foreach (FileInfo NextFile in fileInfo) //遍历文件 System.IO.File.ReadAllText(FilePath);

////////////////////////////////////////////////////////////////////
 DirectoryInfo theFolder = new DirectoryInfo(strDirectoryPath);//@"F:\a\"
 if (theFolder.Exists)
 {
  FileInfo[] fileInfo = theFolder.GetFiles();       
  foreach (FileInfo NextFile in fileInfo)  //遍历文件
  {
   Console.WriteLine(NextFile.Name);
   strIniFileContent = System.IO.File.ReadAllText(NextFile.Name);

  }
 }

private static void ReadFile(string FilePath)
{
 strFileContent = System.IO.File.ReadAllText(FilePath);
}
//////////////////////////////////////////////////////////////