How do I locate the last occurrence of string in a string?

Is there a function which would search for the last occurrence of a certain substring and return the index of it?

For example, if I want to search for the last occurrenc开发者_如何学JAVAe of the char '\' in a file path 'C:\Program Files\Microsoft'.

string.LastIndexOf

You look for

 "somesthing".LastIndexOf("char/string");

You can use: string.LastIndexOf(String)