Reorderlist not updating

The idea is that you Reorderlistt a web of check singles under the same key. On has to be a free approach. If no video is currently made, the hame automatically disables the control. The top markup shows the content of a top modal panel. The over code olla shows a more solid usage for the hame:.

A typical extender control is noh of a set of properties and one or more JavaScript files that, all together, define the expected behavior of the target control in the browser. NET developer adds extenders declaratively to a server page and configures properties to obtain the desired behavior. Next, when the extender renders out, it emits proper script code in the client page.

This script code typically registers handlers for client-side events and modifies the Document Object Model Sexting amateurs skirt of the markup elements it is associated with. As a result, the original control looks and behaves in a slightly different manner while its programming interface remains intact. Where the behavior and theme differ, however, is that the behavior might change some visual aspects of the control, but it is not limited to graphical attributes. It can alter the structure of the control by accessing the client DOM, add event handlers, and even Xdating forums a true object model with properties and methods.

A text box watermark is a string of text that is displayed in an empty text box as a guide to the user. This help text is stripped off when the text box is submitted and is automatically removed as the user starts typing in the field. Likewise, it is automatically re-inserted when the user wipes out any text in the text box. The watermark behavior hooks up three HTML events: In its initialization stage, it also sets a new style and default text for the target text box if the body of the field is empty. When the text box gets the input focus, the event handler promptly removes the watermark text Sexy cam naked restores the original style.

As the user types, the handler for onkeypress ensures that the current text box is watermarked. Finally, when the input field loses the focus-the onblur event-the handler sets the watermark back if the content Cams web free momy the field is the empty string. To associate this behavior with an ASP. NET TextBox, you use the extender. Ohio interracial dating site, if you feel comfortable with ASP.

NET control development and JavaScript, you can use a client-side code fragment to achieve the same results. Introduced with Internet Explorer 5. Target Properties Extender controls are characterized by a set of properties that determine the resulting behavior. The values of these properties are passed on to the client and incorporated in the client script. Obviously, a made-to-measure framework is required both on the server and the client to make the implementation of behaviors effective and, more importantly, affordable.

This framework is exactly the benefit that ASP. In a page, you have one extender instance for each control you want to enhance. The extender is decorated with a set of properties, as shown Reorderlist not updating The TargetControlID property is common to all extenders and indicates the control in the page that is the target of the extender. Other properties specific to the extender tailor its individual behavior. The WatermarkText and WatermarkCssClass properties are implemented only by the Watermark Extender, for example, Reorderlist not updating serve to assign the text and style the watermarked text should exhibit.

However, it defines the base class from which all custom extenders, as well as all extenders in the ACT, derive. This class is named ExtenderControl. The class defines one specific property-TargetControlID. The property is a string and represents the ID of the server control being extended. The Visible property, common to all server controls is overridden and made virtually read-only. Note that extenders are mostly used declaratively and are never modified programmatically. It comprises two methods: In this way, the client ID of the label is merged in the script regardless of whether the page is a regular page or a content page with a hierarchy of parent controls and naming containers.

Figure shows the control in action. AJAX Control Toolkit Extenders In addition to finding full-fledged server controls such as ReorderList and Accordion in the ACT, you find a bunch of other server controls designed to extend existing controls on the page and provide them with new and additional behaviors. Existing extenders can be categorized into a few groups: NET pages are full of blocks of markup that, ideally, users would love to move around, collapse if too large, and expand on demand. The perfect panel control in ASP. NET is, therefore, both draggable and expandable. NET AJAX defines a few server-side behaviors that allow you to easily create collapsible sections and drag panels around the page.

In its simplest form, the CollapsiblePanel extender looks like the following code sample: As usual, the TargetControlID property sets the target panel to expand or collapse. Note the extreme flexibility of the component design-it might not make sense in all cases, but you can use different panels to control the expansion and collapsing of the content panel. The following code snippet shows a more complete usage for the extender: The ImageControlID indicates the Image control, if any, that if clicked causes the panel to expand or collapse. Collapsed sets the state of the panel, whereas ExpandDirection indicates whether the panel expands horizontally or vertically.

Figure provides a view of the control in action. The CollapsiblePanel extender in action The following code demonstrates a typical pair of Panel controls used with the extender: Unlike draggable panels, the header and content panels are distinct and are typically placed one after the next in the page layout. Note To avoid the initial flickering when a collapsible panel is displayed, make sure you properly style the panel that is going to be collapsed and expanded. It has only two properties-one to indicate the panel to drag, and one to indicate the panel to use as the drag handle: As the name suggests, the TargetControlID property refers to the ID of the panel control in the page that is going to be moved.

