Can we merge or Combine or Join PDF files online without using any software?

Yes, this days there are many online websites like Merge PDF online tool where you can merge or join or combine pdf files for free without any use of software or registrations.
You can use this PDF Merge online tool by following below steps:

Difference between Asmx service and WCF service

ASMX web service:

• It can be hosted in IIS only
• It supports only HTTP
• They are the older way of creating services in .net when compared with Wcf

What is Xamarin?

Xamarin is a cross platform development platform for building mobile applications using c#.net.You can use Xamarin forms to build a application for android,ios and windows at once with the same common code. This is a great benifit for the business who want to relase there apps in all this three  stores with less cost and maintenance.
You can get more information from www.xamarin.com

Few tips to be a good programmer

To be a good programmer this tips maybe useful:

• Try playing around with the pre defined methods like writing those methods on your own or add few more features top of an existing predefined methods
• Write a code by keeping in mind for its resusability and maintenance 

Open Source library for c# net

There is an open source library know as pdfsharp which can be included in the .net application for doing all the  operations with the pdf files.

What all technologies are needed to be .Net Developer?

There are various technologies for you to be a .Net Developer, the main ones are:

• C#.net: Programming language
• Asp.net MVC: Framework for developing web applications
• Sql Server(T-sql): All about Database
• Ado.net: Framework for connecting .net application to database and do all operations from application to database
• Entity framework: Another new Framework for connecting .net application to database and do all operations from application to database by using LINQ queries
• WCF service: All about creating and consuming web services

How To Sort List of Strings without using predefined Sort() method in C#.net

The below code in a console application show you how you can sort any collection of string by writing your own sort method in c#. Mainly you need to know is to compare two strings in c#.

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

How To Sort List of Integers without using predefined Sort() method in C#.net

The below code in a console application show you how you can sort any collection of intergers by writing your own sort method in c#.

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