Question

I met a Difficulty to sort a list item string containing numbers.
I wish I could automatically sort from smallest to largest.
Here is my code:

// Initialize an array to store the numbers
List<string> tab_num = new List<string>();
tab_num.Add("A.3.2.1");
tab_num.Add("A.3.3.1");
tab_num.Add("A.1.0.1");
tab_num.OrderByDescending(num => num).ToList();

Why my result is false ?…

[1] A.3.2.1

[2] A.3.3.1

[3] A.1.0.1

Expected Result:

[1] A.1.0.1

[2] A.3.2.1

[3] A.3.3.1

Thanks a lot

Answer 1

OrderByDescending means from bigger to lower.
Also you are not assigning your result after sorting.

try this:

        List<string> tab_num = new List<string>();
        tab_num.Add("A.3.2.1");
        tab_num.Add("A.3.3.1");
        tab_num.Add("A.1.0.1");
        tab_num = tab_num.OrderBy(num => num).ToList();