List all Files Matching Search Pattern in Directory and Subdirectories

This blog defines how to list all files matching search pattern in directory and subdirectories.

 /// <summary>

        /// Lists all matching search pattern filenames and filesize in directory
        ///
</summary>

        /// <param name="rootDirPath">root directory path like C:\test\
</param>

        /// <param name="searchPattern">file search pattern like *.js for searching all javascript files
</param>

        private static void ListAllFilesInDirectoryAndSubdirectories(string rootDirPath, string searchPattern)

        {
           var dir = new DirectoryInfo(rootDirPath);

            if (!dir.Exists)

            {

                Console.WriteLine("Directory doesn't exists: " + dir.ToString());

                return;

            }
 

            DirectoryInfo sourceDir = new DirectoryInfo(rootDirPath);

            FileInfo[] files = sourceDir.GetFiles(searchPattern);  //Get only files which you need to work with.
            foreach (var myFile in files)

            {

               
try

                {

                    Console.WriteLine("Filename:" + myFile.FullName);

                    Console.WriteLine("Filesize:" + myFile.Length);

                }

                catch (Exception ex)

                {

                    Console.WriteLine(ex.Message);

                }

            }
            DirectoryInfo[] subDirectories = sourceDir.GetDirectories();   
//Get subdirectories

            foreach (var subDirectory in subDirectories)

            {

                ListAllFilesInDirectoryAndSubdirectories(subDirectory.FullName, searchPattern);

            }

        }
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