cast class into another class or convert class to another

Question

my question is shown in this code

I have class like that

public class  maincs
{
  public int a;
  public int b;
  public int c;
  public int d; 
}
         


        

Answer 1

You can provide an explicit overload for the cast operator:

public static explicit operator maincs(sub1 val)
{
    var ret = new maincs() { a = val.a, b = val.b, c = val.c };
    return ret;
}

Another option would be to use an interface that has the a, b, and c properties and implement the interface on both of the classes. Then just have the parameter type to methoda be the interface instead of the class.