C#实现保存文件时重名自动生成新文件的方法

/// <summary>/// Generates a new path for duplicate filenames./// </summary>/// <param name="path">The path.</param>/// <returns></returns>private string GetNewPathForDupes( string path ){  string directory = Path.GetDirectoryName( path );  string filename = Path.GetFileNameWithoutExtension( path );  string extension = Path.GetExtension( path );  int counter = 1;  string newFullPath;  do  {  string newFilename = "{0}({1}).{2}".FormatWith( filename, counter, extension );  newFullPath = Path.Combine( directory, newFilename );  counter++;  } while ( System.IO.File.Exists( newFullPath ) );  return newFullPath;}