title: C# Cannot Create Directory
body: <p>I can't seem to get the following code to work:</p>
  
  <pre><code>using System;
  using System.Collections.Generic;
  using System.Linq;
  using System.Text;
  using System.IO;
  
  namespace TechKit
  {
     class CsvWriter
     {
        public static void csvLogWrite(string ADName, string LogTimeStamp, string LogEntry, string ATOW, string SSC, string Specialty)
        {
           string dirPath = Path.GetDirectoryName(Properties.Settings.Default.TechKitSDFLocation);
           dirPath = Path.Combine(dirPath, "Logs", DateTime.Now.Year.ToString());
  
           try
           {
              // Determine whether the directory exists. 
              if (Directory.Exists(dirPath))
              {
                 Console.WriteLine("Log Path Exisits - Using It");
                 return;
              }
  
              // Try to create the directory.
              DirectoryInfo di = Directory.CreateDirectory(dirPath);
              Console.WriteLine("The Log directory was created successfully at {0}.", Directory.GetCreationTime(dirPath));
  
           }
  
           catch (Exception e)
           {
              Console.WriteLine("The directory creation process failed: {0}", e.ToString());
           }
  
           finally { }
  
           string newFileName = DateTime.Now.Month.ToString() + ".csv";
           string combinedPath = Path.Combine(dirPath, newFileName);
           string logDetails = LogTimeStamp + "," + Specialty + "," + ADName + "," + LogEntry + Environment.NewLine;
  
           if (!File.Exists(combinedPath))
           {
              string logHeader = "Timestamp,Specialty,Name,Log Entry" + Environment.NewLine;
              File.WriteAllText(newFileName, logHeader);
           }
  
           File.AppendAllText(combinedPath, logDetails);
           Console.WriteLine("Data Written To CSV FIle:");
           Console.WriteLine(logDetails);
           Console.WriteLine("****************************");
        }
     }
  }
  </code></pre>
  
  <p>The code fires an exception when it tries to write the non-existant directory. I get: </p>
  
  <pre><code>'A first chance exception of type 'System.NotSupportedException' occurred in mscorlib.dll'
  </code></pre>
  
  <p>in the console also.   I'm a relative newbie, so I am at a loss.  I can write a file just fine, just not create a directory.</p>
  
  <p>Thanks...</p>