlElement THyperLink THyperLinkColumn TImage TImageButton TImageClickEventParameter TImageMap TImageMapEventParameter TInlineFrame TInlineFrameAlign TInlineFrameScrollBars TItemDataRenderer TJavascriptLogger TKeyboard TLabel TLinkButton TListBox TListControl TListControlValidator TListItem TListItemCollection TListItemType TListSelectionMode TLiteral TLiteralColumn TMarkdown TMetaTag TMetaTagCollection TMultiView TOutputCache TOutputCacheCalculateKeyEventParameter TOutputCacheCheckDependencyEventParameter TPager TPagerButtonType TPagerMode TPagerPageChangedEventParameter TPanel TPanelStyle TPlaceHolder TPolygonHotSpot TRadioButton TRadioButtonList TRangeValidationDataType TRangeValidator TRatingList TReadOnlyDataSource TReadOnlyDataSourceView TRectangleHotSpot TRegularExpressionValidator TRepeatDirection TRepeater TRepeaterCommandEventParameter TRepeaterItem TRepeaterItemCollection TRepeaterItemEventParameter TRepeaterItemRenderer TRepeatInfo TRepeatLayout TRequiredFieldValidator TSafeHtml TScrollBars TServerValidateEventParameter TSlider TSliderClientScript TSliderDirection TStatements TStyle TStyleSheet TTable TTableCaptionAlign TTableCell TTableCellCollection TTableFooterRow TTableGridLines TTableHeaderCell TTableHeaderRow TTableHeaderScope TTableItemStyle TTableRow TTableRowCollection TTableRowSection TTableStyle TTabPanel TTabView TTabViewCollection TTemplateColumn TTemplatedWizardStep TTextAlign TTextBox TTextBoxAutoCompleteType TTextBoxMode TTextHighlighter TTextHighlighterLineNumberStyle TValidationCompareOperator TValidationDataType TValidationSummary TValidationSummaryDisplayMode TValidationSummaryDisplayStyle TValidatorClientSide TValidatorDisplayStyle TVerticalAlign TView TViewCollection TWebControl TWebControlAdapter TWizard TWizardFinishNavigationTemplate TWizardNavigationButtonStyle TWizardNavigationButtonType TWizardNavigationContainer TWizardNavigationEventParameter TWizardNavigationTemplate TWizardSideBarListItemTemplate TWizardSideBarTemplate TWizardStartNavigationTemplate TWizardStep TWizardStepCollection TWizardStepNavigationTemplate TWizardStepType TXmlTransform |
Keyword
# Class THiddenField
    TComponent
       |
       --TApplicationComponent
          |
          --TControl
             |
             --THiddenField
#### Direct Known Sub-classes: TActiveHiddenField THiddenField class THiddenField displays a hidden input field on a Web page. The value of the input field can be accessed via Value property. If upon postback the value is changed, a OnValueChanged event will be raised. Since: 3.0 Author: Qiang Xue <qiang.xue@gmail.com>
Constants Inherited From TControl
AUTOMATIC_ID_PREFIX, CLIENT_ID_SEPARATOR, CS_CHILD_INITIALIZED, CS_CONSTRUCTED, CS_INITIALIZED, CS_LOADED, CS_PRERENDERED, CS_STATE_LOADED, ID_FORMAT, ID_SEPARATOR, IS_CHILD_CREATED, IS_CREATING_CHILD, IS_DISABLE_THEMING, IS_DISABLE_VIEWSTATE, IS_ID_SET, IS_SKIN_APPLIED, IS_STYLESHEET_APPLIED, RF_ADAPTER, RF_AUTO_BINDINGS, RF_CHILD_STATE, RF_CONTROLS, RF_CONTROLSTATE, RF_DATA_BINDINGS, RF_EVENTS, RF_NAMED_CONTROLS, RF_NAMED_CONTROLS_ID, RF_NAMED_OBJECTS, RF_SKIN_ID,
Method Summary
void | focus () Sets focus to this control.
