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HttpApplicationState class stores data in
Posted By :
Syed Shakeer Hussain
Posted Date :
November 21, 2009
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HttpApplicationState class stores data in
Which class can be used to perform data type conversion between .NET data types and XML types?
AddNew() method of BindingSource Class will add a blank row or with some data?
A Blank Row with no data will be added
Differentiate between instance data and class data?
Class data in terms of static class is the data that particular class holds in its structure.
Instances can refer to different objects of the same class that hold different values using the same class structure in memory heap.
Which namespace is the base class for .net Class library?
What is the difference between a Struct and a Class?
The struct type is suitable for representing lightweight objects such as Point, Rectangle, and Color. Although it is possible to represent a point as a class, a struct is more efficient in some scenarios. For example, if you declare an array of 1000 Point objects, you will allocate additional memory for referencing each object. In this case, the struct is less expensive.
When you create a struct object using the new operator, it gets created and the appropriate constructor is called. Unlike classes, structs can be instantiated without using the new operator. If you do not use new, the fields will remain unassigned and the object cannot be used until all of the fields are initialized.
It is an error to declare a default (parameterless) constructor for a struct. A default constructor is always provided to initialize the struct members to their default values.
It is an error to initialize an instance field in a struct.
There is no inheritance for structs as there is for classes. A struct cannot inherit from another struct or class, and it cannot be the base of a class. Structs, however, inherit from the base class Object. A struct can implement interfaces, and it does that exactly as classes do.
A struct is a value type, while a class is a reference type.
Can we call a base class method without creating instance?
Its possible If its a static method.
Its possible by inheriting from that class also.
Its possible from derived classes using base keyword.
What is Private Constructor? and it's use? Can you create instance of a class which has Private Constructor?
When a class declares only private instance constructors, it is not possible for classes outside the program to derive from the class or to directly create instances of it. (Except Nested classes)
Make a constructor private if:
1) You want it to be available only to the class itself. For example, you might have a special constructor used only in the implementation of your class' Clone method.
2) You do not want instances of your component to be created. For example, you may have a class containing nothing but Shared utility functions, and no instance data. Creating instances of the class would waste memory.
What event class gives a description about the type of a mousebutton pressed ?
How can you prevent a class from inheriting?
Using Sealed keyword
What is the difference between interface and abstract class ?
a class may inherit several interfaces, a class may inherit only one abstract class
What is the default access specifier for a top level class which are not nested into other class?
When do you need to specify an external data source by using a linked server?
When you need to access a different instance.
What is Method used to bind the data into gridview ?
DataBind() Method used to bind the data into gridview
What is the .NET that allows the retrieval of data by a unique key?
HashTable is the .NET collection class that allows the retrieval of data by a unique key
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