121⟩ When during the page processing cycle is ViewState available?
After the Init() and before the Page_Load(), or OnLoad() for a control.
ASP Programming
Home Microsoft .Net Technologies ASP Programming
“Learn ASP Programming by Interview Questions and Answers.”
194 ASP Programming Questions And Answers
122⟩ What namespace does the Web page belong in the .NET Framework class hierarchy?
System.Web.UI.Page
123⟩ Where do you store the information about the users locale?
System.Web.UI.Page.Culture
124⟩ Whats 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.
125⟩ Suppose you want a certain ASP.NET function executed on MouseOver for a certain button. Where do you add an event handler?
Add an OnMouseOver attribute to the button. Example: btnSubmit.Attributes.Add("onmouseover","someClientCodeHere();");
126⟩ What data types does the RangeValidator control support?
Integer, String, and Date.
127⟩ What type of code (server or client) is found in a Code-Behind class?
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.
128⟩ Should user input data validation occur server-side or client-side? Why?
All user input data validation should occur on the server at a minimum. Additionally, client-side validation can be performed where deemed appropriate and feasable to provide a richer, more responsive experience for the user.
129⟩ What is the difference between Server.Transfer and Response.Redirect? Why would I choose one over the other?
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.
130⟩ Can you explain the difference between an ADO.NET Dataset and an ADO Recordset?
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.
131⟩ What is the Global.asax used for?
The Global.asax (including the Global.asax.cs file) is used to implement application and session level events.
132⟩ What are the Application_Start and Session_Start subroutines used for?
This is where you can set the specific variables for the Application and Session objects.
133⟩ 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. Example: With a base class named Employee, a Manager class could be derived from the Employee base class.
134⟩ What is an assembly?
Assemblies are the building blocks of the .NET framework. Overview of assemblies from MSDN
135⟩ Describe the difference between inline and code behind.
No, it just reads the information from its data source.
136⟩ 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?
You must set the Data Source property and call the Data Bind method.
137⟩ What base class do all Web Forms inherit from?
The Page class
138⟩ Name two properties common in every validation control?
Control to validate property and Text property
139⟩ 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?
Data Text Field property
140⟩ Which control would you use if you needed to make sure the values in two different controls matched?
Compare Validator control.
