c# - How to define variable as lambda function -

c# - How to define variable as lambda function -

(lambda function may or may not i'm looking for, i'm not sure)

essentially i'm trying accomplish this:

int areaofrectangle = (int x, int y) => {return x * y;};

but gives error: "cannot convert lambda look type 'int' because not delegate type"

the more detailed problem (that has nil question, know ask) is:

i have several functions branch overridden onlayout , several more functions each of depend on. readability , set precedent later expansion, want functions branch onlayout similar. that, need compartmentalize them , reuse naming much possible:

protected override void onlayout(layouteventargs levent) switch (layoutshape) { case (square): dosquarelayout(); break; case (round): doroundlayout(); break; etc.. etc.. } void dosquarelayout() { part layershape = (int layer) => { //do calculation homecoming new region(math.ceiling(math.sqrt(itemcount))); } int gradientangle = (int itemindex) => { //do calculation homecoming ret; } //common-ish layout code uses layershape , gradientangle goes here } void doroundlayout() { part layershape = (int layer) => { //do calculation graphicspath shape = new graphicspath(); shape.addellipse(0, 0, width, height); homecoming new region(shape); } int gradientangle = (int itemindex) => { //do calculation homecoming ret; } //common-ish layout code uses layershape , gradientangle goes here }

all examples find right have declare delegate know i've seen 1 liner lambda declaration...

try func<int, int, int> areaofrectangle = (int x, int y) => { homecoming x * y;}; instead.

func works as delegate

look here more info on lamda look usage

this reply related , has info

if you're doing readability , going reproduce same functions layershape , gradientangle, might want have explicit delegates functions show in fact same. thought.

c# lambda