read directory c# code example

Example 1: read folder c#

string mydocpath=Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);     
      StringBuilder sb = new StringBuilder();
      foreach (string txtName in Directory.GetFiles(@"D:\Links","*.txt"))
      {
        using (StreamReader sr = new StreamReader(txtName))
        {
          sb.AppendLine(txtName.ToString());
          sb.AppendLine("= = = = = =");
          sb.Append(sr.ReadToEnd());
          sb.AppendLine();
          sb.AppendLine();   
        }
      }
      using (StreamWriter outfile=new StreamWriter(mydocpath + @"\AllTxtFiles.txt"))
      {    
        outfile.Write(sb.ToString());
      }

Example 2: c# read file current directory

var path = Path.Combine(Directory.GetCurrentDirectory(), "\\fileName.txt");

Example 3: C# get all files in directory

//path is the path of the directory to get files from
//searchPattern is to get specific files. If you want only exe files you enter *.exe

private static IEnumerable<string> GetAllFiles(string path, string searchPattern)
        {
            return Directory.EnumerateFiles(path, searchPattern).Union(
            Directory.EnumerateDirectories(path).SelectMany(d =>
            {
                try
                {
                    return GetAllFiles(d, searchPattern);
                } catch(Exception e)
                {
                    return Enumerable.Empty<string>();
                }
            }));
        }