1. GTU LIVE PROJECT TRAINING GUIDELINES. By TOPS Technologies http://www.tops-int.com http://www.tops-int.com/asp-net-training-course.html TOPSTechnologiesAsp.netcourse

2. INTRODUCTION First of all I would like to thank TOPS Technologies for This article, which gives me a great opportunity to write an article for beginners on ASP.NET web development here at Tops technologies. After creating PPT on caching and view state for beginners, I have decided to Create an PPT for beginners on the ASP.NET Application Folders. However, I will be back with another PPT on rest of state management. Like my other PPT, I believe this will also give you very good idea on the Application Folders. Please give your valuable suggestions and ideas for improvement that I can incorporate into this article, as well as my future PPT. TOPSTechnologiesAsp.netcourse 3. OVERVIEW - ASP.NET APPLICATION FOLDERS ASP.NET 2.0 uses a file-based approach. That means, all class files, resource files, data files and folders are maintained in a hierarchical structure. If we are working with ASP.NET 2.0, we can add files and folders using the Add Itemsoption. If we look at a sample application hierarchy, it will look like the following figure. We can add as many as files and folders as we like (according to our requirements) within our solutions,and it won't be necessary to recompile them each and every time they are added. It is ASP.NET'stask to dynamically compile them when required. So, what ASP.NET 2.0 does is, it uses a predefined folder structure containing the files (classes, images, resources, etc.), to compile them dynamically and we can access those files throughout the application. ASP.NET also provides special folders to maintain files and resources. Let's see the advantages of using these folders. TOPSTechnologiesAsp.netcourse 4. ADVANTAGES OF ASP.NET APPLICATION FOLDERS Following are the main advantages of use of ASP.NET's Application Folders We can maintain resources (classes, images, code, databases, themes) in an organized manner, which allows us to develop and maintain sites easily All files and folders are accessible through the application We can add as many files as required Files are compiled dynamically when required TOPSTechnologiesAsp.netcourse 5. DIFFERENT TYPES OF APPLICATION FOLDER ASP.NET treats the following folders in a special manner. They are: App_Code Bin App_Data App_Theme App_Browser App_WebReference App_LocalResource App_GlobalResource TOPSTechnologiesAsp.netcourse 6. DETAILS OF THE APPLICATION FOLDERS Now, to look at the use of these folders, I am going to start from App_Code. App_Code Folder As its name suggests, the App_Code Folder stores classes, typed data sets, etc. All the items that are stored inApp_Code are automatically accessible throughout the application. If we store any class files (like .cs or .vb) it compiles them automatically. It automatically creates type data sets from .xsd (XML schema) files, and creates XML web service proxy classes from WSDL.Let's have a look at how we can use the App_Code folder. We can add an App_Code folder, by Solution File right click Add ASP.NET Folder App_Code. The App_Codefolder is now added to your application. TOPSTechnologiesAsp.netcourse 7. TOPSTechnologiesAsp.netcourse Note: Try to add one more App_Code folder by using the same steps. Oops... the App_Code folder is no longer available there. So, ASP.NET allows you to add an App_Code folder only once. 8. Now we can add new items like classes, text and xml files into the App_Code folder and we can also add existing files there. TOPSTechnologiesAsp.netcourse 9. Let's have a look at one example that shows how it works. Into the App_Code folder, I have added a classMyCSharpClass.cs. TOPSTechnologiesAsp.netcourse 10. In that class I have written a small spice of code for adding two numbers. TOPSTechnologiesAsp.netcourse 11. Now, Try to access this class, from any where in your application. You will see that MyCSharpClass is accessiblethroughout the application. If we want to store different classes like .cs or .vb, then what will happen? If we kept both .cs and .vb classes in the same folder, it will give following compilation error: TOPSTechnologiesAsp.netcourse 12. We have a solution to overcome this problem. We have to create separate folders for C# and for VB or other classes. TOPSTechnologiesAsp.netcourse 13. Store class files separately in those folders and an configure the folder hierarchy in the web.config file. TOPSTechnologiesAsp.netcourse 14. BINFOLDER The Bin folder is used for keeping assemblies inside it. We can access those as a reference from anywhere of our web application. Use of Bin folder comes into the picture if we use any class library within our web application. Suppose we are creating a class library called TestLib. After building the library, we will get TestLib.dll. Now, right click on solution file AddReferences Project, select the TestLib Project, click on OK. Check the Bin folder, it will containTestLib.dll and TestLib.pdb files. TOPSTechnologiesAsp.netcourse 15. APP_LOCALRESOURCEFOLDER Local resources are specific to a single web page, and should be used for providing multilingual functionalityon a web page. Local resources must be stored in the App_LocalResource subfolder of the folder containing the web page. Because you might have local resources for every page in your web application, you might have App_LocalResource subfolders in every folder. Resource file names should be like [.langauge].resx. Some examples of local resource files are,Mypage.aspx.ex.resx and Mypage.aspx.de.resx. Default.aspx.res x is the base resource file to use if no other resource file matches with the user's current culture. If you want to create local resources for a page, open the design view of the page and then from ToolMenu selectGenerateLocal Resource. You will then see that a resource file is automatically created in the correspondingApp_LocalResource folder. TOPSTechnologiesAsp.netcourse 16. APP_GLOBALRESOURCEFOLDER TheApp_GlobalResourcefoldercanbereadfromanypage orcodethatisanywhereinthewebsite.Globalresources mustbestoredintheApp_GlobalResourcefolderattheroot oftheapplication.Weshoulduse theApp_GlobalResourcefolderwhenweneedasingle resourceformultiplewebpages.WecandefineASP.NET controlpropertiesbymanuallyassociatingthemwith resourcesinglobalresourcefiles.Youcanaddaglobal resourcefilebyrightclickingon theApp_GlobalResourcefolderandclickingonAddItems. Add.resxfilesasresources. TOPSTechnologiesAsp.netcourse 17. SUMMARY WehaveexplainedinthisPPtallabouttheuseof applicationfoldersthatareavailableinASP.NET. Wehopewehavedescribedthemwellenoughfor youtounderstand.Thereislotsmoretolearn,like howtodesignthemesandskins,andworkingwith resourcefiles.Wearegivingsomereferencelinks attheend,thatcanhelpyouinfurtherstudy. Pleasereadtheselinks,atleasttheoneon resources,whichareaveryimportantpartof ASP.NET2.0.InfutureweplantocreateanPPTfor beginnersonASP.NETResources.Butnotnow. Thanksforreading,andpleasedon'tforgettogive yoursuggestions! TOPSTechnologiesAsp.netcourse 18. BIO Indetailedknowledgeandguidelineskindlyvisitus atyournearestcenter. Youcanvisitusat http://www.tops-int.com http://www.tops-int.com/asp-net-training- course.html WealsoDoliveprojecttraining,freeworkshopand seminarhostedbyourformerstudentsand facultieseverySaturdaytosharetheirknowledge andexperiencewithnewbie's. TOPSTechnologiesAsp.netcourse 19. TOPSTechnologiesAsp.netcourse