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Redirect on select option in select box

Because the first option is already selected, the change event is never fired. Add an empty value as the first one and check for empty in the location assignment. Here’s an example: https://jsfiddle.net/bL5sq/ <select onchange=”this.options[this.selectedIndex].value && (window.location = this.options[this.selectedIndex].value);”> <option value=””>Select…</option> <option value=”https://google.com”>Google</option> <option value=”https://yahoo.com”>Yahoo</option> </select>

Creating delegates manually vs using Action/Func delegates

The advent of Action and Func family of delegates has rendered custom delegates less used, but the latter still finds uses. Advantages of custom delegates include: As others have pointed, conveys intent clearly unlike generic Action and Func (Patrik has a very good point about meaningful parameter names). You can specify ref/out parameters unlike the … Read more

SignalR + posting a message to a Hub via an action method

Please note that the SignalR API has changed multiple times since this question was asked. There is a chance that some answers will become out of date. This does not mean that they should be down-voted as they were correct at the time of writing There is another updated answer for this, as seen in … Read more

How to dismiss notification after action has been clicked

When you called notify on the notification manager you gave it an id – that is the unique id you can use to access it later (this is from the notification manager: notify(int id, Notification notification) To cancel, you would call: cancel(int id) with the same id. So, basically, you need to keep track of … Read more

ASP.Net MVC Handling Segments with Route

A placeholder (such as {category}) acts like a variable – it can contain any value. The framework must be able to understand what the parameters in the URL mean. You can do this one of three ways: Provide them in a specific order, and for a specific number of segments Put them in the query … Read more

Barcode Scanner implementation on Java [closed]

I recently had to implement a scanner system to interact with java. I used Honeywell Voyager MS9540 USB barcode scanner. As a default the scanner sent the data straight as keyboard input – no driver required. But it was very easy to get this model to interact directly with java rather than using a keyboard … Read more

Execution order of events when pressing PrimeFaces p:commandButton

It failed because you used ajax=”false”. This fires a full synchronous request which in turn causes a full page reload, causing the oncomplete to be never fired (note that all other ajax-related attributes like process, onstart, onsuccess, onerror and update are also never fired). That it worked when you removed actionListener is also impossible. It … Read more

Func vs. Action vs. Predicate [duplicate]

The difference between Func and Action is simply whether you want the delegate to return a value (use Func) or not (use Action). Func is probably most commonly used in LINQ – for example in projections: list.Select(x => x.SomeProperty) or filtering: list.Where(x => x.SomeValue == someOtherValue) or key selection: list.Join(otherList, x => x.FirstKey, y => … Read more

Default action to execute when pressing enter in a form

This is not specific to JSF. This is specific to HTML. The HTML5 forms specification section 4.10.22.2 basically specifies that the first occuring <input type=”submit”> element in the “tree order” in same <form> as the current input element in the HTML DOM tree will be invoked on enter press. There are basically two workarounds: Use … Read more

Action Image MVC3 Razor

You can create an extension method for HtmlHelper to simplify the code in your CSHTML file. You could replace your tags with a method like this: // Sample usage in CSHTML @Html.ActionImage(“Edit”, new { id = MyId }, “~/Content/Images/Image.bmp”, “Edit”) Here is a sample extension method for the code above: // Extension method public static … Read more