FileWidget Class

Initializes a new instance of the FileWidget class

Gets/sets the types of files that the server accepts (that can be submitted through a file upload). This value is used to set the HTML input ACCEPT attribute on the File subcontrol. See http://www.w3schools.com/tags/att_input_accept.asp for more information on ACCEPT. Note that ACCEPT is now supported by most recent browsers. It appears that the most recent widely-used browser the DOES NOT support ACCEPT is Internet Explorer 9.

Gets or sets the access key that allows you to quickly navigate to the Web server control.

Gets the browser-specific adapter for the control.

Gets/sets whether or not the BndLkup button should be in the page tab order (that is, whether or not it should allow the user to tab to the button to give it focus). The default value is true.

The alternate text to display for the control's button portion.

Gets/sets whether the control width should be applied to the TextBox only (vs. the entire control). By default the control width is applied to the entire control (including icon buttons), but when this option is set, the width is applied to the TextBox only allowing the icon buttons to extend beyond the specified width. This setting is used to size the TextBox in BndLkup controls to match other non-BndLkup controls (rather than sizing the entire BndLkup to match).

Gets or sets the application-relative virtual directory of the Page or UserControl object that contains this control.

Gets the collection of arbitrary attributes (for rendering only) that do not correspond to properties on the control.

Gets or sets the background color of the Web server control.

Gets the control that contains this control's data binding.

Gets or sets the border color of the Web control.

Gets or sets the border style of the Web server control.

Gets or sets the border width of the Web server control.

Gets the control's main action Button.

Gets the control's button control. The type of control used as the IBndLkup's button will vary according to the control implementing the interface. Use OnClientClick to get/set the javascript onclick handler for the button.

Gets/sets whether the button is to be placed to the left of the textbox.

Gets a value that indicates whether the server control's child controls have been created.

Gets the control's Clear button.

Gets the control's clear button control. The type of control used as the IBndLkup's clear button will vary according to the control implementing the interface. Use OnClearButtonClientClick to get/set the javascript onclick handler for the button.

Gets/sets whether the ClearButton should be forced to be hidden rather than leaving the decision up to the control based on the lock state of its constituent elements.

Gets/sets whether the control's ClearButton should be forced to be shown rather than leaving the decision up to the control based on the lock state of its constituent elements. See also ClearButtonHide.

Gets the control ID for HTML markup that is generated by ASP.NET.

Gets or sets the algorithm that is used to generate the value of the ClientID property.

Gets a character value representing the separator character used in the ClientID property.

The name of the command

Gets the HttpContext object associated with the server control for the current Web request.

Gets a ControlCollection object that represents the child controls for a specified server control in the UI hierarchy.

Gets the style of the Web server control. This property is used primarily by control developers.

Gets a value indicating whether a Style object has been created for the ControlStyle property. This property is primarily used by control developers.

Gets or sets the Cascading Style Sheet (CSS) class rendered by the Web server control on the client.

Gets a reference to the naming container if the naming container implements IDataItemContainer.

Gets a reference to the naming container if the naming container implements IDataKeysControl.

Gets a value indicating whether a control is being used on a design surface.

Gets or sets a value indicating whether the Web server control is enabled.

Gets or sets a value indicating whether themes apply to this control.

Gets or sets a value indicating whether the server control persists its view state, and the view state of any child controls it contains, to the requesting client.

Gets a list of event handler delegates for the control. This property is read-only.

Gets the control's ImageButton.

The ClientID of the control used to hold the true filename when this widget is used to show the "pretty" name. If this value is null or blank then it is assumed that there is no dedicated control for the "pretty" name and so only the true filename is captured.

Specifies whether or not to render the TextBox with a fixed size when locked vs. unlocked. Normal rendering increases the width of the textbox to occupy the entire control space with the widget icon and clear icon are not presented. When this option is set, the TextBox is always rendered the same size even when the widget icon and clear icon are not rendered.

Gets the font properties associated with the Web server control.

Gets or sets the foreground color (typically the color of the text) of the Web server control.

Gets a value indicating whether the control has attributes set.

Gets a value indicating whether the current server control's child controls have any saved view-state settings.

Gets or sets the height of the Web server control.

The height of the icon, in pixels. Note that the default is 16.

The width of the icon, in pixels. Note that the default is 16.

Gets or sets the programmatic identifier assigned to the server control.

Gets the character used to separate control identifiers.

Gets/sets the control's image.

The URL of the image to use for the button portion of the control.

Determine if the control is being rendered in the .Net Studio. Currently we assume this is the case if, and only if, there is not HttpContext.

Gets a value indicating whether controls contained within this control have control state.

