Type Conversion

sathish

12y1.5kVisual Basic .NET

Hi,

Please give me some simple example for type conversion between two classes in C#

Thanks in advance

Sathish

4 Replies

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sathish12y ago
Got some idea about this conversion... Thanks Guys
0
Eric Zimmerman12y ago
As stated previously, it would be best if you clarified the question.

One thing that comes to mind is base class + several derivatives...

e.g.
class AnimalBase;
class Donkey : AnimalBase
class Tiger : AnimalBase

void SomeFunction(AnimalBase animal)
{
if (animal is Tiger)
{
Tiger tiger = animal as Tiger;
tiger.DoSomethingTigerish();
}
}
0
Vulpes12y ago
Apart from user defined conversions which are quite rare in my experience, the only type conversions allowed between classes are where one class is a parent (or remoter ancestor) of the other class.

For example:

class Parent
{
}

class Child: Parent
{
}

Parent p = new Child(); // implicit conversion from Child to Parent
Child c = (Child)p; // explicit conversion from Parent to Child
object o = new Child(); // implicit conversion from Child to ancestor class
Child c2 = (Child)o; // explicit conversion from ancestor class to Child

Note that:

1. An explicit conversion requires a cast but an implicit conversion doesn't though you can you use one if you like.

2. For an explicit conversion to work, the parent (or ancestor) variable must actually refer to an object of the child class.

3. In the case of an implicit conversion, you can only access those members of the child class which have been inherited from the parent (or ancestor class) through a variable of the latter type.

3. These conversions don't change the object in any way. They merely allow it to be viewed as if it were an object of the type to which it's been converted.
0
Jignesh Trivedi12y ago
hi,
what do you mean by type casting between classes?
are you saying or looking solution for convert one class object to other class object?
so i think it is not possible you have to cast it property by property or you can use reflection.
hope this will help you.
0