Event handlers with multiple arguments

From C# 7.0 on, named tuple types make it possible to simplify the declaration and use of event handlers with multiple parameters.

	public class Example
	{
	public event EventHandler<string> PassString;
	public event EventHandler<( Keys key, int x, bool modified )> PassMultipleValues;
	private void NotifySubscribers()
	{
	PassString?.Invoke( this, "some text" );
	PassMultipleValues?.Invoke( this, ( Keys.Up, 1, true ) );
	}
	}
	...
	public class Main
	{
	private Example _example = new();
	public Main()
	{
	_example.PassString += OnPassString();
	_example.PassMultipleValues += ( _, e ) => SomeOtherMethod( e.key, e.x, e.modified );
	}
	private void OnPassString( object sender, string text )
	{
	}
	}

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