C# how can I sort a list of file by index using linq

Question

Hello I need to sort all the files I have in a folder but I got stuck because I need to sort them by index. I'll give you an example:

My files are formatted like this: dateHoursMinutes_index_nameOfFile.dat

Previous I used Array.Sort(_myFiles); to sort them all but now I need to sort them by index, in order.

How can I use linq to do that?

Thank you

Answer 1

Please refer to the following sample code:

string[] _myFiles = new string[4]
{
    "dateHoursMinutes_4_nameOfFile",
    "dateHoursMinutes_1_nameOfFile",
    "dateHoursMinutes_3_nameOfFile",
    "dateHoursMinutes_2_nameOfFile"
};

char[] sep = new char[1] { '_' };
string[] sorted = _myFiles
    .OrderBy(x => Convert.ToInt32(x.Split(sep)[1]))
    .ToArray();