Null hidden fields

TextBox but there are some special features in Html. Hidden that is listed below:. You created a form, and asked users to fill some information. In the behind, you also want to collect some user information and send those information to server when user click submit button. These information might be:. Which browser user is using 3. Security Token 5. Gathers information about the server control and delivers it to the Trace property to be displayed when tracing is enabled for the page.

Sets the cached ClientID value to null. Deletes the view-state and control-state information for all the server control's child controls. Called by the ASP. NET page framework to notify server controls that use composition-based implementation to create any child controls they contain in preparation for posting back or rendering. Creates an EmptyControlCollection object used to indicate that child controls are not allowed.

Binds a data source to the invoked server control and all its child controls with an option to raise the DataBinding event. Determines whether the server control contains child controls.

If it does not, it creates child controls. Searches the current naming container for a server control with the specified id parameter. Searches the current naming container for a server control with the specified id and an integer, specified in the pathOffset parameter, which aids in the search.

You should not override this version of the FindControl method. Gets the Type of the current instance. Returns the prefixed portion of the UniqueID property of the specified control. Restores control-state information from a previous page request that was saved by the SaveControlState method.

Processes postback data for a HiddenField control. Restores view-state information from a previous page request that was saved by the SaveViewState method. Creates a shallow copy of the current Object. Determines whether the event for the server control is passed up the page's UI server control hierarchy.

Raises the DataBinding event. Raises the Init event. Raises the Load event. Raises the PreRender event. Raises the Unload event. Raises the ValueChanged event. Gets a Stream used to read a file. Notifies the ASP. NET application that the state of the HiddenField control has changed. Called after a child control is removed from the Controls collection of the Control object. Renders the Web server control content to the client's browser using the specified HtmlTextWriter object.

Outputs the content of a server control's children to a provided HtmlTextWriter object, which writes the content to be rendered on the client. Outputs server control content to a provided HtmlTextWriter object and stores tracing information about the control if tracing is enabled.

Outputs server control content to a provided HtmlTextWriter object using a provided ControlAdapter object. Saves any server control state changes that have occurred since the time the page was posted back to the server. Saves any server control view-state changes that have occurred since the time the page was posted back to the server. Assigns an event handler delegate to render the server control and its content into its parent control.

Sets trace data for design-time tracing of rendering data, using the trace data key and the trace data value. Sets trace data for design-time tracing of rendering data, using the traced object, the trace data key, and the trace data value. Causes tracking of view-state changes to the server control so they can be stored in the server control's StateBag object.

This object is accessible through the ViewState property. Occurs when a server control is released from memory, which is the last stage of the server control lifecycle when an ASP.

NET page is requested. Occurs when the server control is loaded into the Page object. Occurs after the Control object is loaded but prior to rendering. Home Categories. Need Help? Our Support Team is here to help.

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