Question

I have a class that takes an action in it’s constructor.

Example:

public CustomClass(Action<Path> insert)
{

  // logic here...

}

I currently instantiate this class using the following line of code:

var custom = new CustomClass((o) => LayoutRoot.Children.Add(o));

I want to modify the custom class to include an additional constructor, such as the following:

public CustomClass(Action<Path, TextBlock> insert)
{

  // logic here...

}

However, my knowledge of lambda expressions is pretty basic, so I can’t figure out how to instantiate the custom class, passing two parameters in the action to the new constructor.

Any help would be greatly appreciated.

Thanks.

Answer 1

In order to pass 2 parameters to the action, just define the insert action as an Action<T,T2> and when you call it do it like this:

var custom = new CustomClass((o,u) => {LayoutRoot.Children.Add(o); somethingElse(u)});