C# Best way to get folder depth for a given path?

Question

I\'m working on something that requires traversing through the file system and for any given path, I need to know how \'deep\' I am in the folder structure. Here\'s what I\'m cu

Answer 1

Maybe someone need also some performance testing...

        double linqCountTime = 0;
        double stringSplitTime = 0;
        double stringSplitRemEmptyTime = 0;
        int linqCountFind = 0;
        int stringSplitFind = 0;
        int stringSplitRemEmptyFind = 0;

        string pth = @"D:\dir 1\complicated dir 2\more complicated dir 3\much more complicated dir 4\only dir\another complicated dir\dummy\dummy.dummy.45682\";

        //Heat Up
        DateTime dt = DateTime.Now;
        for (int i = 0; i < 10000; i++)
        {
            linqCountFind = pth.Count(c => c == '\\');
        }
         _= DateTime.Now.Subtract(dt).TotalMilliseconds;
        dt = DateTime.Now;
        for (int i = 0; i < 10000; i++)
        {
            stringSplitFind = pth.Split('\\').Length;
        }
        _ = DateTime.Now.Subtract(dt).TotalMilliseconds;
        dt = DateTime.Now;
        for (int i = 0; i < 10000; i++)
        {
            stringSplitRemEmptyFind = pth.Split(new char[] { '\\' }, StringSplitOptions.RemoveEmptyEntries).Length;
        }
        _ = DateTime.Now.Subtract(dt).TotalMilliseconds;
        dt = DateTime.Now;

        //Testing
        dt = DateTime.Now;
        for (int i = 0; i < 1000000; i++)
        {
            linqCountFind = pth.Count(c => c == '\\');
        }
        linqCountTime = DateTime.Now.Subtract(dt).TotalMilliseconds; //linq.Count: 1390 ms

        dt = DateTime.Now;
        for (int i = 0; i < 1000000; i++)
        {
            stringSplitFind = pth.Split('\\').Length-1;
        }
        stringSplitTime = DateTime.Now.Subtract(dt).TotalMilliseconds; //string.Split: 715 ms

        dt = DateTime.Now;
        for (int i = 0; i < 1000000; i++)
        {
            stringSplitRemEmptyFind = pth.Split(new char[] { '\\' }, StringSplitOptions.RemoveEmptyEntries).Length;
        }
        stringSplitRemEmptyTime = DateTime.Now.Subtract(dt).TotalMilliseconds; // string.Split with RemoveEmptyEntries option: 720 ms

        string linqCount = "linqCount - Find: "+ linqCountFind + "; Time: "+ linqCountTime.ToString("F0") +" ms"+ Environment.NewLine;
        string stringSplit = "stringSplit - Find: " + stringSplitFind + "; Time: " + stringSplitTime.ToString("F0") + " ms" + Environment.NewLine;
        string stringSplitRemEmpty = "stringSplitRemEmpty - Find: " + stringSplitRemEmptyFind + "; Time: " + stringSplitRemEmptyTime.ToString("F0") + " ms" + Environment.NewLine;

        MessageBox.Show(linqCount + stringSplit + stringSplitRemEmpty);

        // Results:
        // linqCount - Find: 9;  Time: 1390 ms
        // stringSplit - Find: 9;  Time: 715 ms
        // stringSplitRemEmpty - Find: 9;  Time: 720 ms

• So, for most cases, the best is string.split() (see results in code comments).
• string.Split(new char[] { '\\' }, StringSplitOptions.RemoveEmptyEntries) is safer for path.
• And for more complicated cases see: https://cc.davelozinski.com/c-sharp/fastest-way-count-number-times-character-occurs-string and https://cc.davelozinski.com/c-sharp/c-net-fastest-way-count-substring-occurrences-string