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How to enable CORS in web API2

In this post I am going to show you a very simple and useful tips that how to enable CORS in web API2.
What is CORS
Cross-origin resource sharing (CORS) is a mechanism that allows many resources (e.g. fonts, JavaScript, etc.) on a web page to be requested from anotherdomain outside the domain from which the resource originated
How to enable in CORS in web API2
In Visual Studio, from the Tools menu, select Library Package Manager, then select Package Manager Console. In the Package Manager Console window, type the following command:Install-Package Microsoft.AspNet.WebApi.Cors Open the file App_Start/WebApiConfig.cs. Add the following code to the WebApiConfig.Register method.
public static void Register(HttpConfiguration config) { // New code config.EnableCors(); config.Routes.MapHttpRoute( name: "DefaultApi", routeTemplate: "api/{controller}/{id}", defaults: new { id = RoutePa…

How To Change your ASP.Net controls at runtime

Lets say you are working in a fairly large asp.net application. Now because of situation (or clients request) you want to change all the textbox or button control to some server control or user control. This can be very very tedious JOB if you are using Asp.net 1.X. But if you are using Asp.net 2.0 , there is a very easy way to get this done using tagMapping
it’s a way to turn all instances of a type into another type at compile time. In human language it means that it can turn all e.g. System.Web.UI.WebControls.Textbox (in our example ) instances in the entire website into another control.That is so cool that I had to do a little example. I’ve created a very simple control that inherits from a TextBox and overrides the Text property so that it HTML encodes the text. I placed it in the App_Code folder and called it SafeTextBox.

using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; …

How to change some text before it is sent to the client.

In this post,I will show you how to modify the response before it is sent to the client.The trick here is to override the Render method of the Page class and modify the response.
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="InterceptHtml.aspx.cs" Inherits="InterceptHtml" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title>Untitled Page</title> </head> <body> <form id="form1" runat="server"> <div> Hello World! <br /> Hi </div> </form> </body> </html>
using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using Syst…

How to create custom config section in asp.net

You can extend ASP.NET configuration settings with XML configuration elements of
your own. To do this, you create a custom configuration section handler.
The handler must be a .NET Framework class that inherits from 
the System.Configuration.ConfigurationSection class. The section handler 
interprets and processes the settings that are defined in XML configuration 
elements in a specific section of a Web.config file. You can read and write 
these settings through the handler's properties.
using System; using System.Collections.Generic; using System.Configuration; using System.Linq; using System.Web; namespace CustomConfigSection { publicclass LoginRedirectByRoleSection : ConfigurationSection { [ConfigurationProperty("roleRedirects")] public RoleRedirectCollection RoleRedirects { get { return (RoleRedirectCollection)this["roleRedirects"]; } set { this["roleRedirects"] = valu…

How to read namespace based xml using Linq

In this post,I will show you how to read xml with namespace.For this demo,I will use following xmlstructure<?xml version="1.0" encoding="utf-8" ?> <accounts xmlns="urn:account"> <account>1001</account> <account>1002</account> </accounts> using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Xml.Linq; namespace XLinq { class Program { static void Main(string[] args) { var doc = XDocument.Load("accounts.xml"); var query = from x in doc.Descendants("{urn:account}account") select x; foreach (var item in query) { Console.WriteLine(item); } } } }

Natural Sorting in asp.net

In this post,I will show you how to implement natural sorting in asp.net.There are several ways to implement this,but in this post,I am going to use windows api.
Check out following link for more detailsStrCmpLogicalW (shlwapi)
Let's start the implementation

Create a new class named FileList and add following code


Create a new class in App_Code folder and add following code


Here is complete source codeFileList.cs
using System; using System.Collections.Generic; using System.Linq; using System.Web; publicclass FileList { public FileList() { } publicstring Name { get; set; } public DateTime DateModified { get; set; } publicstring FileType { get; set; } publicstatic List<FileList> List { get { returnnew List<FileList> { new FileList{Name="file11.txt",DateModified=DateTime.Now,FileType="Text"}, new FileList{Name="file1.txt",DateModified=DateTime.Now,FileType="Text"}…

Calling cross domain wcf service using Jquery

In this post,I will show you how to call cross domain service using jquery.
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Runtime.Serialization; using System.ServiceModel; using System.IO; using System.ServiceModel.Web; using System.Runtime.Serialization.Json; namespace CorssDomainService { [DataContract] publicclass Order { [DataMember] publicint ID { get; set; } [DataMember] public DateTime OrderDate { get; set; } [DataMember] publicstring Name { get; set; } } [ServiceContract] publicinterface IOrderService { [OperationContract] [WebInvoke(Method = "GET", UriTemplate = "/", ResponseFormat = WebMessageFormat.Json )] string ProcessOrder(); } [ServiceBehavior] publicclass OrderService : IOrderService { [OperationBehavior] publicstring ProcessOrder() { …

How to validate asp.net form using Jquery

In this post I will show you how to validate asp.net form using jqery. Create a new website,add a new js file ,and add following code inside it function validateForm(e) { var formIsValid = true; // check that a valid email address has been entered var emailRegExp = /[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}/; if (!emailRegExp.test(String($("#txtEmail").val()).toUpperCase())) { addError("txtEmail", "Please enter a valid email address."); formIsValid = false; } else { removeError("txtEmail"); } // check that first name has one or more characters if ($("#txtFirstName").val() == '') { addError("txtFirstName", "This field is required."); formIsValid = false; } else { removeError("txtFirstName"); } // check that last name has one or more characters if ($("#txtLastName").val() == '') { …