Hi there,

In vb.net, if i inherit from a class then the first i generally do in a sub
classes contructor is MyBase.New(..);
Whats the pattern in C#? It seems to do these things automatically; I didn't
think C# did "anything" automatically?

Thanks

Richard

>In vb.net, if i inherit from a class then the first i generally do in a sub
>classes contructor is MyBase.New(..);
>Whats the pattern in C#?

The syntax is

public YourClass(...) : base(...)
{
}


>It seems to do these things automatically; I didn't
>think C# did "anything" automatically?

It only calls a parameterless constructor automatically. If you want
to use one with parameters you have to write the code for it.


Mattias

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Mattias Sjögren [C# MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
Please reply only to the newsgroup.

"Richard Coltrane" <(E-Mail Removed)> wrote in message
news:%(E-Mail Removed)...
> In vb.net, if i inherit from a class then the first i generally do in a
> sub classes contructor is MyBase.New(..);
> Whats the pattern in C#? It seems to do these things automatically; I
> didn't think C# did "anything" automatically?

In C# (and many other OOP languages), the default constructor for base
classes is always called automatically. You can use the ": base(...)"
syntax after the constructor declaration in a derived class if you need
access to a base constructor (from the immediate-ancestor class only) with a
specific parameter list.

Had I done any OOP in VB.NET I would have been very surprised to find that
it *didn't* do that. So I guess it all just depends on your perspective.


Pete

Richard Coltrane <(E-Mail Removed)> wrote:
> In vb.net, if i inherit from a class then the first i generally do in a sub
> classes contructor is MyBase.New(..);
> Whats the pattern in C#? It seems to do these things automatically; I didn't
> think C# did "anything" automatically?

Others have answered your immediate question, but see
http://pobox.com/~skeet/csharp/constructors.html for more information.

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Jon Skeet - <(E-Mail Removed)>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
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