Bipin Joshi

Introduction While debugging an ASP.NET Web API you may need to figure out how your code is being executed and you may also want to track its execution sequence. That is where tracing comes into the picture. Using tracing you can trace the flow of execution and various events happening in the Web API. You […]

Introduction By default Web API action methods use the same HTTP method name that they are serving. For example, to deal with the HTTP GET method the Web API has the Get() action method. However, you may want to customize these action method names for the sake of better readability. There are several ways in […]

Introduction Sometimes you need to save and retrieve image data in SQL Server as a part of Web API functionality. A common approach is to save images as physical image files on the web server and then store the image URL in a SQL Server database. However, at times you need to store image data […]

Introduction The data entered by the end user in various form fields must be validated before it is saved in the database. Developers often use validation HTML helpers provided by ASP.NET MVC to perform the input validations. Additionally, you can also use data annotation attributes from the System.ComponentModel.DataAnnotations namespace to perform validations at the model […]

Introduction A website is exposed to various types of attacks and one of the most common types of attack is what is known as Cross Site Scripting (XSS). In a cross site scripting attack, malicious markup and script is entered in the web pages that are viewed by other users. If proper care is not […]

Introduction Websites often need to generate SEO friendly URLs. In ASP.NET Web Forms applications, a URL is tied to a physical .aspx file. This default mapping between a URL and physical file makes it difficult for Web Forms applications to generate SEO friendly URLs. One option available to ASP.NET developers is to use URL routing […]

Originally published June 21, 2012.  Last updated May 17, 2013. Introduction ASP.NET Web Forms have provided validation controls since the initial releases. In the earlier releases of ASP.NET these validation controls used JavaScript emitted by ASP.NET Web Form framework. The unobtrusive validation, however, makes use of the data-* attributes of HTML5 for validation purpose. This […]

Introduction For security reasons browsers prohibit AJAX calls to resources residing outside the current origin. This means you under the current settings, you can’t provide a service exposed by a Web API to some other origin. However, at times you might want to allow a legitimate origin to access a resource. This is where Cross […]

Introduction Most of us deal with Zip files on a daily basis. Normally people use some third-party utility to create, open and extract Zip files. At times you may want to deal with Zip files programmatically. Luckily, .NET framework 4.5 introduces some new classes in System.IO.Compression namespace that allows you to do just that. If […]

Introduction C# preprocessor directives are commands that are meant for the C# compiler. Using preprocessor directives you instruct the C# compiler to alter the compilation process in some way. For example you may instruct the C# compiler that a particular block of code be excluded from the compilation process. This article examines several C# preprocessor […]

Introduction To deal with the complexity involved in asynchronous programming, Windows Store apps make use of what is known as a Promise. The implementation of Promises in Windows Store apps is based on Common JS Promises proposal. At code level a promise is an object that represents the result of an asynchronous operation and returns […]