Call constructor for parent class

Question

Hi .... I want to call constructor for a parent class ? How to call please explain anyone with an example ? Thanks.....

Jignesh Trivedi · Answer

hi agree with Vulpes. A constructor can use the base keyword to call the constructor of a base class. Please refer http://msdn.microsoft.com/en-us/library/ms173115%28v=vs.80%29.aspx http://stackoverflow.com/questions/12051/calling-base-constructor-in-c-sharp hope this help.

Smart Wave · Answer

You call the parent's constructor from the child's constructor. class Base { public Base(string sMessage) { //Code } } class Derived : Base { public Derived(string someParams) : base(a string to be sent to parent's constructor + someParams) { } } Also you'll find a good explanation here

Vulpes · Answer

You can only call the constructor for a base class from a derived class's constructor. This is done using the ': base()' syntax. For example: using System; class Parent { public Parent() { Console.WriteLine(Hello from Parent's constructor which takes no parameters); } public Parent(string message) { Console.WriteLine(message); } } class Child : Parent { public Child(string message) : base(message) { } public Child() // calls base class's parameterless constructor automatically { } } class Test { static void Main() { Child c = new Child(Hello from Parent's constructor which takes a string parameter); Child c2 = new Child(); Console.ReadKey(); } } Notice that the base class's parameterless constructor still gets called automatically even if you don't specify the ': base()' syntax.