string | getData () Returns the value of the hidden field.
boolean | getDataChanged () Returns a value indicating whether postback has caused the control data change.
boolean | getEnableTheming ()
bool | getIsValid () Returns true if this control validated successfully.
protected string | getTagName ()
mixed | getValidationPropertyValue () Returns the value to be validated.
string | getValue ()
boolean | loadPostData ( string $key, array $values) Loads hidden field data.
void | onValueChanged ( TEventParameter $param) This method is invoked when the value of the getValue property changes between posts to the server.
void | raisePostDataChangedEvent () Raises postdata changed event.
void | render ( THtmlWriter $writer) Renders the control.
void | setData ( string $value) Sets the value of the hidden field.
void | setEnableTheming ( boolean $value)
void | setIsValid ( bool $value)
void | setSkinID ( string $value)
void | setValue ( string $value) Sets the value of the THiddenField
Methods Inherited From TControl
TControl::addedControl(), TControl::addParsedObject(), TControl::addToPostDataLoader(), TControl::applyStyleSheetSkin(), TControl::autoBindProperty(), TControl::autoDataBindProperties(), TControl::bindProperty(), TControl::broadcastEvent(), TControl::bubbleEvent(), TControl::clearChildState(), TControl::clearControlState(), TControl::clearNamingContainer(), TControl::clearViewState(), TControl::convertUniqueIdToClientId(), TControl::createChildControls(), TControl::createControlCollection(), TControl::dataBind(), TControl::dataBindChildren(), TControl::dataBindProperties(), TControl::ensureChildControls(), TControl::findControl(), TControl::findControlsByID(), TControl::findControlsByType(), TControl::focus(), TControl::getAdapter(), TControl::getAllowChildControls(), TControl::getAttribute(), TControl::getAttributes(), TControl::getChildControlsCreated(), TControl::getClientID(), TControl::getControls(), TControl::getControlStage(), TControl::getControlState(), TControl::getCustomData(), TControl::getEnabled(), TControl::getEnableTheming(), TControl::getEnableViewState(), TControl::getHasAdapter(), TControl::getHasAttributes(), TControl::getHasChildInitialized(), TControl::getHasControls(), TControl::getHasInitialized(), TControl::getHasLoaded(), TControl::getHasLoadedPostData(), TControl::getHasPreRendered(), TControl::getID(), TControl::getNamingContainer(), TControl::getPage(), TControl::getParent(), TControl::getRegisteredObject(), TControl::getSkinID(), TControl::getSourceTemplateControl(), TControl::getTemplateControl(), TControl::getUniqueID(), TControl::getViewState(), TControl::getVisible(), TControl::hasAttribute(), TControl::initRecursive(), TControl::isDescendentOf(), TControl::isObjectRegistered(), TControl::loadRecursive(), TControl::loadState(), TControl::loadStateRecursive(), TControl::onDataBinding(), TControl::onInit(), TControl::onLoad(), TControl::onPreRender(), TControl::onUnload(), TControl::preRenderRecursive(), TControl::raiseBubbleEvent(), TControl::registerObject(), TControl::removeAttribute(), TControl::removedControl(), TControl::render(), TControl::renderChildren(), TControl::renderControl(), TControl::saveState(), TControl::saveStateRecursive(), TControl::setAdapter(), TControl::setAttribute(), TControl::setChildControlsCreated(), TControl::setControlStage(), TControl::setControlState(), TControl::setCustomData(), TControl::setEnabled(), TControl::setEnableTheming(), TControl::setEnableViewState(), TControl::setID(), TControl::setPage(), TControl::setSkinID(), TControl::setTemplateControl(), TControl::setViewState(), TControl::setVisible(), TControl::trackViewState(), TControl::traverseChildControls(), TControl::unbindProperty(), TControl::unloadRecursive(), TControl::unregisterObject(), TControl::__get()
Methods Inherited From TApplicationComponent
TApplicationComponent::getApplication(), TApplicationComponent::getRequest(), TApplicationComponent::getResponse(), TApplicationComponent::getService(), TApplicationComponent::getSession(), TApplicationComponent::getUser(), TApplicationComponent::publishAsset(), TApplicationComponent::publishFilePath()
Methods Inherited From TComponent
TComponent::addParsedObject(), TComponent::attachEventHandler(), TComponent::canGetProperty(), TComponent::canSetProperty(), TComponent::createdOnTemplate(), TComponent::detachEventHandler(), TComponent::evaluateExpression(), TComponent::evaluateStatements(), TComponent::getEventHandlers(), TComponent::getSubProperty(), TComponent::hasEvent(), TComponent::hasEventHandler(), TComponent::hasProperty(), TComponent::raiseEvent(), TComponent::setSubProperty(), TComponent::__get(), TComponent::__set()
Constant Summary
Method Details
## focus
public void focus | ()
Sets focus to this control. This method overrides the parent implementation by forbidding setting focus to this control.
