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c#delegates
Brett Ryan
Brett Ryan

Reputation: 28265

Are there commonly used delegates available in the standard class libraries?

I find myself quite often writing delegates that take common arguments or return types. As such I often find myself using delegates like this:

public delegate void CommonVoidEmptyDelegate();
public delegate void CommonVoidDelegate<TParam>(TParam p);
public delegate void CommonVoidParamDelegate<TParam>(params TParam[] p);
public delegate TReturn CommonEmptyDelegate<TReturn, TParam>(TParam p);
public delegate TReturn CommonParamDelegate<TReturn, TParam>(params TParam[] p);

Instead of me defining these in each project I would like to know if there's something common in the framework that I can use.

Upvotes: 1

Views: 72

Answers (3)

dcastro
dcastro

Reputation: 68710

You can use Action, Action<T> for the first two, and Func<T, TResult> for the third one. There is no standard delegate for the 3rd and 5th delegates.

Upvotes: 3

Ric
Ric

Reputation: 13248

Converting comment to answer:

just use Func and Action delegates. They provide a great deal of flexibility.

Upvotes: 3

AKX
AKX

Reputation: 169268

You're probably looking for the Action and Func families of delegates.

Upvotes: 7

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