Filter array of string and get only matching ones with searched string

Question

I have an array of string and I want to get back from it a filtered array that contains only those strings that match the searched string.

string[] myValues = {"School.Report1", "School.Report2", "School.Report3", "House.Report1", "House.Report2"};
string myFilter = "School";
string[] filteredValues = myValues.Filter(myFilter); // or something similar

filteredValues must contains only: "School.Report1", "School.Report2", "School.Report3".

-- EDIT --

I prefer a non-LINQ approach if possibile. Otherwise I know that this question can be answered with the solution proposed here: filter an array in C#.

@Sayse Yes, but the proposed solution that doesn't use LINQ, is a foreach loop with the comparison inside. I want to know if there's a more elegant and concise way to do it without LINQ. — Cheshire Cat
– Cheshire Cat, Commented Jul 15, 2015 at 7:39
@CheshireCat: You haven't mentioned that you can't use LINQ, why? — Tim Schmelter
– Tim Schmelter, Commented Jul 15, 2015 at 7:41
You should show what you have tried, that was just the first duplicate I found but there are plenty of duplicates around. and most of them use the method you described so I'm not sure what the actual question is here — Sayse
– Sayse, Commented Jul 15, 2015 at 7:41

Tim Schmelter · Accepted Answer · 2015-07-15 07:43:52Z

2

If you can't use LINQ you can still use Array.FindAll:

string[] filteredValues = Array.FindAll(myValues, s => s.Contains(myFilter));

or maybe you want to keep only all strings which first token(separated by dot) is School:

string[] filteredValues = Array.FindAll(myValues, s => s.Split('.')[0] == myFilter);

answered Jul 15, 2015 at 7:43

Tim Schmelter

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Jonathan Camilleri · Accepted Answer · 2015-07-15 07:58:27Z

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One possible answer is to make an IComparer that sorts the array by the matching value (if it contains filter return 1 else return 0) then find the first item outside the filter and make another array with the values up the one before that point.

answered Jul 15, 2015 at 7:58

Jonathan Camilleri

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