Constructors

[AJ123]

I am looking at orgainsing a custom constructor in one of my classes so that it calls through to my default constuctor. I understand this is done as follows: Public TestClass() { //Default Constructor } Public TestClass(int testValue) :this() { } The problem is i also want to call a base constructor, so i effectively want : Public TestClass(int testValue) :base(int testValue2) : this() Which is not valid syntax. Is there an easy way of capturing this in C#? Cheers AJ

[Colin Angus Mackay]

AJ123 wrote:

Is there an easy way of capturing this in C#?

You put the reference to the base on the default constructor. This chains the constructors together. For example:

class Program
{
    static void Main(string\[\] args)
    {
        B b = new B(12);
    }
}

class A
{
    public A()
    {
        Console.WriteLine("I'm in the constructor of A");
    }
}

class B : A
{
    public B() : base()
    {
        Console.WriteLine("I'm in the constructor of B");
    }

    public B(int someValue) : this()
    {
        Console.WriteLine("I'm in the constructor of B({0})", someValue);
    }
}

The output is

I'm in the constructor of A
I'm in the constructor of B
I'm in the constructor of B(12)

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[AJ123]

Thanks Colin, seems obvious now. I was actually wanting the custom constructor of class B to call a different base class constructor than B's default constructor. Which is just been plain silly... :)