Posts filed under C#

Method Overloading in C#

Filed in ASP.NETTags: , , , ,

In object oriented programming languages the term overloading described as single use multiple interface. When we create more than one method with same name then it is called method overloading. To make difference in the method we can use different type of parameters or we can change the order of the same type of parameter or we can use different numbers of parameters in method overloading.

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What are the Partial Classes in C#

Filed in ASP.NET, C#Tags: , , ,

As we check our coding page in .net application we found that at the top after the namespaces there is a call that is partially defined in every web page. The question arrives in our mind that what is this Partial and why we use the class with partial access specifier. Why we not use the class as publicly or privately? Here we are to answer all these question. First we will get the partial class definition and its need.

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Reference Type in C#

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Reference type are important features of the C# language. They enable us to write complex and powerful application and effectively use the run-time framework. If we define the reference type variables in C# then the Reference type variables contain a reference to the data not the value. The value is stored in a separate memory area. for example in C# we used several reference type variables such as Classes, Structures, Array, Enumeration etc.

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Boxing and Unboxing in C#

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The two terms Boxing and Unboxing in C# are used when we need to convert one data type to other type. First we will discuss the Boxing. Boxing is the process of converting a Value type to the other Object type. When we use the Boxing of a value type to an objtct type the CLR wraps its value inside System.Object and stores it on the managed heap. In the term unboxing we perform reverse of boxing. In unboxing the value of an object type extracts and converted into value type. Boxing is an implicit process so we need not to write any code to box a value type. But in case of unboxing we need to do it explicitly,

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Namespace in C#.Net

Filed in ASP.NET, C#Tags: , , , , , , ,

Definition: As we know that every piece of code in .Net exists inside a .Net Type. Generally we put the code inside the class. The namespace is a collection of these classes or types. Every type exists inside a namespace. Namespaces can organize all the different types in the class library. Without namespace, these types would be grouped into a single long and messy list. In .Net the System namespace is stocked with several hundred classes. Also many namespaces are exists inside the System namespace. There are many namespaces that are must while developing a .Net application.

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C#.NET – Creating DLL to Hide Your Code

Filed in ASP.NET, C#Tags: , , , , , ,

The DLL also called Dynamic Link Library is a file that can be used dynamically by other programs. We create the DLL mainly to hide our confidential code so that we can use the code everywhere but can not see the code. When we talk about the layers or 3 and above tier application we need to understand one thing that why we create layers in our project. We only show some part of code to everyone and hide the main coding part. The benefit is we can use this code but can not see this.

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How to Extract a URL’s Title, Description and Images using HTML Agility Utility

Filed in ASP.NET, Web AppTags: , , , , , , , ,

Extracting the details from any web page URL is not so easy task. Because you need something to track that page. In this article we are going to extract the details like Title, Description and collection of Images. To do this we need HTML Agility Utility in our web application. When we share a link on Facebook or Google+ we see that the Image and description comes automatically after few seconds. Exactly they have coding to perform this. As we will proceed in this article we will learn step by step to do this. I am attaching a link to download the HTML Agility Utility and also the demo project that you can download on your PC for reference.

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How to use SQL Commands in C#.NET

Filed in ASP.NET, SQLTags: , , , , , , , , , ,

In this article we will see that how can use and execute the SQL Commands in Visual Studio. In this article we are using C# language. As we proceed in this article you will see that what steps are required to perform this task. We need the two main classes to do this. These classes are SqlConnection and SqlCommand.  First we will use to include the namespaces that are required to using these two classes. First we will include two namespaces by using ‘using’ keyword. After importing this namespaces we will create the object for SqlConnection and SqlCommand.

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The Common Type System and the Data Type that .Net Uses

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Because the .NET framework supports multiple languages within the platform, it defines a Common Type System (CTS). The CTS defines the basic data types that IL understands. Each .NET compliant language should map its data type to these standard data types. This makes it possible for the 2 languages to communicate with each other by passing/ receiving parameters to and from each other. For example: CTS defines a type, Int32, as integral data type of 32 bits (4 byte) which is mapped by C# through int and VB.net through its Integer data type.

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How to Generate Random Password in ASP.NET

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While ASP.NET is known for providing users/developers with inbuilt functions and methods for creating Login forms etc., yet there are sometimes when we need to generate a random password string for every new user created. Especially in applications like Online Examinations System where the admin generates a random default password for every new user created. We can make use of inbuilt random class for it and get the things done easily. So here we are discussing the best way to do so along with a step by step instruction with code:

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