ASP.NET Introduction

1 ASP.NET Introduction

·          1.1  What isASP.NET ?

·          1.2  Asp.Netand .Net Framework

·          1.3  FirstAsp.Net Program

·          1.4  Deployan ASP.NET Web Application

ASP.NET Tutorial , Help and Source Code in VB.NET and C#

·        ASP.NET is a technology for developing, deploying, and running Web applications.

·        ASP.NET is a part of the Microsoft .NET Framework, so all .NET Framework features are available to ASP.NET applications.

·        ASP.NET web pages are simply pure text, like HTML files.

·        ASP.NET web pages are the main building block for application development.

·        You can develop your applications in any language compatible with the common language runtime, including Microsoft Visual Basic and C#.

·        These languages enable you to develop ASP.NET applications that benefit from the common language runtime, type safety, inheritance, and so on.

·        ASP.NET incorporates all the important standards of our time, such as XML and SOAP, plus with ADO.NET and the foundation class libraries.

·        Visual Studio .NET is an excellent development tool for constructing ASP.NET web applications.

·         It provides all of the necessary tools and support for creating ASP.NET web applications.

·        ASP.NET web applications are hosted by Internet Information Server (IIS), which accepts requests from clients and optionally authenticates them before passing the requests on to  Web application. From the following chapters you can learn more about ASP.NET technology in detail.

1.1 What is ASP.NET ?

·        ASP.NET introduces entirely a new object-oriented execution model. In order to overcome the limitations of ASP (Active Server Pages) ,

·        Microsoft has developed a new technology called Microsoft ASP.NET . ASP.NET is more than just the next version of ASP technology, using its mature programming languages VB.NET and C#.

·        ASP.NET is built on the Common Language Runtime (CLR), allowing programmers to write ASP.NET code using any supported .NET languages like VB.NET and C#.

·        Unlike the ASP runtime, ASP.NET uses the Common Language Runtime (CLR) provided by the .NET Framework.

·        The Microsoft .NET Platform provides all of the tools and technologies that are needed to build distributed Web applications.

·        ASP.NET is integrated with Visual Studio .NET, which provides a GUI designer, a rich toolbox, and a fully integrated debugger.

·        In ASP.NET, you can write the HTML code in the .aspx file and the code for programming logic in the code-behind file (.aspx.vb or .aspx.cs ).

·         Also ASP.NET introduces two sets of controls, the HTML controls and the Web controls, which are collectively known as "server controls."

1.2  Asp.Net and .Net Framework

The .NET Framework is an essential technology for ASP.NET development. It provides the basic system services that support ASP.NET, as well as Windows Forms development, the new rich client development technology provided by .NET. The .NET Framework consists of two main parts:

1. The common language runtime : It provides a run-time environment for the execution of code written in any .NET language.

2. The .NET Framework class library : It is designed to support the efforts of developers by providing base classes from which developers can inherit.

1.3 First Asp.Net Program

ASP.NET is integrated with Visual Studio .NET, which provides a GUI designer, a rich toolbox, and a fully integrated debugger. In ASP.NET, you can write the HTML code in the .aspx file and the code for programming logic in the code behind file (.aspx.vb or .aspx.cs ) depends on which .Net language you are selected.         Web Forms allow you to apply Rapid Application Development techniques to building web applications. Simply drag and drop controls onto your form, double-click on a control, and write the code respond to the associated event. You can program ASP.NET in any language that supports the .NET CLS.

Select Visual Studio from Startà All Programs . Select New Web Site from File menu of Visual Studio.  Then you can see a window similar to the following image.

Select ASP.NET Web Site from the New Web Site dialog box. The Name and Location edit fields will contain default values. If you want to change the name , you can do it by editing the Location field. From this dialog box you can select which language (C# or VB.NET) you want to develop ASP.NET website. You can select your convenient language from the Language combobox.

After click the OK button you will get a blank form. You can select controls from the Toolbox which is located left side to the blank form.

Click on the Label control and drag it to the design surface. It will automatically go to the upper-left corner of the design surface and contain the word Label.

Select the label control and change the Text property of label control to "This is my first asp.net program". The property window is placed right side down of your Visual Studio Environment.

After the coding, press F5 to run the web application. When either the C# or VB.NET version is run, it will look like the browser shown.

1.4 Deploy an ASP.NET Web App

When you want to deploy your ASP.NET program on IIS, all you need to do is set up an IIS virtual directory on the target machine and copy the application files to it. You can simply copy the application files to the directory structure on the production server, using one of the following tools:

 

1. The XCOPY command-line tool can copy files from one computer to another on an intranet or internal network.

2. Windows Explorer can copy files from one computer to another on an intranet or internal network.

3. You can use the FTP tool of your choice to copy  application files from one computer to another over the Internet.

4. If your application has been developed using Visual Studio .NET, you can use the Copy Project command to copy files from one computer to another on an intranet or internal network.