ASP.NET
Qus1: Explain the differences between Server-side and Client-side code?
Ans: Server-side code executes on the server. Client-side code executes in the client's browser.
Qus2: What type of code (server or client) is found in a Code-Behind class?
Ans: The answer is server-side code since code-behind is executed on the server. However, during the code-behind's execution on the server, it can render client-side code such as JavaScript to be processed in the clients browser. But just to be clear, code-behind executes on the server, thus making it server-side code.
Qus3: Should user input data validation occur server-side or client-side? Why?
Ans: All user input data validation should occur on the server at a minimum. Additionally, client-side validation can be performed where deemed appropriate and feasible to provide a richer, more responsive experience for the user.
Qus4: What is the difference between Server.Transfer and Response.Redirect? Why would I choose one over the other?
Ans: Server.Transfer transfers page processing from one page directly to the next page without making a round-trip back to the client's browser. This provides a faster response with a little less overhead on the server. Server.Transfer does not update the clients url history list or current url. Response.Redirect is used to redirect the user's browser to another page or site. This performas a trip back to the client where the client's browser is redirected to the new page. The user's browser history list is updated to reflect the new address.
Qus5: Can you explain the difference between an ADO.NET Dataset and an ADO Recordset?
Ans: Valid answers are:
- A DataSet can represent an entire relational database in memory, complete with tables, relations, and views.
- A DataSet is designed to work without any continuing connection to the original data source.
- Data in a DataSet is bulk-loaded, rather than being loaded on demand.
- There's no concept of cursor types in a DataSet.
- DataSets have no current record pointer You can use For Each loops to move through the data.
- You can store many edits in a DataSet, and write them to the original data source in a single operation.
- Though the DataSet is universal, other objects in ADO.NET come in different versions for different data sources.
Qus6: What is the Global.asax used for?
Ans: The Global.asax (including the Global.asax.cs file) is used to implement application and session level events.
Qus7: What are the Application_Start and Session_Start subroutines used for?
Ans: This is where you can set the specific variables for the Application and Session objects.
Qus8: Can you explain what inheritance is and an example of when you might use it?
Ans: When you want to inherit (use the functionality of) another class. Example: With a base class named Employee, a Manager class could be derived from the Employee base class.
Qus9: Whats an assembly?
Ans: Assemblies are the building blocks of the .NET framework. Overview of assemblies from MSDN
Qus10: Describe the difference between inline and code behind.
Ans: 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.
Qus11: Explain what a diffgram is, and a good use for one?
Ans: The DiffGram is one of the two XML formats that you can use to render Data Set object contents to XML. A good use is reading database data to an XML file to be sent to a Web Service.
Qus12: Whats MSIL, and why should my developers need an appreciation of it if at all?
Ans: MSIL is the Microsoft Intermediate Language. All .NET compatible languages will get converted to MSIL. MSIL also allows the .NET Framework to JIT compile the assembly on the installed computer.
Qus13: Which method do you invoke on the Data Adapter control to load your generated data set with data?
Ans: The Fill() method.
Qus14: Can you edit data in the Repeater control?
Ans: No, it just reads the information from its data source.
Qus15: Which template must you provide, in order to display data in a Repeater control?
Ans: Item Template.
Qus16: How can you provide an alternating color scheme in a Repeater control?
Ans: Use the Alternating Item Template.
Qus17: What property must you set, and what method must you call in your code, in order to bind the data from a data source to the Repeater control?
Ans: You must set the Data Source property and call the Data Bind method.
Qus18: What base class do all Web Forms inherit from?
Ans:The Page class.
Qus19: Name two properties common in every validation control?
Ans: Control To Validate property and Text property.
Qus20: Which property on a Combo Box do you set with a column name, prior to setting the Data Source, to display data in the combo box?
Ans: Data Text Field property.