Gets a value indicating whether the control is enabled.

Gets a value that indicates whether the server control is saving changes to its view state.

Gets a value indicating whether view state is enabled for this control.

LiveLook is not supported by the FileWidget because it uses a transparent HtmlInputFile overlay.

Gets a value indicating whether the control participates in loading its view state by ID instead of index.

Gets/sets the error message to display to the user if the user attempts to upload a file whose size exceeds the limit specified by MaxFileKB. See MaxFileKB for more information.

Gets/sets the maximum file size that a user should be allowed to upload. The size is specified in KB (1024 bytes) units, so, for example, 10 means 10240 bytes. Generally you should also set MaxFileErrorMessage if you set MaxFileKB. See http://www.w3schools.com/jsref/prop_fileupload_files.asp for more information on how this is applied during client-side validation. Note that client-side validation for this setting can be performed on more recent browsers as they expose the file size for user-selected upload files. It appears that the most recent widely-used browser the DOES NOT support this is Internet Explorer 9.

Gets a reference to the server control's naming container, which creates a unique namespace for differentiating between server controls with the same ID property value.

The URL to which to navigate. If a NavigateURL is specified, Text is provided, the lookup button is locked and the textbox is readonly, then a hyperlink will be rendered using this URL.

Gets/sets wether the control's ButtonControl should be locked automatically when the control is locked.

Specifies whether or not the filename extension should be included in the "pretty" name (if there is a "pretty" name).

Gets/sets the javascript onclick handler for the control's clear button, ClearButtonControl.

Gets/sets the javascript onclick handler for the control's button.

Gets a reference to the Page instance that contains the server control.

Gets a reference to the server control's parent control in the page control hierarchy.

Gets/sets the locked status of the control's TextBox.

Gets a value that specifies the ASP.NET version that rendered HTML will be compatible with.

Gets/sets text for the button that can be read by ScreenReaders, but is not visible in the browser. Renders using the Bootstrap sr-only class or as an aria-label attribute. See https://danielnixon.org/bootstraps-bad-glyphicon-example/ for a discussion of using image-based buttons with assistive technology.

Gets/sets whether or not this control is being used for secure data. When used for secure data, a Password control is used internally instead of a TextBox.

Gets/sets whether the lookup button and clear button should be shown even when locked. Normally BndLkup buttons are hidden when locked, however, if the locked/unlocked state of the control is going to be toggled in script then it is generally better to show the buttons even when locked.

Gets information about the container that hosts the current control when rendered on a design surface.

Gets or sets the skin to apply to the control.

Gets a collection of text attributes that will be rendered as a style attribute on the outer tag of the Web server control.

Gets a value that indicates whether the control should set the disabled attribute of the rendered HTML element to "disabled" when the control's IsEnabled property is false.

Gets or sets the tab index of the Web server control.

Gets the HtmlTextWriterTag value that corresponds to this Web server control. This property is used primarily by control developers.

Gets the name of the control tag. This property is used primarily by control developers.

When rendered as a link to a related item, this is the link's target window or frame.

Gets or sets a reference to the template that contains this control.

Gets the virtual directory of the Page or UserControl that contains the current server control.

Gets or sets the control's text.

Gets the control's TextBox

Gets or sets the text displayed when the mouse pointer hovers over the Web server control.

Gets the unique, hierarchically qualified identifier for the server control.

The control's UniqueID for the purpose of validating the TextBox value.

Gets/sets whether or a Screen Reader for the visually impaired is being used. [3/6/09 CW]

The control's ID for the purpose of validating the TextBox value.

Gets a dictionary of state information that allows you to save and restore the view state of a server control across multiple requests for the same page.

Gets a value that indicates whether the StateBag object is case-insensitive.

Gets or sets the view-state mode of this control.

Gets or sets a value that indicates whether a server control is rendered as UI on the page.

Gets or sets the width of the Web server control.

Adds HTML attributes and styles that need to be rendered to the specified HtmlTextWriterTag. This method is used primarily by control developers.

Called after a child control is added to the Controls collection of the Control object.

Notifies the server control that an element, either XML or HTML, was parsed, and adds the element to the server control's ControlCollection object.

Copies any nonblank elements of the specified style to the Web control, overwriting any existing style elements of the control. This method is primarily used by control developers.

Applies the style properties defined in the page style sheet to the control.

Call through to the base control renderer.

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 control-state information for the server control's child controls.

Deletes the view-state and control-state information for all the server control's child controls.

Deletes the view-state information for all the server control's child controls.

Sets the ClientIDMode property of the current control instance and of any child controls to Inherit.

