C# 保存文件如有重名在原名后加（*）

C#保存文件如有重名加（） **(1)

      //Myadd 处理重名
        private string GetNewPathForDupes(string path)
        {
            string directory = Path.GetDirectoryName(path);
            string filename = Path.GetFileNameWithoutExtension(path);
            string extension = Path.GetExtension(path);
            int counter = ;
            string newFullPath;
            do
            {
                //string newFilename = "{0}({1}).{2}".FormatWith(filename, counter, extension);
                string newFilename = string.Format("{0}({1}){2}", filename, counter, extension);
                newFullPath = Path.Combine(directory, newFilename);
                counter++;
            } while (System.IO.File.Exists(newFullPath));
            return newFullPath;
        }

      private string GetNewPathForDupes(string path)
        {
           string newFullPath = path.Trim();
            //if (System.IO.File.Exists(path))
            //    MessageBox.Show("存在");
            //else
            //    MessageBox.Show("不存在");
            if (System.IO.File.Exists(path))
            {
                string directory = Path.GetDirectoryName(path);
                string filename = Path.GetFileNameWithoutExtension(path);
                string extension = Path.GetExtension(path);
                int counter = ;
                do
                {
                    //string newFilename = "{0}({1}).{2}".FormatWith(filename, counter, extension);
                    string newFilename = string.Format("{0}({1}){2}", filename, counter, extension);
                    newFullPath = Path.Combine(directory, newFilename);
                    counter++;
                } while (System.IO.File.Exists(newFullPath));
            }
            return newFullPath;
        }