Sorting [numbers] listview didn’t work correctly c# [closed]

Just change your string compare method

// Treat as a string.
result = string_x.CompareTo(string_y);

to this one

result = CompareNumericStrings(string_x, string_y);

And Compare implementation. It is not ideal but it does AlphaNumericSorting.

public int CompareNumericStrings(object x, object y)
{
    string s1 = x as string;
    if (s1 == null)
    {
        return 0;
    }
    string s2 = y as string;
    if (s2 == null)
    {
        return 0;
    }

    int len1 = s1.Length;
    int len2 = s2.Length;
    int marker1 = 0;
    int marker2 = 0;

    // Walk through two the strings with two markers.
    while (marker1 < len1 && marker2 < len2)
    {
        char ch1 = s1[marker1];
        char ch2 = s2[marker2];

        // Some buffers we can build up characters in for each chunk.
        char[] space1 = new char[len1];
        int loc1 = 0;
        char[] space2 = new char[len2];
        int loc2 = 0;

        // Walk through all following characters that are digits or
        // characters in BOTH strings starting at the appropriate marker.
        // Collect char arrays.
        do
        {
            space1[loc1++] = ch1;
            marker1++;

            if (marker1 < len1)
            {
                ch1 = s1[marker1];
            }
            else
            {
                break;
            }
        } while (char.IsDigit(ch1) == char.IsDigit(space1[0]));

        do
        {
            space2[loc2++] = ch2;
            marker2++;

            if (marker2 < len2)
            {
                ch2 = s2[marker2];
            }
            else
            {
                break;
            }
        } while (char.IsDigit(ch2) == char.IsDigit(space2[0]));

        // If we have collected numbers, compare them numerically.
        // Otherwise, if we have strings, compare them alphabetically.
        string str1 = new string(space1);
        string str2 = new string(space2);

        int result;

        if (char.IsDigit(space1[0]) && char.IsDigit(space2[0]))
        {
            int thisNumericChunk = int.Parse(str1);
            int thatNumericChunk = int.Parse(str2);
            result = thisNumericChunk.CompareTo(thatNumericChunk);
        }
        else
        {
            result = str1.CompareTo(str2);
        }

        if (result != 0)
        {
            return result;
        }
    }
    return len1 - len2;
}