+TActiveImage is the active control counter part to TImage. TActiveImage displays an image on a page. The image is specified via the ImageUrl property which takes a relative or absolute URL to the image file. The alignment of the image displayed is set by the ImageAlign property. To set alternate text or long description of the image, use AlternateText or DescriptionUrl, respectively. +
+ ++TActiveImage allows the AlternateText, ImageAlign, ImageUrl +and DescriptionUrl to be updated during a callback request. +
++TActiveImageButton is the active counterpart of TImageButton. +When a TActiveImageButton is clicked, rather than a normal post back request a callback request is initiated. +TheOnCallback event is raised during a callback request and it is raised after the OnClick event. +
+ ++TActiveImageButton is similar to TActiveButton, except that TActiveImageButton displays the button as an image. The image is specified via ImageUrl, and the alternate text is specified by Text. In addition, it is possible to obtain the coordinate of the point where the image is clicked. The coordinate information is contained in the event parameter of the OnClick event (not OnCallback). +
++TActiveLabel is the active control counterpart of TLabel component. When +ActiveControl.EnableUpdate property is true during a callback request, setting Text +property will also set the text of the label on the client upon callback +completion. Similarly, setting ForControl will also set +the client-side "for" attribute on the label. +
+ ++TActiveLinkButton is the active control counter part to TLinkButton. +When a TActiveLinkButton is clicked, rather than a normal post back request a +callback request is initiated. +The OnCallback event is raised during a callback request +and it is raise after the OnClick event. +When the ActiveControl.EnableUpdate +property is true, changing the Text property during callback request +will update the link text upon callback response completion. +
+ ++TActiveMultiView is the active counterpart to the original TMultiView control. +TActiveMultiView serves as a container for a group of TView controls, which can be retrieved by the Views property. Each view contains child controls. TActiveMultiView determines which view and its child controls are visible. At any time, at most one view is visible (called active). To make a view active, set ActiveView or ActiveViewIndex. Note, by default there is no active view. +TActiveMultiView is able to render itself on Callback when ActiveView or ActiveViewIndex properties are changed. +
+ +
+
+TActivePanel is the TPanel active control counterpart.
+TActivePanel allows the client-side panel contents to be updated during a
+callback response using the render method.
+Example: Assume $param is an instance of TCallbackEventParameter attached to
+the OnCallback event of a TCallback with ID "callback1", and
+"panel1" is the ID of a TActivePanel.
+
+
+TActiveRadioButton is the active control counter part to TRadioButton. +The AutoPostBack property is set to true by default. Thus, when the radio button is clicked a +OnCallback event is raise after OnCheckedChanged event. +
+ ++The Text and Checked properties can be changed during a callback. +The GroupName property may NOT be changed during callback because the client-side +name attribute is read-only and can not be changed using javascript. +
+ ++TActiveTextBox is the active control counterpart of TTextBox component. +TActiveTextBox allows the Text property of the textbox to +be changed during callback. When AutoPostBack property +is true, changes to the textbox contents will perform a callback request causing +OnTextChanged to be fired first followed by OnCallback event. +
+| +ImageUrl being changed on callback request: + |
+ |
| +A click image button showing the click location: + |
+ |
| +A callback image button: + |
+ |
| +An image button causing validation: + |
+ |
| +An active label text being set as the result of a callback: + |
+ |
| +Upon button click, the textbox contents will be set on the label. Note that text needs to be properly escaped to avoid html injections: + |
+ |
| +Link button with only body content: + |
+ |
| +A click link button: + |
+ |
| +A callback link button: + |
+ |
| +A button causing validation: + |
+ |
Please enter a memo:
+Please choose a color:
+| +Active panel updated on callback: + |
+ a checkbox: a textbox: a label: +When you press the button, the panel contents will change. Note that out of the +panel and the button, all the other controls are not active but gets updated +anyway since they are placed inside the active panel. + |
| +A callback radiobutton: + |
+ |
| +A radiobutton causing validation on a textbox: + |
+ |
| +A radiobutton validated by a required field validator: + |
+ |
| +A radiobutton group: + |
+ + |
| +An active textbox being set as the result of a callback: + |
+ |
| +An active textbox with AutoPostBack="true"; Pressing Enter/Return, the textbox contents will be set on the label. +Note that text needs to be properly escaped to avoid html injections: + |
+ |