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C# Dictionary

> In this post, we will see how to use a dictionary in C#. > A dictionary in C# is used to store collection of values with key values as pair. > So whenever user wants to get the value then he will have to pass the key value to the dictionary and it will return the value to the user. > The namespace of the C# dictionary is System.Collections.Generic. > Let’s take a simple example of storing digits from 0 to 9 as key value and these digits in the word form as the collection values. > Here, the user will type a digit from 0 to 9 and on clicking the button, it gives the digit in the word form. > To keep this example simple, here the dictionary will be having digits from 0 to 9 only and if user enters a value less than 0 or greater than 9 then he will get the appropriate message. > Following is the code for demonstrating the use of the Dictionary : HTML Code: <body> <form id="form1" runat="server"> ...

Things to know if you are a web developer or want to be

Following are some of the basic points to know: WHAT YOU SHOULD KNOW TO BECOME A .NET WEB DEVELOPER? > HTML(Hyper Text Markup Language). > Client Side Scripting language like JavaScript or VBScript or library like jQuery. > Programming languages like C#,VB(Visual Basic),C++. > Database query language like SQL(Structure Query Language),Oracle etc. > CSS (Cascading Style Sheet) to make web pages look interactive. WHAT IS A WEB SERVER > A web server is a program which serves web pages to the web users. > The web user uses the application called 'Browser' (e.g. Google Chrome, Mozilla Firefox, Opera Mini etc.) t...

.config files

> To store the connection strings at a place, configuration files are used in .net application. > We use web.config file for web application and app.config file for windows application. WEB.CONFIG:- • It’s a configuration file for web application. • This file is used to store the connection string which contains the code for the connectivity with the data source. • This file is added by default if we are developing ASP.NET web application. • The extension of a configuration file is .config . • A configuration file can store multiple connectionStrings . APP.CONFIG:- • It’s a configuration file for windows application....

ConfigurationManager Class

• The ConfigurationManager class is used to read the connectionString from the configuration file. • This class is present in the Configuration namespace. • The assembly reference of this class is added by default for web application. • But for windows application,we need to add assembly reference explicitly. • To add reference in windows application project in visual studio:- • Go to solution explorer. • Right-Click on the references section. • Select the Add Reference option from the menu. • Select the System.Configu...

ConnectionStrings

• While developing any application that has to interact with the data source in order to retrieve,insert,update and delete the data from it, there are possibilities that a developer can make mistakes while establishing connection to the data source by hard coding the ConnectionString in the source code. • Hard coding such lines of code for an application consumes time and requires man power to make an application work perfectly if the application has many web pages or windows forms. • The developer has to connect the application to different data source in order to test it. In such situation, hard coding may lead to errors in the source code because we need to make changes for every ConnectionStrings in all web pages/windows forms for a single data source which is definitely error prone and time consuming. • So to overcome such situation, we have ConnectionString...

Project available: MAVSM

Following project is ready available for academic purpose and business requirements: Music and Video Store Management (MAVSM): Objectives : The objective of “ Music and Video Store Management ” is to provide such a system that can make the data management process automated for a Music and video store/production house. The system will help the users for the following operations:- Ø To receive customers’ (regular and visiting) orders. Ø To keep track of the orders processing detail/status passed at the media creation and processing center. Ø To generate customers invoice. Ø To maintain records of the movies and music (old and new) with the data like video and audio quality, bit rate, resolution, format etc. Ø To maintain the detail of the company that produces or own the movie or music copyrights. Ø To record sales information as well as royalty calculation given to the company who owns copyrights of the produce...