Called during Render() and provided for the derived class to override instead of the derived class overriding Render(). The CompositeControlBase implementation is empty. The derived class should override this method and implement its Render() in the override.

Write the specified attribute from the control's Attribute collection. The purpose of this is to allow derived composites to move copy attributes from the composite control to one or more of the contained controls.

Write the specified attribute from the control's Attribute collection. The purpose of this is to allow derived composites to move copy attributes from the composite control to one or more of the contained controls.

Copies the properties not encapsulated by the Style object from the specified Web server control to the Web server control that this method is called from. This method is used primarily by control developers.

Write the specified style element from the control's Style collection. The purpose of this is to allow derived composites to move copy attributes from the composite control to one or more of the contained controls.

Copy the specified style element from this control's Style collection to the specified control's Style collection. The purpose of this is to allow derived composites to move copy elements from the composite control to one or more of the contained controls.

Let the base class create its child controls then add a file control and set it up.

Creates a new ControlCollection object to hold the child controls (both literal and server) of the server control.

Creates the style object that is used internally by the WebControl class to implement all style related properties. This method is used primarily by control developers.

Binds a data source to the invoked server control and all its child controls.

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

Binds a data source to the server control's child controls.

Enables a server control to perform final clean up before it is released from memory.

Determines whether the server control contains child controls. If it does not, it creates child controls.

Creates an identifier for controls that do not have an identifier assigned.

Determines whether the specified Object is equal to the current Object.

Allows an Object to attempt to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection.

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.

Sets input focus to a control.

Gets design-time data for a control.

Serves as a hash function for a particular type.

Gets the URL that corresponds to a set of route parameters.

Gets the URL that corresponds to a set of route parameters.

Gets the URL that corresponds to a set of route parameters and a route name.

Gets the URL that corresponds to a set of route parameters and a route name.

Gets the Type of the current instance.

Returns the prefixed portion of the UniqueID property of the specified control.

Determines if the server control contains any child controls.

Returns a value indicating whether events are registered for the control or any child controls.

Determine if the requesting browser is AppleWebKit-based (presumably Safari).

Determine if the requesting browser is InternetExplorer.

Determines if the server control holds only literal content.

Determine if the requesting browser is Opera.

Restores control-state information from a previous page request that was saved by the SaveControlState method.

Restores view-state information from a previous request that was saved with the SaveViewState method.

Retrieves the physical path that a virtual path, either absolute or relative, maps to.

Creates a shallow copy of the current Object.

Copies any nonblank elements of the specified style to the Web control, but will not overwrite any existing style elements of the control. This method is used primarily by control developers.

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.

Gets a Stream used to read a file.

Assigns any sources of the event and its information to the control's parent.

Called after a child control is removed from the Controls collection of the Control object.

Renders the control to the specified HTML writer.

Renders the HTML opening tag of the control to the specified writer. This method is used primarily by control developers.

Outputs the content of a server control's children to a provided HtmlTextWriter object, which writes the content to be rendered on the client.

Renders the contents of the control to the specified writer. This method is used primarily by control developers.

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.

Renders the HTML closing tag of the control into the specified writer. This method is used primarily by control developers.

Gets the control adapter responsible for rendering the specified control.

Gets a URL that can be used by the browser.

Converts a URL into one that is usable on the requesting client.

Saves any server control state changes that have occurred since the time the page was posted back to the server.

Saves any state that was modified after the TrackViewState method was invoked.

Sets design-time data for a control.

Sets the image for the control allowing for either an image file URL or a Bootstrap glyph.

Assigns an event handler delegate to render the server control and its content into its parent control.

Returns a String that represents the current Object.

Causes the control to track changes to its view state so they can be stored in the object's ViewState property.

Notifies the server that the control's button has been clicked.

Occurs when the server control binds to a data source.

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 initialized, which is the first step in its lifecycle.

Occurs when the server control is loaded into the Page object.

Occurs after the Control object is loaded but prior to rendering.

Occurs when the server control is unloaded from memory.

The text to use for the ALT attribute.

The BndLkup Button.

A button for clearing the content.

The containing table for the BndLkup.

The BndLkup TextBox.

Determines if the object value is equal to another object. If the two objects are null, then this returns true. There is special handling for guid comparisons (since a guid could be a string formatted in up to 3 different ways). If the special guid handling is not performed, then the object.Equals method is used.

Recursively search the control hierarchy for the specified control and below for a control with the specified ID and return that control, if found. If not found, null is returned.

Determines whether or not the control has any visible controls in its controls collection.

Replace this control in its parent's Controls collection, with the specified replacement. If either control is null, no replacement is performed.