Getting index of duplicate items in a list in c#

Question

I am looking for a way to get the index of all elements in a list from a keyword search within the list. So for example my list has:

Hello World
Programming          


        

Answer 1

A little ugly but will work:

    var searchInList = new List();

//Populate your list

    string stringToLookUp= "Hello world";
    var foundHelloWorldIndexes = new List();

    for (int i = 0; i < searchInList.Count; i++)
        if (searchInList[i].Equals(stringToLookUp))
            foundHelloWorldIndexes.Add(i);