c# - Modifying a property to automatically resolve "Cannot modify the return value" error -
i'd know if there's built-in or easy implement way handle "cannot modify return value because not variable" problem. let's have class: myclass { rectangle _rect = new rectangle(1, 2, 3, 4); public rectangle rect { { return _rect; } set { _rect = value; } } } this i'm trying do: rect.width += 20; // , error pops the usual approach instead: rect = new rectangle(rect.x, rect.y, rect.width + 20, rect.height); but there has way automate it, right? , don't mean adding bunch of properties myclass rect_width , such (because have 9 rectangles in real class implementation, , bad), make line of code work: rect.width += 20; there's nothing can circumvent problem, since rectangle-class immutable , that's way intended work. however, expose method encapsulates creation of new rectangles: myclass { rectangle _rect; public rectangle rect { { return _rect; } set { _rect = value; } } public void addwidth(int...