Finding Index of List Items

See more:

C#

.NET

Hi, I am working on a web scraper application and the parsed HTML goes into a generic List<string>.

I want to allow functionality for searches, but I need the to get the index of the found item(s) to load the corresponding data from the rest of the lists with parsed HTML.

My list could contain multiple duplicates but each entity corresponds to the correct data, a change in index or wrong index will cause the rest of the lists to display the wrong data.

e.g - My List

red
green
red
red
red
red
red
green
green

int index = _Colours.FindIndex(x => x.Contains("green"));

^ This Returns -1 as the index.

How can I do this?

It works in a single instance however when in a Foreach loop, it returns values;

0
-1
-1
-1
-1
-1
0
0

etc..


Hope this makes sense and thank you in advance!.