ASP.NET Interview Questions and Answers (1544) - Page 15

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What is capacity and length for StringBuilder ?

By specifying capacity you can indicate number of characters the instance object of stringbuilder can hold while the length is the character count of the string the stringbuilder holds.
Specifying lesser capacity and longer string will make capacity to get expanded to accommodate the supplied string. But specifying higher capacity and lesser length will shorten the string content.
Unless specified, the default capacity of the stringbuilder is 16.

    Dim sb As New StringBuilder("Hi", 5) ' initial capacity is set to 5

        Response.Write(sb.Capacity) ' will print 5

        Response.Write(sb.Length) ' will print 2

        sb.Append(" testing")

        Response.Write(sb.Capacity) ' will print 10

        Response.Write(sb.Length) ' will print 10

        sb.Length = 5

        Response.Write(sb) ' will print hi te

can we use session variable in App_code Class page ?

Yes.
By using "HttpContext.Current.Session("VarName") ", we can use current session variable in App_code Class page

How to redirect user to secure connection ?

To redirect user to https(to a secure connection), you can define uri scheme to UriSchemeHttps.

UriBuilder testuri = new UriBuilder(Page.Request.Url);

testuri.Scheme = testuri.UriSchemeHttps;

How will you make strings with TitleCase ?

With dynamic pages, sometimes you need to create titles dynamically. At such stage you can not go back to check whether they are stored in proper Title case or not. To make this task happen you can use string class provided toUpper() and toLower() methods but that would be much time consuming and tedious job. You can use, titlecase() method to make it single linear task.

Dim strTest As String = "testing title case"

strTest = CultureInfo.CurrentCulture.TextInfo.ToTitleCase(strTest.ToLower()) ' will result Testing Title Case

How does ASP.NET store SessionIDs by default?

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

Using which property you can check on the server whether validators controls are satisfied or not?

The answer is Page.IsValid . Always ensure that you check Page.IsValid before doing any kind of operation when working with Validator Controls.

The capacity of the stringbuilder get increased,…

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

How can we make file hidden ?

With C# or VB, we just need to set attribute of file as “Hidden” to make it hidden.

f.Attributes = FileAttributes.Hidden ‘f is New FileInfo(filePath)

Elements of jagged array are of…

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

What is the difference between UniqueID and ClientID?

Well, both the properties are associated with asp.net control. The difference is Unique ID has '$' (Dollar) sign and Client ID adds '_' (hyphen) to the control, if master page is used.

Let's say you have placed a text box called 'txtName' in content place holder. So client ID will be ct100_ContentPlaceHolder1_txtName where Unique ID will be ct100$ContentPlaceHolder1$txtName.

ClientID is used to access control in Java Script where using Unique ID you can make a post back using java script __doPostBack() function.

Thanks,
Virendra Dugar

Is it possible to read Web.config or Global.asax files from browser?

No. It is not possible . As Machine.Config file has configuration settings which has entries that maps to CONFIG files, ASAX file with an HTTP handler "HttpForbiddenHandler", which prevents to retrieve the associated file.

Can I make viewstate enabled for controls where Enableviewstate of the container page is set to false?

No.
You can set it to true or false as per your requirement but in fact it will not have any effect to the controls. Because viewstate in ASP.NET has hierarchical nature. Hence, following code will not work if you have set EnableViewState = false; for page.

protected void Page_Load(object sender, EventArgs e)

{

txtTest.EnableViewState = true;

}

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ASP.NET Interview Questions and Answers (1544) - Page 15

What is capacity and length for StringBuilder ?

can we use session variable in App_code Class page ?

How to redirect user to secure connection ?

How will you make strings with TitleCase ?

How does ASP.NET store SessionIDs by default?

Using which property you can check on the server whether validators controls are satisfied or not?

The capacity of the stringbuilder get increased,…

How can we make file hidden ?

Elements of jagged array are of…

What is the difference between UniqueID and ClientID?

Is it possible to read Web.config or Global.asax files from browser?

Can I make viewstate enabled for controls where Enableviewstate of the container page is set to false?

Can you find label placed in footer template of repeater in itemdatabound event of the same?

What is PLINQ

Client Sertificate is a collection of ___________ ? (Request / Response / Server)

What is the size of the session ID ?

What Type of Processing model asp.net simulates ?

Which class can be used to perform data type conversion between .NET data types and XML types?

What is the maximum number of cookies that can be allowed to a web site

Where are shared assemblies stored?

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