Nested Interfaces in C#.NET

Introduction:

In an object oriented programming, a developer always get confusion about nested interfaces and its implementation. I would like to give a demonstration on this concept with sample example.

Interface with in an Interface like,

publicinterfaceIactions
{
    IdataObjectsGetDetails();
}

Where IdataObjects is, 

publicinterfaceIdataObjects
{
    intempId
    {
        get;
        set;
    }
    stringempName
    {
        get;
        set;
    }
    stringempAddress
    {
        get;
        set;
    }
}

Find the below screen for solution structure Design,



Implementation:

DataGenerator returns object, whichalways has Data Transfer type objects with help of IdataObjects Interfaces. It is the finest implementation for the nested Interfaces.

classProgram: Iactions
{
        publicDataObjects.IdataObjectsGetDetails()
        {
            returnnewDataGenerator
            {
                empId = 01,
                    empName = "maruthi",
                    empAddress = "Hyderabad"
            };
        }

You can call it with common scenarios.

staticvoid Main(string[] args)
{
    ProgramobjProgram = newProgram();
    varobjData = objProgram.GetDetails();
    Console.WriteLine(objData.empId.ToString());
    Console.WriteLine(objData.empName);
    Console.WriteLine(objData.empAddress);
    Console.Read();
}

Output: