Question

I have the following hierarchy:

class Base {   public Base(string sMessage)   {      //Do stuff   } }  class Derived : Base {   public Derived(string someParams)   {     string sMessage = 'Blah ' + someParams;     //Here I want to call the base constructor    //base(sMessage);    }  } 

Answer 1

You have to call the base class constructor prior to the derived class constructor’s body.

class Derived : Base {   public Derived(string someParams)     : base('Blah ' + someParams)   {    }  }