CODEWITHSUNDEEP
c#.net
R.B
R.B

Reputation: 53

Case sensitive Order by for 2 first letters

I need a linq/lambda expression that sorts a list of strings but only the first 2 letters. Uppercase letters should be sorted first. 

MyList.Sort((s1, s2) =>
    s1.Substring(0, 2).CompareTo(
    s2.Substring(0, 2)));

This is what i have now. It succesfully sorts the first 2 letters but when its case sensitive it fails...

EDIT: This is the result and works: 

   var sorted = MyList.OrderBy(x =>x[0]).ThenBy(x => x[1]).ToList();

Upvotes: 2

Views: 1471

Answers (1)

sujith karivelil
sujith karivelil

Reputation: 29016

Why not a simple OrderBy() and .ThenBy as they performs a case sensitive comparison for sorting, consider the following code:

List<string> unOrderedList = new List<string>() { "bAC", "ABC", "aBc", "abc", "cAb", "Abx", "bbc", "bBx", "cAA" };
var orderedList = unOrderedList.OrderBy(x => x[0]).ThenBy(y=>y[1]).ToList();

Here in this case the orderedList will have the output as:

ABC
Abx
aBc
abc
bAC
bBx
bbc
cAb
cAA

See the example here, You can see that Abx have a higher position in the List than aBc, You can see a similar case in bBx and bbc.

Upvotes: 7

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