C# Interface for multiple classes
Solution 1
You don't inherit an Interface you implement it. There's no need to make a class partial to add an interface to it.
An interface is a contract that the class subscribes to saying that it will honour the methods described in the interface and will implement them appropriately. For your scenario you'd create a single interface and implement it in your classes, you can then pass the instances of the various accessor classes as instances of the interface.
For example:
public interface IDataProvider
{
void LoadData();
}
The data providers would then look as follows:
public class MyDataProvder1 : IDataProvider
{
// Some methods
// Must implement LoadData
public void LoadData()
{
// Do something
}
}
public class MyDataProvder2 : IDataProvider
{
// Some methods
// Must implement LoadData
public void LoadData()
{
// Do something
}
}
You can then pass the objects as IDataProvider as follows:
IDataProvider DataProviderA = new MyDataProvider1();
IDataProvider DataProviderB = new MyDataProvider2();
// Call function that expects an IDataProvider
DoSomething(DataProviderA);
DoSomething(DataProviderB);
...
public void DoSomething(IDataProvider DataProvider)
{
DataProvider.LoadData();
}
Hopefully that clears it up for you.
Solution 2
I think you are approaching this incorrectly.
When you make an interface, you're making a contract for those classes. Think of it as "my class will act as a IMyInterface".
If all of your classes have a common usage scenario, then a single, common interface may be appropriate (IDataProvider
, given the class names..?).
Comments
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GigaPr over 1 year
I have a data provider project to access the database. this is composed by various classes (PersonDataProvider, JobDataProvider ...) I want to create an Interface. Do I have to create an Interface for each class? I was tempted to create one interface and than inherit on all the classes. This involves making all the projects classes partial and change the classes name.......But i think is not the best solution. Any suggestion?