June 2nd, 2013

Facebook Style Wall Posts and Comments using Knockout.js and ASP.NET Web API

In this article, we will implement Facebook style wall posting with following features using Knockout.js, jQuery and ASP.NET MVC 4 with Web API.

1. Add new post and display the latest post first
2. Add new comment to post
3. Display date time in fuzzy time stamps (e.g. 5 mins ago..)
4. Auto-grow textarea for long posting and commenting
5. Comment link to toggle comment box
6. Display user avatar for posts and comments

January 26th, 2013

Using Microsoft Translator With ASP.NET MVC 4 Web API

This article explains how to use the Microsoft Translator API to translate text that was input by the user. Microsoft Translation Service is an online service which has support for AJAX, HTTP or SOAP and Basic subscriptions, up to 2 million characters a month, are free. Google’s free Translation API are deprecated So Microsoft Translator is a good alternative. In this sample, we will use AJAX API for English to Hindi translation.

January 13th, 2013

Database Change Notifications in ASP.NET using SignalR and SqlDependency

This article shows how to display real time sql server database change notification in ASP.NET using SignalR and SqlDependency object which represents a query notification dependency between an application and an instance of SQL Server. Consider your database is updated or synchronized by windows service in background, you have to display real time updated data. This article explains how to implement it.

December 14th, 2012

HTTP PATCH Requests (Partial Updates) in ASP.NET Web API and EF DB First

To update an entity in ASP.NET Web API, PUT request is used and we have to send all the properties even if only a subset have changed means if only one field is updated on the client side, we have to send the entire model back to the server to make an update. It’s not a cool way. PATCH request allows you to send just the modified properties for partial model updates. It reduces complexity in case of bigger tables. Here is a usage example to implement HTTP Patch request in ASP.NET Web API to update data with EF DB First.

September 16th, 2012

Passing Multiple Parameters to ASP.NET Web API With jQuery

ASP.NET MVC 4 Web API has limited support to map POST form variables to simple parameters of a Web API method. Web API does not deal with multiple posted content values, you can only post a single content value to a Web API Action method. This post explains the different ways to pass multiple parameters to Web API method.

September 9th, 2012

Creating a Chart with jQuery Flot and ASP.NET Web API

This article explains how to display interactive charts with Flot jQuery plugin and ASP.NET Web API. Flot is an open source Javascript plotting library produces graphical plots of arbitrary datasets on-the-fly client-side. We’ll get data from database using ASP.NET Web API and use it to display chart.

August 26th, 2012

Add, Edit, Delete In jqGrid With ASP.NET Web API

This post explains how to implement a simple CRUD (Create, Read, Update, and Delete) in jqGrid with ASP.NET MVC 4 Web API. If you are beginner to Web API, read this post to create a web API that supports CRUD operations. We will use GET, POST, PUT and DELETE HTTP methods for Select, Insert, Update and Delete operations respectively.