文件读写

从绝对路径提取文件名

string fullPath="D:\xxx123.bmp";
Path.GetFileName(strFilePath);

获取文件列表

DirectoryInfo theFolder = new DirectoryInfo(dir);

FileInfo[] fileInfo = theFolder.GetFiles();

foreach (FileInfo NextFile in fileInfo)
{
    if (NextFile.Name != "")
    {
    }
}

获取文件夹列表

string[] subFolder = Directory.GetDirectories(path);

删除非空文件夹

Directory.Delete(path, true);

读取二进制文件数据

FileStream fs = new FileStream(pmtMetFile, FileMode.Open);
BinaryReader br = new BinaryReader(fs, Encoding.Default);

a= br.ReadByte();

b= br.ReadUInt16();

c= br.ReadInt32();

br.Close();
fs.Close();

写二进制

FileStream fs = new FileStream(@"D: mpxql.dat", FileMode.Create);
BinaryWriter bw = new BinaryWriter(fs);
bw.Write(bytesDecompress);
bw.Close();
fs.Close();

读txt文本

StreamReader sr;
sr= File.OpenText(filePathName);
string line = sr.ReadLine();
sr.Close();

写txt文本

StreamWriter sw;
sw = File.CreateText(filePathName);
sw.WriteLine("xql");
sw.Close();