Taking what you have and Generating a class from VS2010
internal class PhoneNumber
{
private string a;
private string m;
private string l;
public PhoneNumber(string a, string m, string l)
{
// TODO: Complete member initialization
this.a = a;
this.m = m;
this.l = l;
}
}
class BlockedNumber : PhoneNumber
{
public BlockedNumber(string a, string m, string l)
: base(a, m, l) { }
}
This code compiles just fine so just like Yuriy stated the issue must be somewhere else.
solved C# Inheritance Issue – Does not contain a constructor that takes 0 arguments