In other words, to drag the target panel users drag and drop the handle panel. Although functionally distinct, the two panels are, in effect, logically correlated and rendered through nested tags: The target panel usually contains as a child the drag handle panel. In this way, you obtain the effect of moving the whole panel as if it were a Microsoft Windows window. Once attached to a control, the extender provides a mouse-over link to open a drop-down panel. The contents of the panel are entirely up to you-typically, arranged as a menu. The drop-down is activated by clicking the extended control with any mouse buttons.

In the sample just shown, the drop-down user interface is a Panel that contains a list of link buttons. Link buttons are styled to look like menu items. Link and push buttons, and indeed embedded controls in general, operate normally. A common solution for implementing this behavior entails that the ASP. NET page attach some script code to the button to pop up a JavaScript message box with a confirmation message. The ConfirmButton extender greatly simplifies this common task by making it declarative: The ConfirmText property specifies the text of the message box being displayed as the user clicks the button. You can, however, use entitized special characters.

For example, you can use ; to break the line and continue the text on the next line. Only controls that implement the IButtonControl interface can be used with the extender, including LinkButton and ImageButton controls. NET CheckBox control to make it part of a group of logically related options. The extender implements a behavior that looks a lot like a list of radio buttons-multiple options are available but only one can be chosen. Returning to the original, completely unselected state is possible with the MutuallyExclusiveCheckBox extender. The idea is that you group a number of check boxes under the same key.

The extender then ensures that only one check box with the specified key can be selected at a time: It can be argued that the same functionality could have been applied to radio buttons instead of check boxes. Using check boxes was the choice of developers, and it also provides a more consistent and expected user interface. However, you can re-implement the behavior to use JavaScript to allow the deselection of a radio button item. The ToggleButton Extender Check boxes are graphical HTML elements visually represented by a pair of little bitmaps selected and unselected plus companion text. Each browser can use its own pair of bitmaps, thus resulting in the check boxes having a slightly different look and feel.

Most browsers, though, tend to represent check-box buttons as square embossed buttons. The ToggleButton extender provides a way to simulate a check-box element that uses custom bitmaps. The extender is applied to a CheckBox control, and it replaces the control with a completely new markup block that uses custom images and provides the same behavior as a standard check box: ImageWidth and ImageHeight properties indicate the desired size of the images. Note that these attributes are required. UncheckedImageUrl and CheckedImageUrl specify the images to use when the check box is selected or not selected.

As a matter of fact, pop-up windows often greatly simplify a number of tasks-especially modal dialog boxes. One of the nasty things about HTML pop-up windows is that they are browser windows and require a page to navigate. The pop-up extenders that ASP. Instead, they are limited to popping up the content of any panel you indicate, with or without modality. Both extenders display a pop-up panel to display additional content, but they do it for different events. The HoverMenu, in particular, pops up its panel when the user moves the mouse cursor over the target control.

The panel can be displayed at a position specified by the developer. It can be at the left, right, top, or bottom of the target control. In addition, the control can be given an optional CSS style so that it looks like it is in a highlighted state. NET control instance and for providing tips to fill in some input fields. In Figurefor example, when the user hovers the cursor over the text box, a list of suggestions appears to simplify the work. The Panel1 control defines a list of radio buttons, each containing a suggestion for filling the text box.

Using Postbacks with ReorderList (C#)

The HoverMenu extender targets the text box Reoorderlist and defines Panel1 as its dynamic pop-up panel. The PopupPosition property indicates the position of the panel with respect to the target control. Likewise, Reorderlist not updating properties not Bi dating shanghai in the previous example code, such as OffsetX and OffsetY, Reordeelist the desired offset of the panel. The Reorderlist not updating sets the time in milliseconds to pass between the mouse movement and the display of the panel. To reorder the items in the list, the user simply drags the item's control bar to its new location.

Graphical feedback is shown where the item will be placed as it is dragged by the user. The data source is updated after the item is dropped in its new location. When bound to data, the ReorderList control will behave like many other databound controls. If the data you are displaying has a field that determines sort order e. Rather than extending existing controls on the page, it delivers a rich client experience directly and still has a traditional post-back server model for interacting with the application. The ReorderList can handle reorders in two ways, either via a callback or via a postback.

For a callback, no page postback happens on a reorder. This is useful if the data is only to be ordered. If the data items are to be deleted or edited, a full postback needs to occur to sync the server side state with the client side state. The PostbackOnReorder property enables this.