c# - i dont understand what "protected void Page_Load" is -

im learning computer science , in cs files have line of code not understand purpose for...i understood waits page load or void , protected about?

protected void page_load 

is piece of code

protected access modifier , means access limited containing class or types derived containing class.

void return type of method , means it not return anything.

as mentioned other page_loadre event method triggered when current page loaded method doesn't return need accessed other classes other class resides. (sometimes may need change modifier).

here may have general access modifiers