C# 获取文件夹下的所有文件夹及其文件

//获得当前文件夹下所有文件夹
string path = "D://文件夹";
string[] dirstr = Directory.GetDirectories(path); //获得当前文件夹下的文件
string[] filestr = Directory.GetFiles(path);
int count = ;
for (int i = ; i < filestr.Length; i++)
{
string paths = filestr[i];
StreamReader sr = new StreamReader(paths, Encoding.Default);
String line;
while ((line = sr.ReadLine()) != null)
{
//Console.WriteLine(line.ToString());
bll.Insert(line);
count++;
}
}