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Taking Picture Snapshots with ASP.NET and HTML5
This is another post on HTML5 and ASP.NET integration . HTML5 brought along with it a number of great JavaScript APIs; one of them is getUserMedia , which is W3C standard and you can get a good description of it in MDN . In a nutshell, it allows access...
ASP.NET Callback Panel
Continuing with my quest for reusable, no dependencies, Web Forms AJAX controls , this time I wanted a replacement for the venerable UpdatePanel control. Specifically, I wanted to address the following issues: Allow the partial update of a region on my...
Speech Synthesis with ASP.NET and HTML5
The .NET framework includes the SpeechSynthesizer class which can be used to access the Windows speech synthesis engine. The problem with web applications is, of course, this class runs on the server. Because I wanted a mechanism to have speech synthesis...
JavaScript Events
Introduction A lot has changed with regard to events and event handling since the old days of HTML. Let’s have a brief look at it. Old Days In the old days, it was common to add event listeners in one of two ways: By code: 1: var elm = document.getElementById...
ASP.NET Upload Panel
Introduction I have been playing recently with HTML5, and one thing that I got to understand really well was the new upload mechanisms available. Specifically, I wanted to understand how Sky OneDrive , Google Drive , Dropbox , etc, all support dropping...
Client Callbacks In Action Part 1: Auto Completing Text Boxes
I have talked about client callbacks in the past , and even provided a general-purpose control for invoking code on the server-side. This time, I will provide two more examples: A text box control that displays a dynamic pick list generated from a server...
Wrapping ASP.NET Client Callbacks
Client Callbacks are probably the less known (and I dare say, less loved) of all the AJAX options in ASP.NET, which also include the UpdatePanel , Page Methods and Web Services . The reason for that, I believe, is it’s relative complexity: Get a reference...
Using ASP.NET Resources in JavaScript
If you use resources in your web application to localize your strings on the server side, you may have also felt the need to use the same resources in JavaScript. The thing is, there wasn’t any straightforward way to do it. Until now, that is! I wrote...
ASP.NET MVC Validation Complete
OK, so let’s talk about validation. Most people are probably familiar with the out of the box validation attributes that MVC knows about, from the System.ComponentModel.DataAnnotations namespace, such as EnumDataTypeAttribute , RequiredAttribute , StringLengthAttribute...
ASP.NET MVC CRUD Validation
One thing I didn’t refer on my previous post on ASP.NET MVC CRUD with AJAX was how to retrieve model validation information into the client. We want to send any model validation errors to the client in the JSON object that contains the ProductId , RowVersion...
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