Distinct operator in Linq

Linq operator provides great flexibility and easy way of coding. Let’s again take one more example of distinct operator. As name suggest it will find the distinct elements from IEnumerable. Let’s take an example of array in console application and then we will again print array to see is it working or not. Below is the code for that. In this application I have integer array which contains duplicate elements and then I will apply distinct operator to this and then I will print again result of distinct operators to actually see whether its working or not.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Experiment
{
   class Program
   {
       static void Main(string[] args)
       {
           int[] intArray = { 1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5 };
           var uniqueIntegers = intArray.Distinct();
           foreach (var uInteger in uniqueIntegers)
           {
               Console.WriteLine(uInteger);
           }
           Console.ReadKey();

       }
   }
}

Below is output as expected..

That’s cool..Stay tuned for more.. Happy programming.

Technorati Tags: Linq,Distinct

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ASP.NET 4.0- Html Encoded Expressions

We all know <%=expression%> features in asp.net. We can print any string on page from there. Mostly we are using them in asp.net mvc. Now we have one new features with asp.net 4.0 that we have HTML Encoded Expressions and this prevent Cross scripting attack as we are html encoding them.

ASP.NET 4.0 introduces a new expression syntax <%: expression %> which automatically convert string into html encoded. Let’s take an example for that.

I have just created an hello word protected method which will return a simple string which contains characters that needed to be HTML Encoded. Below is code for that.

protected static string HelloWorld()
{
  return "Hello World!!! returns from function()!!!>>>>>>>>>>>>>>>>>";
}

Now let’s use the that hello world in our page html like below. I am going to use both expression to give you exact difference.

<form id="form1" runat="server">
<div>
  <strong><%: HelloWorld()%></strong>
</div>
<div>
  <strong><%= HelloWorld()%></strong>
</div>
</form>

Now let’s run the application and you can see in browser both look similar.

But when look into page source html in browser like below you can clearly see one is HTML Encoded and another one is not.

That’s it.. It’s cool.. Stay tuned for more.. Happy Programming

Technorati Tags: ASP.NET 4.0,HTMLEncode,C#4.0

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.NET Framework 4.0-Guid.Parse Method

In earlier version of .NET framework we don’t have Guid.Parse method Now we have an Guid.Parse method in .NET Framework and it’s work like any parse method. Let’s see it by an example. Let’s create console application for that.

class Program
{
   static void Main(string[] args)
   {
       string newID = "f718943d-757d-4975-947b-3dbff1205be6";
       Guid myGuId = Guid.Parse(newID);
       Console.WriteLine(myGuId.ToString());
       Console.ReadLine();


   }
}

and as expected here is the out put for that.

That’s is it’s cool. Stay tuned for more..Happy programming..

Technorati Tags: Guid,C#.NET

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