搜索目录里所有文件(包括子目录）

搜索目录里所有文件(包括子目录）

资料来源：http://www.cnblogs.com/jjwwww/archive/2004/09/04/39559.aspx

用到两个函数ParseDirectory 和CreatePathList

void ParseDirectory(string path, string filter)
                {    
                    string[] dirs = Directory.GetDirectories(path);//得到子目录
                    IEnumerator iter = dirs.GetEnumerator();
                    while(iter.MoveNext())
                    {
                        string str = (string)(iter.Current);
                        ParseDirectory(str, filter);
                    }
                    string[] files = Directory.GetFiles(path, filter);
                    if(files.Length > 0)
                    {
                        m_numFiles += files.Length;
                        m_pathList.Add(files);
                    }
}

string[] CreatePathList()
                {
                    if(m_numFiles <= 0)
                    {
                        return null;
                    }

                    string[] str = new string[m_numFiles];
                    int index = 0;

                    try
                    {
                        IEnumerator pathIter = m_pathList.GetEnumerator();
                        while(pathIter.MoveNext())
                        {
                            string[] ar = (string[])(pathIter.Current);
                            IEnumerator fileIter = ar.GetEnumerator();
                            while(fileIter.MoveNext())
                            {
                                str[index] = (string)(fileIter.Current);
                                ++index;
                            }
                        }
                    }
                    catch(Exception e)
                    {
                        return null;
                    }

                    return str;
                }

# 非递归实现re: 搜索目录里所有文件(包括子目录）

void ParseDirectory(string path, string filter)
{
Queue q=new Queue();
q.Enqueue(path);
while(q.Count > 0) {
string path=(string)q.Dequeue();
string[] files = Directory.GetFiles(path,filter);
if(files.Length > 0) {
m_numFiles += files.Length;
m_pathList.Add(files);
}

string[] dirs = Directory.GetDirectories(path);
foreach(string dir in dirs){
q.Enqueue(dir);
}
}
}

使用范例：如果要查找的：d目录下所有mp3文件

string path="d:\\";    //目录名 也可以用相当路径
string filter="*.mp3";        //文件类型
 int m_numFiles=0;        //文件总数
 ArrayList m_pathList = new ArrayList();//包含所有文件路径的数组
string[] files;            //所有文件名
                
ParseDirectory(path, "*.mp3");
files=CreatePathList();        //生成文件名数组
                if(files == null)
                {
                    throw new Exception(String.Concat("No file found in ", path));
                }