ASP.NET Interview Questions and Answers (1544) - Page 74

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Which Properties of the GridView Control is used to display any user defined text when there is no data on the Gridview?

NOTE: This is objective type question, Please click question title for correct answer.

Which control does not have any event?

NOTE: This is objective type question, Please click question title for correct answer.

Which statements are correct about DetailsView control?

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Which control is used for showing summary messages to users?

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How to validate a DropDownList or ListBox using RequiredfieldValidator control?

RequiredfieldValidator has a InitialValue property ,by which we can validate dropdownlist,listbox control.
We have to set InitialValue property to 0 and dropdownlist control also has 0 value at first index as -Select- text.

Which method is used to update the UpdatePanel from server side?

Update() method is used to update an updatepanelcontrol from server-side. But make sure that, we have to se updatemode property to conditional in updatepanel definition.

What is the difference between Session.Abandon() and Session.Clear()?

The major difference is that if we call Session.Abandon() , Session_End will be fired for InProc mode, and in the next request,Session_Start will be fired. Whereas Session.Clear() just clears the session data without killing it.

How to create a folder in Asp.Net?

Using System.IO Namespace;



string path = @"c:\file1";  

    try   

    {  

        // check whether the directory exists.  

        if (Directory.Exists(path))   

        {  

            Response.Write("That path exists already.");  

            return;  

        }  

        // Try to create the directory.  

        DirectoryInfo di = Directory.CreateDirectory(path);  

        Response.Write("Directory create successfully at " + Directory.GetCreationTime(path));  

    }   

    catch(Exception ex)  

    {  

        Response.Write (ex.Message );  

    }

How to check whether folder is present in the drive or not?

We have Exist static method of File class, which comes under System.IO namespace, so we can check whether folder is present in the drive or not.

Exist returns True/False values.


Using System.IO;

if(File.Exist("Path_of_folder"))

{

   Response.Write("File Exists");

}

else

{

   Response.Write("File does not Exist");

}

Your company has assigned task to assess its web application as a user for finding out problematic area in the application. In this task you have to review site from outside of company network and put more focus on SEO and accessibility of application. which tool would you use to perform this task?

NOTE: This is objective type question, Please click question title for correct answer.

Which DLL translates XML to SQL in IIS?

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We can manage states in Asp.Net Application using?

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Which is used to validate complex string pattern like an e-mail address in Asp.Net?

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which is the first event which gets triggers or fires in an Aspx Page?

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Your company has assigned one task to you in which you have to improve ASP.Net web application ranking in search engine results. In this task you have to spend your most of time in a section which is highly interactive, with extensive mouse-over colour and background change. Without looking at the code, what is the most likely reason for ranking low in search engine results?

NOTE: This is objective type question, Please click question title for correct answer.

Which method of FormsAuthentication class you can use to register the authentication cookies which you can use throughout the user’s visit?

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Which methods of the RoleProvider class determine whether a user is assigned a role or set of roles

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You are going to developed three layered web application using ASP.Net. In which, you need to use WIF(window identity foundation) to crate a custom token.To complete this task, which of the following class you need to overRide?

NOTE: This is objective type question, Please click question title for correct answer.

What is the difference between view state and a hidden field in Asp.Net?

Actually both are used to store the value during the Post-back in Asp.Net.But there are some differences between them.

View State - We are not able to change the value by Client side code i.e java script.
Hidden Field - It's possible to change value by Client side code.

View State - We can store more than one value like Datatable , Dataset, Collections and Object.
Hidden Field - We can store only one value in hidden field.

How To Create a Link Without having Underline on it?

By default,Web browser will underline every link on the page.If we want to remove line,the simplest solution is to use HTML code like this:-

<a style = "text-decoration:none;" href = "http://www.dotnetfunda.com">Dot Net Funda</a>

text-decoration:none style property will remove line.

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