How to order list of string based on StatrtWith using LINQ

Question

I have a list of strings shows below. I want to sort the name based on the Start with value. I try some cases but fails. Example List has data like,

name: "Bible Reading", name: "Scripture Reading", name: "Ready Set", name: "Career Readings", name: "Reading-Berks"

I pass the queryValue as "read" but I can not be ordering based on the values.

IOrderedEnumerable<string> name = result.Select(x => x.name) .OrderBy(i => i.StartsWith(queryValue));

The expected output,

name: "Ready Set", name: "Reading-Berks" name: "Bible Reading", name: "Scripture Reading", name: "Career Readings",

What did you try? How are you ordering right now?

diiN__________
– diiN__________

2016-06-27 06:57:46 +00:00
Commented Jun 27, 2016 at 6:57 — diiN__________
– diiN__________, Commented Jun 27, 2016 at 6:57

fubo · Accepted Answer · 2016-06-27 07:14:25Z

I think this is a issue about case sensitivity.

replace

.OrderBy(i => i.StartsWith(queryValue));

with

.OrderByDescending(i => i.StartsWith(queryValue, StringComparison.InvariantCultureIgnoreCase));

because "Ready Set".StartsWith("read") will return false

Thanks. Its working now, FYI use "OrderByDescending: instead of orderby

sujith karivelil · Accepted Answer · 2016-06-27 07:11:46Z

You have to use OrderByDescending and case insensitive comparison for the required result, hence your query will be like the following:

IOrderedEnumerable<string> name = result.Select(x => x.name) .OrderByDescending(i =>i.StartsWith(queryValue,StringComparison.InvariantCultureIgnoreCase));

Here is a working example which will distinguish OrderByDescending and OrderBy for this example

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