Sunday, October 28, 2007

How many classes can a single .NET DLL contain?

It can contain many Classes./p>

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.

Which control would you use if you needed to make sure the values in two different controls matched?

CompareValidator Control

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

What does WSDL stand for?

(Web Services Description Language)

True or False: A Web service can only be written in .NET?


What is the transport protocol you use to call a Web service?

SOAP is the preferred protocol.

What tag do you use to add a hyperlink column to the DataGrid?


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

Name two properties common in every validation control?

ControlToValidate property and Text property.

What base class do all Web Forms inherit from?

The Page class.

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.

How can you provide an alternating color scheme in a Repeater control?

Use the AlternatingItemTemplate

Which template must you provide, in order to display data in a Repeater control?


Can you edit data in the Repeater control?

No, it just reads the information from its data source

Which method do you invoke on the DataAdapter control to load your generated dataset with data?

The .Fill() method

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.

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.

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.

Whats an assembly?

Assemblies are the building blocks of the .NET framework.

Overview of assemblies from MSDN

Can you explain what inheritance is and an example of when you might use it?

When you want to inherit (use the functionality of) another class. Base Class Employee. A Manager class could be derived from the Employee base class.

If I’m developing an application that must accommodate multiple security levels though secure login and my ASP.NET web application is spanned across three web-servers (using round-robin load balancing) what would be the best approach to maintain login-in state for the users?

Maintain the login state security through a database.

Can you give an example of what might be best suited to place in the Application_Start and Session_Start subroutines?

This is where you can set the specific variables for the Application and Session objects.

Can you explain the difference between an ADO.NET Dataset and an ADO Recordset?

· 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.

What is the difference between Server.Transfer and Response.Redirect? Why would I choose one over the other?

Server.Transfer is used to post a form to another page. Response.Redirect is used to redirect the user to another page or site.

What does the "EnableViewState" property do? Why would I want it on or off?

It enables the viewstate on the page. It allows the page to save the users input on a form.

Should validation (did the user enter a real date) occur server-side or client-side? Why?

Client-side. This reduces an additional request to the server to validate the users input.

What type of code (server or client) is found in a Code-Behind class?

Server-side code.

Explain the differences between Server-side and Client-side code?

Server-side code runs on the server. Client-side code runs in the clients’ browser.

What data type does the RangeValidator control support?

Integer,String and Date.

Suppose you want a certain ASP.NET function executed on MouseOver over a certain button. Where do you add an event handler?

It’s the Attributesproperty, the Add function inside that property. So btnSubmit.Attributes.


What’s a bubbled event?

When you have a complex control, like DataGrid, writing an event processing routine for each object (cell, button, row, etc.) is quite tedious. The controls can bubble up their eventhandlers, allowing the main DataGrid event handler to take care of its constituents.

What’s the difference between Codebehind="MyCode.aspx.cs" and

CodeBehind is relevant to Visual Studio.NET only.

Where do you store the information about the user’s locale?


Where does the Web page belong in the .NET Framework class hierarchy?


What methods are fired during the page load?

Init() - when the page is instantiated, Load() - when the page is loaded into server memory, PreRender() - the brief moment before the page is displayed to the user as HTML, Unload() - when page finishes loading.

What’s the difference between Response.Write() and Response.Output.Write()?

Ans > The latter one allows you to write formatted output.

Technorati Tags: ,

Describe the role of inetinfo.exe, aspnet_isapi.dll andaspnet_wp.exe in the page loading process.

inetinfo.exe is the Microsoft IIS server running, handling ASP.NET requests among other things.When an ASP.NET request is received (usually a file with .aspx extension),the ISAPI filter aspnet_isapi.dll takes care of it by passing the request to the actual worker process aspnet_wp.exe.

Technorati Tags: , ,