Output
Exception
## getData
public string getData | ()
Returns the value of the hidden field. This method is required by IDataRenderer. It is the same as getValue().
Output
string | value of the hidden field
Exception
## getDataChanged
public boolean getDataChanged | ()
Returns a value indicating whether postback has caused the control data change. This method is required by the IPostBackDataHandler interface.
Output
boolean | whether postback has caused the control data change. False if the page is not in postback mode.
Exception
## getEnableTheming
public boolean getEnableTheming | ()
Output
boolean | whether theming is enabled for this control. Defaults to false.
Exception
## getIsValid
public bool getIsValid | ()
Returns true if this control validated successfully. Defaults to true.
Output
bool | wether this control validated successfully.
Exception
## getTagName
protected string getTagName | ()
Output
string | tag name of the hidden field.
Exception
## getValidationPropertyValue
public mixed getValidationPropertyValue | ()
Returns the value to be validated. This methid is required by IValidatable interface.
Output
mixed | the value of the property to be validated.
Exception
## getValue
public string getValue | ()
Output
string | the value of the THiddenField
Exception
## loadPostData
public boolean loadPostData | (string $key , array $values )
Loads hidden field data. This method is primarly used by framework developers.
Input
string | $key | the key that can be used to retrieve data from the input data collection
array | $values | the input data collection
Output
boolean | whether the data of the component has been changed
Exception
## onValueChanged
public void onValueChanged | (TEventParameter $param )
This method is invoked when the value of the getValue property changes between posts to the server. The method raises 'OnValueChanged' event to fire up the event delegates. If you override this method, be sure to call the parent implementation so that the attached event handlers can be invoked.
Input
TEventParameter | $param | event parameter to be passed to the event handlers
Output
Exception
## raisePostDataChangedEvent
public void raisePostDataChangedEvent | ()
Raises postdata changed event. This method calls onValueChanged method. This method is primarly used by framework developers.
Output
Exception
## render
public void render | (THtmlWriter $writer )
Renders the control. This method overrides the parent implementation by rendering the hidden field input element.
Input
THtmlWriter | $writer | the writer used for the rendering purpose
Output
Exception
## setData
public void setData | (string $value )
Sets the value of the hidden field. This method is required by IDataRenderer. It is the same as setValue().
Input
string | $value | value of the hidden field
Output
Exception
## setEnableTheming
public void setEnableTheming | (boolean $value )
Input
boolean | $value | whether theming is enabled for this control.
Output
Exception
throws | TNotSupportedException This method is always thrown when calling this method.
## setIsValid
public void setIsValid | (bool $value )
Input
bool | $value | wether this control is valid.
Output
Exception
## setSkinID
public void setSkinID | (string $value )
Input
string | $value | Skin ID
Output
Exception
throws | TNotSupportedException This method is always thrown when calling this method.
## setValue
public void setValue | (string $value )
Sets the value of the THiddenField
Input
string | $value | the value to be set
Output
Exception