Dot net Interview Question and Answers

Finalize:  - Automatically done by garbage collector  to clean the resource memory.

Dispose: - Force the user to dispose objects.

Boxing:

Implicit conversion of any value type to the type object.
Value types are stored on stack.
Reference or object type are stored on heap.

Unboxing:

Explicit conversion from object type to value type.

You can see the metadata information through reflection mechanism.

Ability to inspect and manipulate programs elements at runtime.

It’s the process of runtime type discovery.

Reflection Services:

Load an assembly at runtime.
Enumerate members of a type.
Instantiate a new object.
Execute the members of an object.
Find out the information about a type .
Find out the information about a assembly
Inspect custome attributes applied to a type.
Create and compile new assembly.

Session is used to store user details particularly userid and user information so once you set the information  in session you can get the data anywhere in the project .


Syntax:

Session[“username”] = “Venkat”;

Create Procedue <procedureName>
(
Your parameter
)
As
Begin
< your Sql Statement>
End

Guid getnewID = Guid.NewGuid();

TimeStamp:

Size – 8 bytes.
Note based on system date or time
To track the operation in tables on the database level.

Uniqueidentifier

16 – bytes.
Value is based on the computer MAC Addresss and system datetime.
It remains unique in any system in the world.