CODEWITHSUNDEEP
c#inheritance
Avais
Avais

Reputation: 119

how to make one control to show a property of any derived class in c#?

this might be a easy question but I am struggling with it.

I have two classes that are derived from a base class

class Base
{
  public int BaseProperty;
  ...
}

class A: Base
{
public int Property_derived;
...
}

Class B: Base
{
public int Property_derived;
...
}

Now I have a UI form, that got a textbox that should display the property of derived class(I assure the number and datatypes of properties of all derived classes would be same) I have done something like:

textbox1.text = objectA.Property_derived;

how do I change it to make it more generic like:

textbox1.text = objecttypedoesntmatter.Property_derived;

so that I should be able to use the same user interface for any derived class. Any help much appreciated. Many Thanks

Upvotes: 0

Views: 78

Answers (1)

Avner Shahar-Kashtan
Avner Shahar-Kashtan

Reputation: 14700

What you need to do is define your Property_derived in the base class, and thus have it as part of the shared contract of all derived classes. Polymorphism, a property of inheritance, will call the derived, overridden property. Note, though, that this will work for a property, not a field:

class Base
{
   public virtual int MyProperty {get { return 1;} }   
}

class A: Base
{
   public override int MyProperty { get { return 5; } }
}

class B: Base
{
   public override int MyProperty { get { retun 7; } }
}

Upvotes: 5

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