c# - How to find an index of an element from a list<string>, an element contains a specific part -

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• get index of lines match linq 3 answers

i have list, contains.

1. house. 2. writing pen. 

now want know @ index string contains house(1.) how without loop? array.indexof not work not find element same match

an elegant way use findindex

list<string> examplelist = new list<string>(); examplelist.add("this house."); examplelist.add("i writing pen");  int index = examplelist.findindex(x => x.contains("house")); console.writeline(index); //0  index = examplelist.findindex(x => x.contains("pen")); console.writeline(index); //1 

findindex searches element matches conditions defined specified predicate, , returns zero-based index of first occurrence within list or portion of it.