Showing posts with label .Net Interview Question With Answer. Show all posts
Showing posts with label .Net Interview Question With Answer. Show all posts

Can multiple catch blocks be executed for a single try statement?

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No. Once the proper catch block processed, control is transferred to the finally block (if there are any).

What’s the .NET collection class that allows an element to be accessed using a unique key?

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HashTable.

How can you sort the elements of the array in descending order?

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By calling Sort() and then Reverse() methods.

What’s the difference between the System.Array.CopyTo() and System.Array.Clone()?

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The Clone() method returns a new array (a shallow copy) object containing all the elements in the original array. The CopyTo() method copie...
1 comment:

Can you store multiple data types in System.Array?

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Ans: No

# What’s the difference between System.String and System.Text.StringBuilder classes?

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System.String is immutable. System.StringBuilder was designed with the purpose of having a mutable string where a variety of operations ca...

what is the difference between Convert.toString and .toString ()?

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Just to give an understanding of what the above question means see the below code. int i =0; MessageBox.Show(i.ToString()); MessageBox.Show(...
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How to prevent my .NET DLL to be decompiled?

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By design, .NET embeds rich Meta data inside the executable code using MSIL. Any one can easily decompile your DLL back using tools like ILD...

What is CODE Access security?

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CAS is part of .NET security model that determines whether a piece of code is allowed to run and what resources it can use while running. Ex...

what is the difference between System exceptions and Application

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All exception derives from Exception Base class. Exceptions can be generated programmatically or can be generated by system. Application Exc...

What is the difference between VB.NET and C#?

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Well this is the most debatable issue in .NET community and people treat languages like religion. It is a subjective matter which language i...

What are Value types and Reference types?

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Value types directly contain their data that are either allocated on the stack or allocated in-line in a structure. So value types are actua...

(A) What are different types of JIT?

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JIT compiler is a part of the runtime execution environment. In Microsoft .NET there are three types of JIT compilers: • Pre-JIT: - Pre-JIT...

What is reflection?

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All .NET assemblies have metadata information stored about the types defined in modules. This metadata information can be accessed by mechan...

What is garbage collection?

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Garbage collection is a CLR feature, which automatically manages memory. Programmers forget to release the objects while coding ... Laziness...

What is serialisation and deserialisation?

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Serialization is the process of converting an object instance’s state into a sequence of bits that can then be written to a stream or some o...

What is serialisation and deserialisation?

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Serialization is the process of converting an object instance’s state into a sequence of bits that can then be written to a stream or some o...

How will you get result from two table in SqlDataReader ?

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Syntax: string str="Select * from table1;Select * from table2"; cmd.commandtext=str; dr=cmd.executereader();

What is the difference in using IP address and DNS name in the connection string while connecting to SQL database?

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When we are making connection string always use Server's IP address not the DNS name if we use IP address it will reduce the time taken ...

What are the differences between Datalist DataGrid and datarepeater ?

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DataList * Has table appearance by default * Has no auto format option * has no default paging & sorting options * can define separators...