DataPager - Controls like Gridview, Repeater exhibit the pagination behaviour. This is useful when display results return far too many records than an ideal web page height. A search may return countless records, but the web page size should not ideally go on and on depending on the number of records returned. For this, the feature of Page Numbers, OR Previous-Next feature at the bottom of the display results seem to be more ideal. For this purpose, the DataPager control has been introduced.
While using a ListView control, a DataPager control may be used along with it, to provide a paging functionality. The DataPager has a property called PagerControlId which is set to the ID of the ListView control. Simple!
ListView - This control is like an advanced Repeater control, and is as good as a GridView control in terms of features it has. It may be set to any standard data source like SQL, Oracle, Access, XML and even LINQ.
Say you want to display a matrix of values with 3 records per row, the ListView control is the ideal solution. The ListView settings may be made manually using the aspx page, OR may also be set using the Smart Tag feature to launch the properties dialog box.
ScriptManager - Every Ajax enabled page in ASP.NET that makes use of the Ajax Library needs to have a boss or a manager that takes care of the internal Ajaxification process. All this is controlled by the ScriptManager control. Every page should have not more than one ScriptManager control. It takes care of the javascript functionalities, partial postbacks made by the web page by taking care of the XmlHttpRequest object from behind the scenes. More on Ajax, Read Here.
If the EnablePartialPostback property of the ScriptManager is set to false, the web page exhibits a full page postback.
ScriptManagerProxy - There might be a scenario where your master page and content page need to have separate ScriptManager controls. For such situations, the ScriptManagerProxy control comes to rescue. Here, the masterpage may contain the ScriptManager control, and the content page may use the ScriptManagerProxy control. However, internally, the ScripManagerProxy control communicates with the corresponding ScriptManager class of the web page. The ScriptManagerProxy control actually transfers its set of responsibilities to the ScriptManager control.
UpdatePanel - This is the control that wraps all the controls that need to be partially posted back. A web page may comprise of several UpdatePanels. In case there is any event happening within the controls wrapped inside an UpdatePanel control, the entire page isn't posted back, rather only the contents within the UpdatePanel are posted back to the web server. If the partial postback property is to be avoided, set the ChildrenAsTriggers property of the UpdatePanel to false.
Further, the Triggers of an UpdatePanel may be used to set the application in such a way that the partial postback of the UpdatePanel may be invoked from controls that lie outside the UpdatePanel.
UpdateProgress - There are scenarios where a request may take time, an image may take time to load, a business logic may time to calculate, data may take time to load due to diversities in the source. In UpdatePanels, as postbacks are partial in nature, the browser's default progress bar does not appear. For avoiding any confusion to the end user, that a page process is going on in the background, the UpdateProgress control may be used. This is like a progress bar that shows to the end user that a process is going on. The progress may be set to any moving gif image as well, to enhance the look & feel of the web application.
19. Whats an assembly? Assemblies are the building blocks of the .NET framework. Overview of assemblies from MSDN
20. Describe the difference between inline and code behind. Inline code written along side the html in a page. Code-behind is code written in a separate file and referenced by the .aspx page.
21. Explain what a diffgram is, and a good use for one? The DiffGram is one of the two XML formats that you can use to render DataSet object contents to XML. For reading database data to an XML file to be sent to a Web Service.
22. Whats MSIL, and why should my developers need an appreciation of it if at all? MSIL is the Microsoft Intermediate Language. All .NET compatible languages will get converted to MSIL.
23. Which method do you invoke on the DataAdapter control to load your generated dataset with data? The .Fill() method
24. Can you edit data in the Repeater control? No, it just reads the information from its data source
25. Which template must you provide, in order to display data in a Repeater control? ItemTemplate
26. How can you provide an alternating color scheme in a Repeater control? Use the AlternatingItemTemplate
27. What property must you set, and what method must you call in your code, in order to bind the data from some data source to the Repeater control? You must set the DataSource property and call the DataBind method.
28. What base class do all Web Forms inherit from? The Page class.
29. Name two properties common in every validation control? ControlToValidate property and Text property.
30. What tags do you need to add within the asp:datagrid tags to bind columns manually? Set AutoGenerateColumns Property to false on the datagrid tag
31. What tag do you use to add a hyperlink column to the DataGrid?
32. What is the transport protocol you use to call a Web service? SOAP is the preferred protocol.
33. True or False: A Web service can only be written in .NET? False
34. What does WSDL stand for? (Web Services Description Language)
35. Where on the Internet would you look for Web services? (http://www.uddi.org)
36. Which property on a Combo Box do you set with a column name, prior to setting the DataSource, to display data in the combo box? DataTextField property
37. Which control would you use if you needed to make sure the values in two different controls matched? CompareValidator Control
38. True or False: To test a Web service you must create a windows application or Web application to consume this service? False, the webservice comes with a test page and it provides HTTP-GET method to test.
39. How many classes can a single .NET DLL contain? It can contain many classes.
