Can someone explain what this piece of code does? string SectionID = ctrl5.ID.Substring(1);

Question

I underastand that the first bit is assigment of value to variable but "ctrl5.ID.Substring(1);" I am unsure about.

This has been copied from a web app we have, I need to know how the sectionid variable is getting the value it gets.

string SectionID = ctrl5.ID.Substring(1);

TIA

Sam Hobbs · Answer

I assume that ctrl5 is a control such as a TextBox control. Note that all HTML elements have ids or at least each element can have an id. So ctrl5.ID is the HTML element's id for the ctrl5 control. Since Substring is zero-based Substring(1) will be the entire id string except the first character.