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What are the different ways of achieving zipping in .Net?

Posted By :Jean Paul     Posted Date :January 30, 2011    Points :15   Category :.NET Framework 
We have the following options:
- GZipStream class for compressing stream (not multiple file/folder)
- J# Zip
- ZipPackage class in latest f/w
- DotNetZip (open source)
- SharpZipLib

You can also find related Interview Question to What are the different ways of achieving zipping in .Net?  below: 

What is serialization in .NET? What are the ways to control serialization?

Serialization is the process of converting an object into a stream of bytes. Deserialization is the opposite process of creating an object from a stream of bytes. Serialization/Deserialization is mostly used to transport objects (e.g. during remoting), or to persist objects (e.g. to a file or database).Serialization can be defined as the process of storing the state of an object to a storage medium. During this process, the public and private fields of the object and the name of the class, including the assembly containing the class, are converted to a stream of bytes, which is then written to a data stream. When the object is subsequently deserialized, an exact clone of the original object is created.
Binary serialization preserves type fidelity, which is useful for preserving the state of an object between different invocations of an application. For example, you can share an object between different applications by serializing it to the clipboard. You can serialize an object to a stream, disk, memory, over the network, and so forth. Remoting uses serialization to pass objects "by value" from one computer or application domain to another.
XML serialization serializes only public properties and fields and does not preserve type fidelity. This is useful when you want to provide or consume data without restricting the application that uses the data. Because XML is an open standard, it is an attractive choice for sharing data across the Web. SOAP is an open standard, which makes it an attractive choice.

There are two separate mechanisms provided by the .NET class library -
XmlSerializer and SoapFormatter/BinaryFormatter. Microsoft uses XmlSerializer for Web Services, and uses

SoapFormatter/BinaryFormatter for remoting. Both are available for use in your own code. (More...)

Describe ways of cleaning up objects.

The run time will maintain a service called as garbage collector.
this service will take care of deallocating memory corresponding to
objects.it works as a thread with least priority.when application
demenads for memory the runtime will take care of setting the high
priority for the garbage collector,so that it will be called for execution
and memory will be released.the programmer can make a call
to garbage colector by using GC class in system name space. (More...)

What are the ways available in SQL Server to execute SQL statements?


SQL Server uses different ways to execute SQL statements which are listed below.

1)Single SQL statement processing
2)Batch processing
3)Stored procedure and trigger execution
4)Execution plan caching and reuse
5)Parallel query processing


You are working with a DataSet and want to be able to display data, sorted different ways. How do you do so?

Select the correct answer.

1. Use the Sort method on the DataTable object.
2. Use the DataSet object's Sort method.
3. Use a DataView object for each sort.
4. Create a DataTable for each sort, using the DataTable object's Copy method, and then Sort the result

Correct Answer is :
3. Use a DataView object for each sort. (More...)

What are the different ways a method can be overloaded?

Different parameter data types, different number of parameters, different order of parameters can be used to overload a method (More...)

How many ways you can display text using Silverlight?

Silverlight supports displaying static pre formatted text that is comprised out of glyph elements and also dynamic text that uses TextBlock. With glyphs, one needs to position the characters individually while TextBlock supports simple layout. (More...)

In how many ways you can deploy Application in asp.net?

1)XCopy deployment
2)PreCompiled deployment
3)SetUp Program deployment (More...)

In how many ways you can deploy an Asp.Net Application?

1)XCopy deployment
2)PreCompiled deployment
3)SetUp Program deployment (More...)

What are the ways to deploy an assembly?

An MSI installer, a CAB archive, and XCOPY command. (More...)

What are the built in ways to backup a SharePoint install?

Using central administration and the stsadm command you can take backup (More...)

What are the ways to deploy an assembly?

We can do by any of the following methods
MSI installer
CAB archive
ZCOPY command (More...)

How many ways return rows from one table not in another table?

There are at least 5 ways to return data from one table which is not in another table. Two of these are SQL Server 2005 and greater only




4)OUTER APPLY (2005+)

5)EXCEPT (2005+)


What are ways to create input forms for workflow ?

1. You can create your forms by using custom application pages, which are standard .aspx pages deployed to run out of the _layouts directory. ( disadv: lot of code required when compared to Infopath approach)
2. Using Microsoft Office InfoPath 2007 (disadv: picks up a dependenct on MOSS, i.e. it cannot run in a standalone WSS environment)

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